Relevant bibliographies by topics / Abrasion Resistance Machine

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Abrasion Resistance Machine'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Abrasion Resistance Machine"

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TARASIUK, Wojciech, Jerzy NAPIÓRKOWSKI, Krzysztof LIGIER, and Bazyli KRUPICZ. "COMPARISON OF THE WEAR RESISTANCE OF HARDOX 500 STEEL AND 20MnCr5." Tribologia 273, no. 3 (June 30, 2017): 165–70. http://dx.doi.org/10.5604/01.3001.0010.6254.

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The paper presents the results of experimental studies on abrasion resistance of Hardox 500 steel and 20MnCr5 steel subjected to thermo-chemical treatment. These types of steel are often used for agricultural or construction machinery. Abrasion tests were performed on a T-11 pin using a disc tester. The test conditions correspond to the wear caused by micro-grinding and grain-cutting using particles from the product as well as a result of abrasion produced by loose abrasive material created through the chipping of silica sand grains. The obtained results can be useful in the selection of materials for machine components.
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Li, Hao Ping, Feng Li, Zhi Fan Fang, and Yong Qing Chen. "Study on Turbine Blade Abrasion Mechanism and Abrasion Resistance Performance Testing Machine." Advanced Materials Research 621 (December 2012): 206–10. http://dx.doi.org/10.4028/www.scientific.net/amr.621.206.

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This paper studied the flow indicators affecting abrasion through turbine component surface, analyzed the indicator data of major rivers, which provided design parameters and design basis of the abrasion test equipment; and studied abrasion test methods of turbine overflow surface, determined the rotating-jet mode abrasion test principle and design parameters of the rotating-jet abrasion testing machine
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Müller, M., and P. Hrabě. "Overlay materials used for increasing lifetime of machine parts working under conditions of intensive abrasion." Research in Agricultural Engineering 59, No. 1 (March 6, 2013): 16–22. http://dx.doi.org/10.17221/64/2011-rae.

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We evaluated a degree of the machine part abrasive wear with secondary focus on their hardness. The paper states laboratory results of overlay systems from their wear resistance point of view. Laboratory experiments were carried out by two-body abrasion on bonded abrasive of a P120 granularity. The results proved an increased abrasive wear resistance of martensitic, ledeburitic and stellitic overlays against eleven different original products. The overlay UTP Ledurit 60 reached the optimum values. The GD-OES (Glow Discharge Optical Emission Spectroscopy) method proved the different chemical composition of the overlay from the stated chemical composition of the overlaying electrode.    
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Ueda, Keiji, Nobuyuki Ishikawa, and Yasuhiro Murota. "Influence of Matrix Structure and Hard Carbide on Abrasive Resistance of Steel Plates." Materials Science Forum 706-709 (January 2012): 2342–47. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.2342.

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The microstructure of abrasion resistant steel plate usually consists of as quenched martensite, because harder matrix structure improves abrasion resistance of a steel plate. However hard martensitic material has lower formability, which is the important material property for fabricating machine parts. In this paper, a new type of abrasion resistant technique for steel plate is introduced. The steel provides good combination of high abrasion resistance and excellent formability without increasing hardness. The key technology to balance abrasion resistance and formability is the microstructural control of the ferritic matrix structure with dispersed extremely hard carbide particles. Basic research of abrasion mechanism revealed that abrasion resistance is strongly affected by the kind of carbides and the dispersed condition.
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Tian, Hao Liang, Shi Cheng Wei, Yong Xiong Chen, Hui Tong, Zhi Bin Zhang, and Bin Shi Xu. "Study on Composition and Mechanical Property of New High Abrasion Resistant Alloy Used in High Arc Spaying." Advanced Materials Research 531 (June 2012): 189–93. http://dx.doi.org/10.4028/www.scientific.net/amr.531.189.

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Spraying wire was widely used in remanufacturing work piece for worn failure. With the demand of high abrasion resistant wire, new type alloy was developed. The solidification structures of the new high abrasion resistant alloy (HARA) containing Mn, Cr, Si, C and the structure was studied after tension by scanning electron microscopy (SEM). The phase evolution was analyzed by X-ray diffraction and Rockwell hardness evaluated on the hardness testing. The abrasion behavior of HARA alloy used in the liner of wet-grinding machine in metallurgical industry is investigated under impacted energy of 0.5-3 J in acid-ironstone slurry; the test was carried out by a modified MLD-10 tester. The result show that the solidification structures of HARA alloy consist of austenitic Fe and the hardness neared to HRC60. Under the high energy, the wear resistance of HARA alloy is three times more than Mn13. Therefore, the new material has better abrasive wear resistance and lower environmental impact
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Czaplicki, Zdzisław, Adam Rylski, Wioleta Serweta, and Stanisław Strzelecki. "Research on Footwear Laces with Respect to Abrasion Resistance and Spontaneous Untying." Fibres and Textiles in Eastern Europe 28, no. 3(141) (June 30, 2020): 23–26. http://dx.doi.org/10.5604/01.3001.0013.9014.

