Bibliografías temáticas / Abrasive material

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Literatura académica sobre el tema "Abrasive material"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 30 de mayo de 2022

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Artículos de revistas sobre el tema "Abrasive material"

1

Farkas, Tamás Péter, Attila Orbán, Sándor Szász, András Rapai, Erik Garamvölgyi y Zoltán Sütő. "Examination of the Usage of a New Beak-Abrasive Material in Different Laying Hen Genotypes (Preliminary Results)". Agriculture 11, n.º 10 (29 de septiembre de 2021): 947. http://dx.doi.org/10.3390/agriculture11100947.

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The aim of the experiment was to investigate the use and effect of a new beak-abrasive material not yet examined on mortality of non-beak trimmed laying hens of different genotypes housed in an alternative pen. The study was performed on 636 females belonging to three genotypes of Bábolna TETRA Ltd. (a1 = commercial brown layer hybrid (C); a2 = purebred male line offspring group (maternal); a3 = purebfigure ed female line offspring group (paternal)). A total of 318 hens, i.e., 106 hens/genotype distributed in six pens (53 hens/pen), were evaluated. Cylindrical beak-abrasive blocks of 5.3–5.6 kg were suspended (0.1–0.4 mm diameter gravel, limestone grit, lime hydrate, and cement mixture) in six alternative pens. In six control pens without abrasive material, 318 hens, i.e., 106 hens/genotype (2 pens control group/genotype, i.e., C1 = commercial brown layer hybrid, C2 = purebred male line offspring group, C3 = purebred female line offspring group; 53 hens/pen;) were placed where there were no beak-abrasive materials. The rate of change in the weight of the beak-abrasive materials and the mortality rate were recorded daily. In the six pens equipped with beak-abrasive materials, infrared cameras were installed, and 24 h recordings were made. The number of individuals pecking the beak-abrasive material, the time and duration of dealing with the material were recorded. Data coming from one observation day are given. During the 13 experimental weeks of observation, the weight loss of beak-abrasives differed significantly in the different genotypes (a1 = 27.4%; a2 = 29.6%; a3 = 56.6%). During the only day analyzed, the hens from all the genotypes mostly stayed between 17:00 and 21:00 h in the littered scratching area where the beak-abrasive material was placed (a1 = 48.4%; a2 = 49.2%; a3 = 54.4%). In the case of each genotype, the rate of the hens dealing with beak-abrasives in the first two periods of the day was relatively low (0.2%–0.7%). Peaks of the activity were between 17:00 and 21:00 (a1 = 0.8%; a2 = 1.3%; a3 = 1.8%). The a3 dealt with the beak-abrasive materials to a significantly greater extent in the period from 13:00 to 17:00 (0.8%) and from 17:00 to 21:00 (1.8%) than the a1 (0.2% and 0.8%, respectively). Due to the use of the beak-abrasive materials, the mortality rate decreased the most in the genotypes that used them (a1 with beak-abrasive material 0.0% vs. C1 9.4%; a2 with beak-abrasive material 2.9% vs. C2 12.4%; a3 with beak-abrasive material) 15.4% vs. C3 5.7%). It can be concluded that the insertion of beak-abrasive materials increased the behavioral repertoire of hens, which is particularly beneficial from an animal welfare point of view. Further and longer-term research is needed to determine whether the insertion of the beak-abrasive material has a beneficial effect on the mortality data of the experimental groups through enrichment, either through physical abrasion of the beak or both.
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2

Hashish, M. "Observations of Wear of Abrasive-Waterjet Nozzle Materials". Journal of Tribology 116, n.º 3 (1 de julio de 1994): 439–44. http://dx.doi.org/10.1115/1.2928861.

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This paper addresses the wear characteristics of the mixing tube of an abrasive-waterjet nozzle. An effective nozzle material should possess high values of both hardness and toughness. The mixing tube, which is where the abrasives are mixed, accelerated, and focused with the high-pressure waterjet, is the component in the abrasive-water jet nozzle that receives the greatest wear. Accelerated wear tests were conducted on relatively soft (steel) mixing tubes using a typical soft abrasive (garnet sand) and on harder (tungsten carbide) tubes using a harder abrasive material (aluminum oxide). A wide range of candidate tool materials, including several carbides and ceramics, was also tested using actual machining parameters. The tungsten carbide grades exhibited greater longevity than the harder ceramics, such as boron carbide, when garnet abrasives were used. The reverse trend was observed with aluminum oxide abrasives. Wear trends suggest that the wear mechanisms along the mixing tube change from erosion by particle impact at the upstream sections to abrasion at the downstream sections. Linear cutting tests were also conducted on several candidate nozzle materials to gain more information related to wear performance. It was found, for example, that the binder in tungsten carbide, which controls these properties, is a critical factor that also controls the lifetime of tungsten carbide mixing tubes.
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Park, Jin-Hyung, Hao Cui, Sok-Ho Yi, Jea-Gun Park y Ungyu Paik. "Effect of abrasive material properties on polishing rate selectivity of nitrogen-doped Ge2Sb2Te5to SiO2film in chemical mechanical polishing". Journal of Materials Research 23, n.º 12 (diciembre de 2008): 3323–29. http://dx.doi.org/10.1557/jmr.2008.0397.