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In this paper, two types of footwear laces research were undertaken. The first was connected with abrasion resistance and the second with the displacement force at the knot. The abrasion resistance was registered by the level of abrasion for standard eyelet. The displacement force was measured with the use of a tensile test machine, where the force and extension were registered. As a criterion of test evaluation, the maximum force was established when the knot was untied. The research was conducted for a set of different types of shoelaces (differing in shape, structure and raw materials). The evaluation criteria proposed can be used in order to determine the raw materials and optimal construction of shoelaces. From the user’s point of view, the measures identified i. e. the displacement force in the knot (Fpw) and abrasion resistance (Ks) are the most important factors.
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Matseevich, Andrey, Tatyana Matseevich, and Andrey Askadskii. "Study of the abrasion resistance of wood-polymer composites and mixtures of ABS-plastic with polyvinyl chloride." MATEC Web of Conferences 196 (2018): 04069. http://dx.doi.org/10.1051/matecconf/201819604069.

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The abrasion of materials based on blends of ABS plastic with polyvinyl chloride (PVC) as well as terraced boards based on wood-polymer composites (DPC) has been studied. The measurements were carried out on a drum-type machine, and on a Taber's abrasimeter. For blends of ABS plastic with PVC at abrasion path length 600 m wear is 0.85%. For terracotta boards based on WPC, the wear during the test (loss of mass) was 0.0042 g. The abrasion of the sample was 9.29×10-5 g/cm2. Thus, the obtained blends should be recommended for application for floor coverings, since they possess negligible abrasion.
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Xie, Jing Pei, Ai Qin Wang, Wen Yan Wang, Ji Wen Li, and Luo Li Li. "Erosion Wear Behaviors of Low Chromium Cast Iron Containing Nickel." Advanced Materials Research 233-235 (May 2011): 2984–87. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2984.

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The erosion wear experiments of low-chromium cast iron containing nickel were done by MCF-30 Erosion Abrasion Experimental Machine. The structure and surface morphology after erosive wear were analyzed by SEM and XRD. The results indicated that the distribution of carbide was reticular after tempering at 250and oil quenching at 960. The maximal erosion wear rate was appeared at 60 °erosion angle, high acid corrosion media have great influence on the abrasion resistance of experimental material and corrosion effects almost had no influence on the abrasion resistance of experimental material in the weak acid environment of pH≥3. The erosive wear mechanism of the experimental material was studied.
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Krauledaitė, Julija, Kristina Ancutienė, Virginijus Urbelis, Sigitas Krauledas, and Virginija Sacevičienė. "Development and evaluation of 3D knitted fabrics to protect against mechanical risk." Journal of Industrial Textiles 49, no. 3 (June 17, 2018): 383–401. http://dx.doi.org/10.1177/1528083718783316.

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In this research, eight different 3D weft-knitted fabrics were developed and evaluated. 3D fabrics have been knitted on circular weft-knitting machines with two different gauges: 20E gauge and 28E gauge. Three different raw materials were used for the fabric’s production: high molecular mass polyethylene (HPPE) yarn and 0.05 mm diameter steel wire in the outer layers (for the front and reverse) and polyamide yarn in the binding layer. The experiments were conducted on the developed 3D knitted fabrics to determine the fabric’s resistance to mechanical risks such as circular blade cut, puncture, abrasion, and also to evaluate the comfort parameter, such as air permeability. It was defined that 3D weft-knitted fabrics best results on tests: circular blade cut, puncture and abrasion resistant were achieved using HPPE yarn twisted with steel wire, higher mass per unit area with more significant amount of steel wire. According to the standard EN 388:2003, three samples of developed 3D weft-knitted fabrics had the highest 5th blade cut and the highest (4th) abrasion resistance level. All of them had the highest (4th) level of puncture resistance. 3D fabrics knitted on a circular weft-knitting machine of gauge 28E ensured 1.3–2.1 times greater blade cut and 4.9–12.1 times greater abrasion resistance result, than fabrics knitted on gauge 20E, due to a higher stitch density, higher mass per unit area, density and fabric’s thickness. But on the other hand, these parameters lowered air permeability by 20.2–43.0%.
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Cheng, Zhi Fang, Hong Sheng Ding, Hui Rong, and Li Geng Zhao. "Abrasion Resistance of Alumina-Titanium Dioxid Coating at High Temperature." Applied Mechanics and Materials 302 (February 2013): 115–18. http://dx.doi.org/10.4028/www.scientific.net/amm.302.115.