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We investigated the polishing rate and selectivity of nitrogen-doped Ge2Sb2Te5(NGST) to SiO2film for different abrasive materials (colloidal silica, fumed silica, and ceria abrasives). They both were strongly dependant on abrasive material properties. The polishing rate of nitrogen-doped NGST decreased in the order ceria, fumed silica, and colloidal silica abrasives, which was determined by abrasive material properties, such as abrasive hardness, crystal structure, and primary and secondary abrasive sizes. In addition, the polishing rate slope of NGST film was not significantly different for different abrasive materials, indicating that the polishing of NGST film is mechanical dominant polishing. In contrast, the polishing rate slope of SiO2film decreased in the order ceria, fumed silica, and colloidal silica abrasives, indicating that the polishing of SiO2film is chemical dominant polishing. Furthermore, the difference in polishing rate slopes between NGST and SiO2film gave a polishing rate selectivity of NGST to SiO2film higher than 100:1 with colloidal silica abrasive.
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Che, Cui Lian, Chuan Zhen Huang, Jun Wang, Hong Tao Zhu y Quan Lai Li. "Theoretical Model of Surface Roughness for Polishing Super Hard Materials with Abrasive Waterjet". Key Engineering Materials 375-376 (marzo de 2008): 465–69. http://dx.doi.org/10.4028/www.scientific.net/kem.375-376.465.

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In this paper, the impact pressure of abrasives acting on the polished materials was deduced by Field Theory and the model of surface roughness for polishing super hard materials with Abrasive Water Jet (AWJ) was established. The model indicates that the surface roughness increases linearly with an increase in the maximum depth of abrasives indenting into materials and that the relationship between the surface roughness and polishing parameters including water pressure, abrasive pressure, the impact angle, the hardness of the polished material, the elastic distortion of abrasive, abrasive size, abrasive density, nozzle diameter and standoff.
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Cha, Oh y Cho. "Waterjet Erosion Model for Rock-Like Material Considering Properties of Abrasive and Target Materials". Applied Sciences 9, n.º 20 (10 de octubre de 2019): 4234. http://dx.doi.org/10.3390/app9204234.

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In this study, we investigated the characteristics of abrasive erosion considering the material properties of abrasives and targets. An abrasive particle erosion model considering energy transfer due to hardness differences was developed based on energy conservation using the correlation between volume removal and effective kinetic energy. To obtain the effective erosion kinetic energy of an abrasive, an acceleration model was derived for the abrasive particles, including terms describing the properties of the abrasive and fluid. The applicability of the suggested model was verified by comparing the brittle erosion results obtained using a previous theoretical approach to those of the present numerical analysis. The results obtained using the developed model exhibited good qualitative agreement with the brittle material erosion results. By evaluating acceleration and the erosion characteristics of an abrasive, the erosion performance could be predicted and optimized.
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Shen, Mingxue, Bo Li, Zhinan Zhang, Longzhi Zhao y Guangyao Xiong. "Abrasive wear behavior of PTFE for seal applications under abrasive-atmosphere sliding condition". Friction 8, n.º 4 (2 de octubre de 2019): 755–67. http://dx.doi.org/10.1007/s40544-019-0301-7.

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Abstract Abrasive wear is a common failure phenomenon that often limits the service life of sealing elements. Evaluation and comparison of the abrasion resistance of polytetrafluoroethylene (PTFE) were conducted using Al2O3 particles with sizes in the range 5 to 200 µm on a pin-on-flat tribo-tester under dry reciprocating sliding conditions at room temperature. Based on the examined worn surface characteristics of both PTFE and 316L stainless steel (as a counterpart) and the analyzed coefficient of friction (COF) evolutions, the wear mechanism and particle size effect have been explored in detail. The results demonstrate that the abrasive size is the main contributing factor, which can drastically impact the wear mechanism and tribological properties of tribo-pairs. The COF exhibits different evolution characteristics (trends) for different abrasive sizes. For moderate particle sizes, the COF trends become more complicated and the most evident wear of the metallic counterpart is evident. The activity behaviors of abrasives are dominated by the particle size. Particles can becomes embedded in one of the tribo-pair materials to plough-cut the counterpart, thus causing two-body abrasive wear. The abrasives can also behave as free rolling bodies, which play the role of third body to realize three-body “PTFE-abrasive-316L” abrasion. When abrasives are involved in the wear process, both the wear rate and COF of the metallic counterpart increase, but the material removal rate of the PTFE is reduced. The results obtained can offer guidelines regarding the design and protection of seals.
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Komanduri, R., N. Umehara y M. Raghunandan. "On the Possibility of Chemo-Mechanical Action in Magnetic Float Polishing of Silicon Nitride". Journal of Tribology 118, n.º 4 (1 de octubre de 1996): 721–27. http://dx.doi.org/10.1115/1.2831600.

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Chromium oxide abrasive has been reported in the literature to provide efficient chemo-mechanical polishing action for silicon nitride ceramic. Since aluminum oxide and chromium oxide abrasives are nearly of the same hardness, magnetic float polishing tests were conducted on silicon nitride balls with these two abrasives to investigate mechanical versus chemo-mechanical aspects of polishing. Tests results show higher removal rates and smoother surface texture (with fewer pits) with chromium oxide abrasive compared to aluminum oxide abrasive. Formation of pits due to brittle fracture seems to be the more predominant mode of material removal with aluminum oxide abrasive than with chromium oxide abrasive. While there may be some mechanical action (abrasion) with chromium oxide abrasive initially, subsequent removal is believed to be due to chemo-mechanical action. This could be due to degeneration of the chromium oxide abrasive (both mechanical and chemical) during polishing. Various hypotheses for the material removal mechanism (both mechanical and chemo-mechanical) were considered. Based on that, the higher removal rates and smoother surface texture on the silicon nitride balls with chromium oxide abrasive in semifinish polishing is interpreted here as possibly due to chemo-mechanical action. Higher chemical stability of aluminum oxide abrasive (compared to chromium oxide abrasive) and the known role of chromium oxide as a catalyst for the oxidation of silicon nitride are some of the reasons attributed for this action.
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Li, Yan, Hang Gao y Ren Ke Kang. "Study on Removal and Embedding Mechanism of CdZnTe Using Loose Abrasive". Advanced Materials Research 24-25 (septiembre de 2007): 201–10. http://dx.doi.org/10.4028/www.scientific.net/amr.24-25.201.