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Nano-structured and micron Al2O3-13%TiO2 coatings were deposited by air plasma spraying.Wear properties of the coatings under different temperature trough SRV friction and wear testing machine were studied, the results shows that the friction coefficient of nano and micron Al2O3-13%TiO2 coatings both have rising trend.with the temperature increases.The wear volume of micron coating is 1.8-2 times that of the nano coating..The nanometer Al2O3-13%TiO2 coating slide with ZrO2 is still compact and has no large crack after abrasion.
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Dissertations / Theses on the topic "Abrasion Resistance Machine"

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OLIVEIRA, Marcelo dos Anjos. "Desgaste abrasivo do aço Hadfield com diferentes teores de carbono em abrasômetro do tipo pino-disco." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18671.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-04-27T15:18:52Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Marcelo Oliveira.pdf: 7846435 bytes, checksum: 4659cf7d50095ccabdf49ebcc00f0bba (MD5)
Made available in DSpace on 2017-04-27T15:18:52Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Marcelo Oliveira.pdf: 7846435 bytes, checksum: 4659cf7d50095ccabdf49ebcc00f0bba (MD5) Previous issue date: 2016-08-31
A presente pesquisa teve como objetivo, investigar o efeito do teor de carbono e do tamanho do abrasivo na resistência ao desgaste e no fenômeno de encruamento superficial de quatro aços Hadfield. Para esse estudo, foi montado, o equipamento pino contra disco, e, como abrasivo utilizou-se lixas de ferro, com o tamanho médio entre 36 µm e 93 µm. Para o alcance do objetivo proposto foram delimitados materiais e métodos, a saber: (a) montagem do abrasômetro pino-disco a partir de um dispositivo desativado disponibilizado pelo LFS-USP; (b) confrontar resultados experimentais – dois materiais (Aço 1045 e alumínio 6351) foram submetidos a ensaios realizados na UFPE e USP para fins de estudos comparativos; (c) avaliação da influência de parâmetros do ensaio – três abrasivos com diferentes tamanhos de partículas e diferentes cargas foram submetidos e avaliados mediante o desgaste abrasivo; (d) avaliação do comportamento de diferentes composições do aço Hadfield perante ensaios de abrasividade – aços contendo quatro diferentes teores de carbono foram submetidos a ensaios com lixas #220 e #320; (e) análise das superfícies desgastadas – após os ensaios dos materiais, as superfícies foram realizadas análises por microscópio eletrônico de varredura (MEV) das superfícies desgastadas. Os resultados obtidos com o equipamento na metodologia empregada tiveram uma boa reprodutibilidade. Foram observadas diferenças nos resultados entre os equipamentos da UFPE e da USP. Quanto a este tópico, o desgaste abrasivo do aço Hadfield foi influenciado pelo teor de carbono apresentando uma relação em que maiores teores demonstraram menor efeito de desgaste, diferentes tamanhos de abrasivo ocasionam um efeito de encruamento significativo, onde se observou o ganho de dureza em aços com menores teores de carbono. Contudo, foi apresentada uma oscilação do efeito no abrasivo #320. As micrografias revelaram microssulcos e microcortes provenientes do ensaio e não foram observadas diferenças nas marcas de desgaste quando utilizados tamanhos diferentes de partícula abrasiva. Ao final, chegou-se a conclusão de que os resultados obtidos demonstram que o teor de carbono influência na resistência ao desgaste do aço e consequentemente no encruamento superficial do aço. Observa-se também a influência do tamanho do abrasivo e carga aplicada o ensaio.
This research aimed to investigate the effect of the carbon content and the size of the abrasive in the wear resistance and surface hardening phenomenon four Hadfield steel. For this study , has been assembled , the disc against pin device and abrasive was used iron sandpapers, with average size between 36 m and 93 micrometers. To achieve the proposed objectives were defined materials and methods, namely: (a) mounting the pindisk abrasômetro from a disabled device provided by the LFS-USP; (b) comparing experimental results - two materials (1045 steel and aluminum 6351) were submitted to tests performed at university and USP for purposes of comparative studies; (c) evaluation of the influence of the test parameters - Three abrasive particles with different sizes and different loads were submitted and evaluated by the abrasive wear; (d) assessment of the behavior of different steel compositions Hadfield before abrasiveness tests - steels containing four different carbon contents were subjected to tests with sandpaper # 220 and # 320; (e) analysis of the worn surfaces - after the tests of materials different analyzes were performed by scanning electron microscope (SEM) of worn surfaces. The results obtained with the equipment in the methodology employed had good reproducibility. There were differences in results between the equipment and the UFPE USP. On this topic, the abrasive wear Hadfield steel was influenced by carbon having a relationship in which higher levels showed less wear effect, different abrasive sizes cause a significant strain hardening effect, which was observed gain hardness steel with lower carbon content. However, an oscillation of the abrasive effect on the # 320 was presented. The micrographs revealed microssulcos and microcuts from test and differences were observed in wear marks when using different sizes of abrasive particle. In the end, came to the conclusion that the results show that the influence of carbon content in the wear resistance of steel and consequently the surface of the steel hardening. It is also observed the influence of abrasive size and load applied to the test.
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Books on the topic "Abrasion Resistance Machine"