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Cd1−xZnxTe (CZT) is an excellent ternary compound semiconductor. CZT is the most suitable substrate material for Hg1−yCdyTe epitaxial growth and can make the detector itself. The researchers have done a lot of works on the hard and brittle material removal mechanism in lapping process. however, no published articles are available regarding the removal mechanism and the abrasives embedding mechanism of the soft and brittle material in lapping progress .and there is its own characteristic if the hard abrasives machining the soft and brittle material in lapping progress, the objective of this paper is to build the physical model ,and divide the abrasive into four kinds of abrasives , they are two-body abrasive ,three-body abrasive ,embedded abrasive and small abrasive, and the authors analyze the effects on the material surface of the above abrasives. At last, design series of experiments, through analyzing the results and observe the surface morphology, the authors prove that the physical model is correct.
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Wu, Hai Long, Yun Huang, Zhi Huang y G. J. Cheng. "Experimental Research on the Abrasive Belt Grinding Turbine Blades Material 1Cr13 Stainless Steel". Key Engineering Materials 487 (julio de 2011): 452–56. http://dx.doi.org/10.4028/www.scientific.net/kem.487.452.

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Blades are the key parts of the turbine, which usually use materials such as 1Cr13 stainless steel. These materials are of high strength, great toughness, and good thermo hardening, but the process is difficult. Abrasive belt grinding has good grinding performance. Grinding tests of three kinds of abrasive belts were carried out on 1Cr13 stainless steel; the relationship between the material removal rate and the species, such as abrasive belt type, belt speed, the normal grinding force, and grinding fluid, was studied; after the belt grinding, the microscopic morphology of the surface was analyzed by SEM, and it revealed that the differences of the micro structure and basic wear law of different abrasives. The results show that in the process of abrasive belt grinding, the ceramic abrasive belt has the highest material removal rate. The material removal rate of alumina and zirconium corundum abrasive belt reached the maximum when Vs is about 25m/s or so, and ceramic abrasive belt is stable to maintain high material removal rate when Vs is at the speed range of 28 to 32m/s. The material removal rate can be improved several times when using grinding fluid of butter.
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Badisch, Ewald, Markus Varga y Stefan J. Eder. "A Brief Review of Abrasive Wear Modelling Using a Numerical-Experimental Approach". Key Engineering Materials 799 (abril de 2019): 83–88. http://dx.doi.org/10.4028/www.scientific.net/kem.799.83.

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Abrasive wear limits the lifetime of key components and wear parts used in various applications. Damage is caused by indentation of harder particles into the wearing materials and subsequent relative motion resulting in ploughing, cutting, and fracture phenomena. The wear mechanisms depend mainly on the applied materials, loading conditions, and abrasives present in the tribosystem, hence material choice is often a difficult task and requires careful evaluation. For this, a variety of laboratory abrasion tests are available of which the scratch test is discussed in this work as the most fundamental abrasive interaction. For further insight into the acting wear mechanisms and microstructural effects, large-scale molecular dynamics simulations were carried out as well as meso-/macroscopic scratch simulations with the mesh-free Material Point Method. The prediction of abrasive wear is of high relevance for industrial applications. Up to now, no general one-to-one match between field application and lab system is known. Here, a simulation-based transfer of experimentally determined wear rates via a lab-2-field approach enables the prediction of wear rates in real applications.
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Tesis sobre el tema "Abrasive material"

1

Wang, Aiguo. "Abrasive wear of metal matrix composites". Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305516.

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Mouritz, Adrian Paul. "The abrasive wear of rock drill bit materials". Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315846.

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Kurd, Michael Omar 1982. "The material and energy flow through the abrasive waterjet machining and recycling processes". Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32766.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.
Includes bibliographical references (p. 109-111).
The purpose of this thesis was to investigate the material and energy flow through the abrasive waterjet machine and the WARD recycling machine. The goal was to track all of the material, water, abrasive, energy, air, and tooling through the different components of the machining and recycling processes. The material removal was found to be a function of length and part geometry, while all of the other variables were simply a function of time. The cutting speed determines the abrasive use, water use, and power use, and is varied based on the material, geometry, thickness and cut quality. The cutting speed was found to be linear with machineability--a measure of the material, almost linear with hardness--inversely related to thickness, somewhat inversely related to quality, and linear with power. Water was found to be the most abundant consumable, following by abrasive, together making up over 99% of the output waste. In the recycling process, roughly 60% of abrasive can be recycled after a single use, with the only significant consumable being power, used to dry the moist abrasive. Replacement tooling on both the abrasive waterjet and the WARD recycling unit were found to be negligible compared to the large amount of abrasive sludge produced every minute.
by Michael Omar Kurd.
S.B.
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4

Abbatelli, Daniele. "Material flows in the waterjet industry : an environmental perspective". Thesis, Linköpings universitet, Industriell miljöteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111003.

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Abrasive Waterjet cutting (AWJ) presents many advantages over competing machining techniques, but several issues are related to the high volume of materials (and in particular of abrasive) used in the process. In this study, the environmental impact of the material flows in the abrasive waterjet industry has been analyzed adopting a life cycle perspective in order to individuate which phases place the largest burden on the environment. Moreover, three alternative abrasives (crushed rock, recycled glass and synthetic abrasive) and three disposal practices (in-site recycling, off-site recycling and recycling as construction material) have been also evaluated to estimate the benefits that can be achieved if these could be used in place of garnet abrasives and landfilling. The transportation of the abrasive resulted to be the phase that has the largest influence in every case and thus should be reduced as much as possible. For what concerns the alternative options, the usage of recycled glass and the in-site recycling of the abrasive were the two alternatives with the best environmental performances. However, crushed rock could be the best option for what concerns the global warming potential if carbon sequestration due to carbonation of silicate rocks is taken into account. Off-site recycling and recycling as construction material are good options only if the transportation to the recycling site can be reduced. Synthetic abrasive are instead found to have a much larger impact compared to every other alternative examined.
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Kordowska, Marta. "Analysis of material displacement in the micro- and nanocutting zone with diamond abrasive grain : doctoral dissertation". Rozprawa doktorska, [s.n.], 2021. http://dlibra.tu.koszalin.pl/Content/1424.

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Lauand, Valena Hennies. "Gravação de materiais de engenharia com jato d\'água abrasivo". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-11082010-163033/.

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O presente trabalho descreve a utilização do jato d\'água abrasivo como ferramenta de gravação em ladrilhos de Mármore Branco de Cachoeiro de Itapemirim e em placas de vidro plano comum. São apresentadas as variações de desempenho do processo de gravação, assim como as várias geometrias de ranhuras obtidas com a variação de diversos parâmetros do equipamento. Os resultados da gravação em diversas amostras foram digitalizadas e fotografadas. Além disso apresenta o resultado da gravação, em mármore e vidro de um desenho de geometria complexa. Finalmente discussões e conclusões a respeito dos resultados obtidos são apresentadas.
The current thesis describes the use of abrasive water jet as an etching tool in Branco de Cachoeiro de Itapemirim Marble plate and in float glass plate. Etching process performance variations are introduced as well as different kerf geometries obtained with variation of many processes parameters. The results of the etching in several samples have been photographed and scanned. Furthermore the results of the etching of a complex drawing in marble and glass is shown. Finally conclusions and discussions over the achieved results are described.
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Bianchi, Eduardo Carlos. "Estudo do comportamento de discos abrasivos, em operações do tipo "Cut-off" por mergulho basculante, submetidos à diversas condições de corte sem lubrificação /". Bauru : [s.n.], 1997. http://hdl.handle.net/11449/116081.

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Resumo: O corte de aços por disco abrasivo é um dos processos que apresentam as melhores características de economia, eficiência e rapidez, e ainda hoje é muito utilizado no meio industrial se comparado a outros processos tradicionais de corte como o cisalhamento (tesourão), torneamento (sangramento), serragem com serras metálicas, serragem por atrito com lâminas circulares sem dentes e chama oxi-acetileno. Da literatura formal mais recente, nota-se que durante os últimos anos as máquinas para a realização dos cortes foram inovadas. Entretanto, esta atenção não foi dada à ferramenta de corte abrasiva. A falta de literatura técnica dificulta a escolha das condições de corte e da sua otimização no meio industrial. Este fato é agravado pela grande diversidade de discos abrasivos disponíveis no mercado, com diferentes qualidades e preço. As decisões sobre as condições de corte são baseadas em experiências pessoais, sem critério definido, e freqüentemente desprezam os aspectos de segurança inerentes ao processo. A concorrência estrangeira, através da globalização da economia, está obrigando as indústrias nacionais a atenderem os padrões internacionais de qualidade e desempenho. Uma forma das indústrias nacionais tornarem-se mais competitivas é através do conhecimento detalhado das operações de corte com discos abrasivos. Neste trabalho é apresentado um estudo sobre o comportamento de discos abrasivos, submetidos a diversas condições de corte. Os resultados são discutidos em função da análise da velocidade de corte, velocidade de mergulho do disco abrasivo na peça, força tangencial de corte média, tempo de corte e relação G.
Abstract: The cut-off operation shows the best savings, efficiency and quickness caracteristics and nowadays it is very used in the industrial environments if compared to other traditional cutting operations like shearing, turning, sawing with metalic hacksaws, friction sawing with non-tooth circular blades and oxi-acetylene torch cutting. In the most recent bibliography, it is noted that the new cutting machines have been improved. However, this fact did not happen in the abrasive cut-off tools. The lack of technical bibliography led the cutting conditions and optimizations choices to be a hard action. Such difficulties are worsen because there are many kinds of abrasive cutting wheels available with different qualities and prices. So, these choices are based on personal experiences, without parameters, and frequently despise the security aspects of the operations. The foreign competition, through the economy globalization, is forcing the national industry to attend the international quality and performance standards. One way for the national industries become more competitives (improving the productivity and decreasing the production costs) it is by the detailed knowledgment of the cut-off operations with abrasive wheels. This work shows a research about the abrasive wheels behavior, under several cutting conditions. The results are discussed in function of the cutting speed, downfeed of the abrasive wheel, average of tangencial cutting force, time per cut and G parameter analysis.
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Jankovský, Július. "Náhrada křemičitého plniva v opravných maltách umělým hutným materiálem". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216562.

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Master‘s thesis “Substitution of silica filler in the repair mortars by artifical compact material“ could by generally divided into two parts theoretical and experimental. The theoretical part is mainly focused on summarizing knowledge about repair mortars. The repair mortars are used for reprofilation of disrupted concrete layers, and therefore some of the most common defects of these layers, from which we can determine requirements for repair mortars are listed in the thesis. In the theoretical part, there is also mentioned a general formula of how to prepare a repair mortar, also there are described manufacture and characteristics of the most important ingredients of mortars such as cement, filler (aggregate), water and chemical modificators. Above all the theoretical part is focused on the effects that individual ingredients have on the resulting properties of repair mortars. The experimental part could be further divided into two parts. In the first part there are listed properties of the individual investigated materials and also there is introduced theoretical basis for particular tests of properties of repair mortars, such as analysis of grading distribution of a filler (aggragate), tests of flexular and compression strengths and frost resistance. In the first part there are also proposed formulae of mortar mixtures, where part of the original filler was substituted by an abrasive material TRYMAT, artificial compact aggregate made from blast furnace slag UHK d/D, or their combination. The properties of these mortar mixtures were compared to referential mortar mixture PANBEX R1. In the second part of experimental section is dedicated to summarization and discussion of the obtained results for individual mortar mixtures.
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Brym, Radek. "Trendy vývoje obrábění vodním paprskem". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228165.

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In diploma thesis there is elaborated the analysis of assumed development of water jet technology and there is analyzed the level of water jet method in production. There are introduced the possibilities of new applications of water jet machining and the possibilities of it’s future development. There is think over the enlargement of this method in next 5 years. Simultaneously there is solved the question of techno economic operation severity of this technology.
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Mareš, Pavel. "Souvislost vad řezu s řeznými parametry při řezání abrazivním vodním paprskem". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230789.

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The aim of this thesis is to determine the area where there is no random step change in cutting edge roughness. This area is established on the basic of samples created by the abrasive water jet cutting method with variation of technologic parameters.
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Libros sobre el tema "Abrasive material"

1

Jun, Wang. Abrasive waterjet machining of engineering materials. Uetikon-Zuerich, Switzerland: Trans Tech Publications, Ltd., 2003.

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Banerjee, Subrata. Abrasive products: Materials, applications, and markets. Norwalk, CT: Business Communications Co., 2001.

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3

Jagadish y Kapil Gupta. Abrasive Water Jet Machining of Engineering Materials. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36001-6.

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Kleinedlerová, Ivana y Peter Kleinedler. Piercing of Materials with Abrasive Water Jet. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92130-9.

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Toenshoff, Hans Kurt. Basics of Cutting and Abrasive Processes. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Brauer, Samuel. The friction product and materials market. Norwalk, CT: Business Communications Co., 1998.

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7

China) Conference on Application of Diamond and Related Materials in China (4th 2010 Xiamen Shi. Application of diamond and related materials: Selected, peer reviewed papers from the 4th Conference on Application of Diamond and Related Materials in China (CADRM2010) and the 1st International Symposium on Advances in Brazed Superabrasive Tools (ISABS2010), August 19-23, 2010, Xiamen, China. Durnten-Zurich: Trans Tech Publications, 2011.

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Shui ji mo shi yu kang mo shi shui ji cai liao. Beijing Shi: Zhongguo shui li shui dian chu ban she, 2008.

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Independent variables for optical surfacing systems: Synthesis, characterization and application. Heidelberg: Springer, 2014.

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Miyoshi, Kazuhisa. Abrasion and deformed layer formation of manganese-zinc ferrite in sliding contact with lapping tapes. [Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1986.

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Capítulos de libros sobre el tema "Abrasive material"

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Salonitis, Konstantinos, Apostolos Fysikopoulos y George Chryssolouris. "Abrasive Material". En CIRP Encyclopedia of Production Engineering, 1–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-642-35950-7_6416-4.

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Salonitis, Konstantinos, Apostolos Fysikopoulos y George Chryssolouris. "Abrasive Material". En CIRP Encyclopedia of Production Engineering, 1–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-20617-7_6416.

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Salonitis, Konstantinos, Apostolos Fysikopoulos y George Chryssolouris. "Abrasive Material". En CIRP Encyclopedia of Production Engineering, 4–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-53120-4_6416.

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Chao, Choung Lii, Wen Chen Chou, Chung Woei Chao y Chao Chang A. Chen. "Material Removal Mechanisms Involved in Rotary Ultrasonic Machining of Brittle Materials". En Advances in Abrasive Technology IX, 391–96. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-416-2.391.

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Kang, Gui Wen y Fei Hu Zhang. "Research on Material Removal of Magnetorheological Finishing". En Advances in Abrasive Technology IX, 285–90. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-416-2.285.

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Momber, Andreas W. y Radovan Kovacevic. "Material-Removal Mechanisms in Abrasive Water-Jet Machining". En Principles of Abrasive Water Jet Machining, 89–162. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1572-4_5.

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Aoki, Shigeru, Seiji Hirai y Tadashi Nishimura. "Prevention from Delamination of Composite Material during Drilling Using Ultrasonic Vibration". En Advances in Abrasive Technology VIII, 465–70. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-974-1.465.

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Fu, Hua, Bo Liao, Bao Chen Sun, Ai Ping Liu, Fang Juan Qi y Zhan Lai Ding. "Abrasion Performances of Stainless Steel/Carbon Fiber Reinforced Polyetheretherketone (PEEK) Friction Material". En Advances in Abrasive Technology IX, 511–18. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-416-2.511.

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Guo, Dong Ming, C. B. Zhang, Ren Ke Kang y Y. W. Sun. "Inverse Method for Determining Grinding Area and Material Removal Amount in Grinding Radome". En Advances in Abrasive Technology IX, 81–86. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-416-2.81.

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Foldyna, Josef y Petr Martinec. "Abrasive Material in the Process of AWJ Cutting". En Jet Cutting Technology, 135–47. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2678-6_9.

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Actas de conferencias sobre el tema "Abrasive material"

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Badisch, E., P. Geiderer, R. Polak y F. Franek. "Design of Abrasion Resistant Surfaces by Textures on Macroscopic Size". En World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63884.

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Although abrasive wear is a predominant type of wear in almost all fields of industry, it is particularly relevant to the field of mining and mineral processing. This wear mechanism is mainly influenced by the abrasive particle (e.g. hardness, size, shape, mass), the wear kinematics (impact angle, impact velocity), and also by the worn material itself (e.g. surface, structure, hardness). Today, a lot of work is done to develop systems which are resistant against wear caused by mineral abrasives. One goal for higher abrasion resistance is the use of macroscopic surface textures which hinder the abrasive particles from hitting unprotected surface areas (especially for dry, coarse abrasives) or force the formation of surface adherent mineral embedment which leads to a self-protection effect (especially for fine, wet type of abrasives). However, there is a serious lack of systematic and scientific knowledge for the design of abrasion resistant surfaces. The aim of this study was to evaluate the efficiency of macroscopic surface textures on their ability of minimizing abrasive attack, finally with the purpose to establish design rules for abrasion resistant surfaces. Profile geometry, profile distribution and surface arrangements were investigated on the wear protecting properties. It could be observed that the surface protection factor against abrasion can be adjusted by distribution and surface coverage. A strong influence of the grain size of the abrasives used on the wear behavior was observed.
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Bhagavat, Milind y Imin Kao. "Computational Model for Free Abrasive Machining of Brittle Silicon Using a Wiresaw". En ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0913.

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Abstract The present paper deals with physics based computational modeling of the wiresaw Free Abrasive Machining (FAM). The wiresaw is used to slice large diameter wafers of predominantly brittle semi-conductors such as silicon. The wiresawing model proposed in the present paper involves cutting action by ‘floating’ abrasives. It is proposed that the abrasive carrying slurry forms a film in the cutting zone by an elasto-hydrodynamic action. Finite Element Analysis shows this film to be in general thicker than the average abrasive size. This signifies a ‘float’ machining condition, wherein there is no direct pressing of abrasives by the wire. Typical rolling and indenting of abrasives under such free body abrasion environment is supported by hydrodynamic shear and pressure respectively. The abrasive is assumed to remove material by typical indentation fracture. Finite element analysis of stresses underneath an indenting abrasive shows that cracks leading to chipping occur only during unloading of indented abrasives (during rolling). The volume of the chip removed in a single indentation is proportional to the volume of plastic zone underneath the indenter. We integrate the elasto-hydrodynamic model and the single abrasive indentation model into a complete representative model of wiresawing.
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Slătineanua, Laurenţiu, Margareta Coteaţă, Nicolae Pop, Irina Beşliu y Vasile Braha. "Superficial Abrasive Jet Machining". En THE 14TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2011. AIP, 2011. http://dx.doi.org/10.1063/1.3589701.

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Ding, Z., R. Knight y R. W. Smith. "Abrasive Wear Characteristics of Ni-base Self-fluxing Alloy Spraywelding Overlays". En ITSC 1997, editado por C. C. Berndt. ASM International, 1997. http://dx.doi.org/10.31399/asm.cp.itsc1997p0091.

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Abstract The results of low stress, pin-on-disc and high stress grinding abrasive wear tests on coatings produced by plasma and oxy-acetylene flame spraywelding are presented. FNil5A and FNiWC35 Ni-based self-fluxing alloys were selected as typical spraywelding materials for abrasive wear resistance. The abrasive wear resistance mechanisms of welded overlays produced by various materials and processes were also characterized by hardness tests, microstructural and compositional analyses, and through analysis of the effect of different kinds of abrasive on the wear resistant of Ni-base self-fluxing spraywelding overlays. Results showed that FNiWC35 overlays exhibited improved resistance under low stress abrasion, but the relative wear resistances of FNiWC35 and FNil5A still depended primarily on the type and hardness of the abrasive medium used. For the same material, the abrasive wear resistance of oxyacetylene flame sprayed overlays was higher than that produced by plasma spraywelding. The wear resistance of the plasma spraywelding overlays depended not only on the material, but also strongly on the spraywelding process parameters.
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Åklint, Thorbjörn, Per Johander, Klas Brinkfeldt, Christian Öjmertz y Tony Ryd. "Abrasive Waterjet Cutting for Micro Manufacturing". En 7th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing Services, 2010. http://dx.doi.org/10.3850/978-981-08-6555-9_173.

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Chung, Chunhui, Glenn Melendez y Imin Kao. "Experimental Study of Lapping Using Mixed Abrasive Grits". En ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84210.

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Wafers made of materials such as silicon, III-V and II-VI compounds, and optoelectronic materials, require high-degree of surface quality in order to increase the yield in micro-electronics fabrication to produce IC chips and devices. Measures of properties of surface quality of wafers include: nanotopography, surface morphology, global planarization, total thickness variation (TTV) and warp. Due to the reduction of feature size in micro-electronics fabrication, the requirements of such properties become more and more stringent. To meet such requirements, the wafer manufacturing processes of brittle semiconductor materials, such as slicing, lapping, grinding, and polishing have been continually improved. In this paper, the lapping process of wafer surface treatment is studied with experimental results of surface roughness and material removal rate. In order to improve the performance of lapping process, effects of mixed abrasive grits in the slurry of the free abrasive machining (FAM) processes are studied using a single-sided wafer-lapping machine. Under the same slurry density, experiments employing different mixing ratios of large and small abrasive grits, and various normal loadings on the wafer surface applied through a jig are conducted for parameter study. With various mixing ratios and loadings, observations and measurements such as the total amount of material removed, material removal rate, surface roughness, and relative angular velocity are presented and discussed in this paper. The experiments show that the half-half mixing ratio of abrasives removes more material than other mixing ratios under the same conditions, but with a higher surface roughness. The results of this study can provide a good reference to the FAM processes that practitioners use today by exploiting different mixing ratios and loadings of abrasive slurry in the manufacturing processes.
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Bhagavat, Milind, Fuqian Yang y Imin Kao. "Elasto-Plastic Finite Element Analysis of Indentations in Free Abrasive Machining". En ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-1097.

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Abstract Free abrasive machining (FAM) using a wiresaw is emerging as a state of the art technology for slicing large diameter semiconductor wafers. Material removal in a FAM environment is known to be by rolling and indenting of abrasives into the cut media. Therefore, indentation by abrasives in the slurry is the single most important mechanism in wiresawing process. This paper deals with the importance of abrasive shape in material removal during FAM. To achieve this objective, indentation by conical rigid abrasives of different included angles has been investigated using finite element method (FEM). Typical indentation fracture involving median, radial and transverse cracking has been explained to the maximum level of sophistication attainable using static stress analysis. Some industrially relevant results pertaining to FAM in general and wire-sawing in particular have been proposed.
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Braehler, Georg, Philipp Welbers, Mike Kelly, Gianfranco Brunetti y D. van Regenmortel. "Abrasive Blasting Unit (ABU)". En ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16270.

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NUKEM Technologies was contracted to supply a dry, automated drum belt (tumbling) Abrasive Blasting Unit (ABU) to the Joint Research Centre of the European Commission in Ispra, Italy. The ABU was installed in the centralised radioactive waste management area of the JRC-Ispra site in Italy. The unit is to be employed for the decontamination to clearance levels of slightly contaminated metal components and, where practical, concrete or heavy concrete (density ∼3200 kg/m3) blocks arising from the dismantling of nuclear facilities. The presentation is based on the successful construction and installation of the ABU at the JRC Ispra site. Among the several possibilities of adapting conventional abrasive units to nuclear applications, an automatic tumbling machine was preferred, due to the larger output and (mainly) for the ease of operation, with minimum direct handling of contaminated material by operators, thus satisfying the ALARA principle. Consideration was also given to Belgoprocess’ successful experience with a predecessor, similar unit. After adequate size reduction batches of up to about 800 kg of material to be decontaminated are automatically introduced into the blasting chamber. Pieces between 100 mm and 800 mm long, between 100 mm and 500 mm wide and between 5 mm and 300 mm high can be effectively treated in the unit, the maximum weight of a single piece being limited to 100 kg. Short lengths of pipe may be included; the final dimensions of pipe to be decontaminated will be established during the nuclear commissioning tests. Other components with hard-to-reach surfaces may also be included. The content of the chamber is tumbled by two bladed drums, while sharp steel grit is sprayed onto the contaminated components, thus removing the surface layer including any contamination. From experience, 30 minutes of treatment is sufficient to remove contamination to levels below expected clearance levels for most materials. The decontaminated components are removed from the blasting chamber automatically and collected in skips. Dust and grit are led to a series of separators; the grit gets recycled to the blasting chamber, cleaned off contaminants such as paint are fed to collection bins, and the dust is bagged into waste drums. Airflow through the whole system cleans the decontaminated components, transports the dust to the collecting area, and acts as a dynamic barrier to limit risks of contamination of the surrounding areas. Prior to release back into the room, the air is filtered in a series of automatically cleaned filters, followed by HEPA filters. The whole facility is operated in an automatic mode: the operators are only required to place drums or pallets of contaminated material onto the feeder, and remove skips of decontaminated material and drums of secondary waste such as dust. The presentation will describe the system and potential applications in the nuclear industry in detail.
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Duong, Nick H., J. Ma y Shuting Lei. "FEM Investigation of the Effects of Impact Speed and Angle of Impacts of Abrasive in the Vibration Assisted Nano Impact Machining by Loose Abrasives". En ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-3043.

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In this paper, the commercial FEM software package Abaqus is employed to model the novel nanomachining process, Vibration Assisted Nano Impact machining by Loose Abrasives (VANILA), which combines the principles of vibration-assisted abrasive machining and tip-based nanomachining to conduct nano abrasive machining of hard and brittle materials. In this novel nanomachining process, an atomic force microscope (AFM) is used as a platform and the nano abrasives injected in slurry between the workpiece and the vibrating AFM probe impact the workpiece and result in nanoscale material removal. Diamond particles are used as the loose abrasives. The effects of impact speed, angle of impacts, and the frictional coefficient between the workpiece and abrasives are investigated using Abaqus. It is found that the impact speed, impact angle, and frictional coefficient between the silicon workpiece and nanoabrasives have big influence on the nanocavity’s size and depth.
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Chitan, Matheus de Mendonça y Katia Cristiane Gandolpho Candioto. "Influence of the Porous Volume in the Structure of Resin Bond Composite Abrasives by its Mechanical Performance". En ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8292.

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Abstract Abrasive tools consist of abrasive grains, binder and pores. Binders are the matrix of the material and may be of the metallic, vitrified or resin type. The wide use of polymeric materials (resinoid) is due to their low cost and excellent mechanical properties. The grain has the function of roughing the material, the binder, on the other hand, has the characteristics of ensuring grain adhesion and the pores in the structure are responsible for cooling the abrasive tool. In this work, we report the preparation and evaluation of the mechanical characteristics of resin bond composite abrasives with different structures based on the porous concentration. The composite abrasives were made with phenolic resin and alumina grains. Four different structures were studied from 10 to 30% of porous volume fraction with 50% of grain volume fraction. The concentration of porous and bond in the structure composition were employed to compare the mechanical performance of the prepared composite abrasive. To evaluate the mechanical properties of composites, Impact strength, Young’s Modulus by impulse excitation and flexural strength were realized. It was observed that as the porosity is higher, the impact resistance (absorbed energy) is lower, which confirms the lower resistance produced by the surface area contact (grain/binder) and a greater accumulation of tension in the binder material, the higher porosity value, higher the flexural strength value until 20% of porosity. Samples with higher volumes level of porosity presented lower Young’s Modulus but the presence of pores produced by volatiles by-products (mainly water) should act as stress concentrators, thus favoring lower mechanical properties at the resin-grain interface.
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Informes sobre el tema "Abrasive material"

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Fenske, George y Oyelayo Ajayi. An Abrasive Wear Model of Knife Milling to Predict the Impact of Material Properties and Milling Parameters on Knife Edge Recession. Office of Scientific and Technical Information (OSTI), agosto de 2021. http://dx.doi.org/10.2172/1818971.

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Ludtka, G. M. ADVANCED ABRASION RESISTANT MATERIALS FOR MINING. Office of Scientific and Technical Information (OSTI), abril de 2004. http://dx.doi.org/10.2172/885603.

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Mackiewicz-Ludtka, G. Advance Abrasion Resistant Materials for Mining. Office of Scientific and Technical Information (OSTI), junio de 2004. http://dx.doi.org/10.2172/940296.

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Abrashkevich, Yury, Hrigoriy Machyshyn, Tetyana Scherbina y Oleksandr Marchenko. Technologies of manufacture of abrasive armed circuits for cutting of stone materials. Gіrnichі, budіvelnі, dorozhnі ta melіorativnі mashini, abril de 2019. http://dx.doi.org/10.31493/gbdmm1892.0303.

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Gittleman, Gregory M. Abrasive Wear of Four Direct Restorative Materials by Standard and Whitening Dentifrices. Fort Belvoir, VA: Defense Technical Information Center, mayo de 2013. http://dx.doi.org/10.21236/ad1012923.

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MALDONADO, KARELYS, JUAN ESPINOZA, DANIELA ASTUDILLO y WILSON BRAVO. Fatigue and fracture resistance and survival of occlusal veneers of composite resin and ceramics blocks in posterior teeth with occlusal wear: A protocol for a systematic review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, octubre de 2021. http://dx.doi.org/10.37766/inplasy2021.10.0036.

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Review question / Objective: The aim of this systematic review is to synthesize the scientific evidence that evaluates fatigue and fracture resistance, survival, and stress distribution, of composite resin CAD/CAM and ceramic CAD/CAM occlusal veneers in posterior teeth with severe occlusal wear. Condition being studied: Currently there is an increase in cases of dental wear, due to several factors such as: excessive consumption of carbonated drinks, a diet high in acids, gastric diseases, anorexia, bulimia, dental grinding, use of highly abrasive toothpastes, or a combination of these(9) (10) (11) (12); which affect the patient in several aspects: loss of vertical dimension, sensitivity due to the exposure of dentin, esthetics, affectation of the neuromuscular system(11) (13) (14). With the advent of minimally invasive dentistry, occlusal veneers have been found to be a valid option to rehabilitate this type of cases and thus avoid greater wear of the dental structure with full coverage restorations. Sometimes when performing a tabletop it is not necessary to perform any preparation, thus preserving the maximum amount of dental tissue(3) (6) (15). Due to the masticatory load either in patients without parafunction where the maximum masticatory force is approximately 424 N for women and 630 N for men or in those who present parafunction where the maximum bite force can vary from 780 to 1120N(7), it is necessary that the occlusal veneers support that load which makes indispensable a compilation of studies investigating both fatigue and fracture resistance and the survival rate of occlusal veneers in different materials and thicknesses.
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Rahimipour, Shai y David Donovan. Renewable, long-term, antimicrobial surface treatments through dopamine-mediated binding of peptidoglycan hydrolases. United States Department of Agriculture, enero de 2012. http://dx.doi.org/10.32747/2012.7597930.bard.

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There is a need for renewable antimicrobial surface treatments that are semi- permanent, can eradicate both biofilms and planktonic pathogens over long periods of time and that do not select for resistant strains. This proposal describes a dopamine binding technology that is inexpensive, bio-friendly, non-toxic, and uses straight-forward commercially available products. The antimicrobial agents are peptidoglycanhydrolase enzymes that are non-toxic and highly refractory to resistance development. The goal of this project is to create a treatment that will be applicable to a wide variety of surfaces and will convey long-lasting antimicrobial activity. Although the immediate goal is to create staphylolytic surfaces, the technology should be applicable to any pathogen and will thus contribute to no less than 3 BARD priorities: 1) increased animal production by protecting animals from invasive and emerging diseases, 2) Antimicrobial food packaging will improve food safety and security and 3) sustainable bio- energy systems will be supported by coating fermentation vats with antimicrobials that could protect ethanolic fermentations from Lactobacillus contamination that reduces ethanol yields. The dopamine-based modification of surfaces is inspired by the strong adhesion of mussel adhesion proteins to virtually all types of surfaces, including metals, polymers, and inorganic materials. Peptidoglycanhydrolases (PGHs) meet the criteria of a surface bound antimicrobial with their site of action being extracellular peptidoglycan (the structural basis of the bacterial cell wall) that when breached causes osmotic lysis. As a proof of principle, we will develop technology using peptidoglycanhydrolase enzymes that target Staphylococcus aureus, a notoriously contagious and antimicrobial-resistant pathogen. We will test for susceptibility of the coating to a variety of environmental stresses including UV light, abrasive cleaning and dessication. In order to avoid resistance development, we intend to use three unique, synergistic, simultaneous staphylococcal enzyme activities. The hydrolases are modular such that we have created fusion proteins with three lytic activities that are highly refractory to resistance development. It is essential to use multiple simultaneous activities to avoid selecting for antimicrobial resistant strains. This strategy is applicable to both Gram positive and negative pathogens. We anticipate that upon completion of this award the technology will be available for commercialization within the time required to achieve a suitable high volume production scheme for the required enzymes (~1-2 years). We expect the modified surface will remain antimicrobial for several days, and when necessary, the protocol for renewal of the surface will be easily applied in a diverse array of environments, from food processing plants to barnyards.
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