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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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Blickensderfer, Robert. Laboratory tests of spalling, breaking, and abrasion of wear-resistant alloys used in mining and mineral processing. Avondale, MD: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Book chapters on the topic "Abrasion Resistance Machine"

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Kett, Irving. "RESISTANCE to DEGRADATION of SMALL-SIZE COARSE AGGREGATE by ABRASION and IMPACT in the LOS ANGELES MACHINE." In Asphalt Materials and Mix Design Manual, 17–18. Elsevier, 1998. http://dx.doi.org/10.1016/b978-0-8155-1425-1.50009-4.

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"Resistance to Degradation of Small-Sized Coarse Aggregates by Abrasion and Impact in the Los Angeles Machine (C 131)." In Engineered Concrete, 37–38. CRC Press, 2009. http://dx.doi.org/10.1201/9781420091175-c7.

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Matsumura, M., and B. E. Chen. "Erosion-Resistant Materials." In Abrasive Erosion and Corrosion of Hydraulic Machinery, 235–313. PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., 2003. http://dx.doi.org/10.1142/9781848160026_0005.

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Méausoone, Pierre-Jean, and Alfredo Aguilera. "Inventory of Experimental Works on Cutting Tools’ Life for the Wood Industry." In Research Developments in Wood Engineering and Technology, 320–42. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4554-7.ch009.

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Woodworking is based on a trinomial machine/piece/tool. For maximum quality of the manufactured piece, it is important not to separate this trinomial, but the limited life of tools prevents that permanent contact. This phenomenon is due to the wear of the cutting parts of the tools. The prevention of wear is based on two methods. The first is to anticipate the end point of tool wear, changing these after a fixed period, no matter what. The other school is to recognize the tool wear at the event: the tools are changed once they are really worn out, finding faults on manufactured parts. A worn tool generates pieces with non-compliant quality or even unusable. A deeper understanding of wear and its consequences would change the tool at the right time. The tool wear for wood is due to several phenomena interacting with each other. The first dominating phenomenon is a corrosive attack that decreases the mechanical strength of the surface. The second is an abrasive attack whose work is facilitated by the reduced resistance of the surface. Repeated shocks can be in the degradation of the cutting edge, temperature acting as amplifier to wear. Understanding of the wear patterns can characterize the life of tools by wear measurement to find ways to extend this period with development of tool coatings, while maintaining optimal conditions for woodworking to get the best finish.
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Conference papers on the topic "Abrasion Resistance Machine"

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Li, Haoping, and Feng Li. "Study on abrasion resistance mechanism of concrete and rotating-jet mode concrete abrasion resistance performance testing machine." In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5988837.

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Liu, Hou-lin, Man-hui Cao, Jie Chen, Yong Wang, and Cheng-bin Wang. "Experimental Study on Abrasion and Cavitation Resistance of Non-Metallic Coating Materials for Pump." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5003.

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Abstract The protection of the flow-passage components of pump by using coating is an important method to increase wear resistance. This paper aims at examining abrasion resistance and cavitation erosion resistance of three typical non-metallic coating materials for pump including epoxy resin mortar, composite resin mortar and polyurethane. A wear-resistance test bench was built, using ultrasonic vibrating air eroding machine. Meanwhile, the main relative raw materials and formulas were introduced. The results indicate that: (1) The accumulated volume reduction of abrasion of composite resin mortar changes in an oblique waveform, and its abrasion resistance is better than that of epoxy resin mortar in a short period of time. The wear rate of epoxy resin mortar and composite resin mortar is higher than that of polyurethane. The total wear volume of epoxy resin mortar, composite resin mortar and polyurethane is decreased by 8.74%, 9.89% and 0.58% respectively within 30h of anti-wear test time; (2) The accumulated volume reduction of cavitation erosion of epoxy resin mortar is proportional to the time. In anti-cavitation erosion test time of 26 h, the erosion volume of composite resin mortar, polyurethane and epoxy resin mortar cavitation is reduced by 0.44%, 0.29% and 0.35%, respectively. It shows that cavitation erosion resistance of three coating materials is similar, while polyurethane materials have the best abrasion resistance.
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Shurpali, Amogh Arvind, Emily Van Dam, J. Riley Edwards, David A. Lange, and Christopher P. L. Barkan. "Laboratory Investigation of the Abrasive Wear Mechanism of Concrete Crosstie Rail Seat Deterioration (RSD)." In 2012 Joint Rail Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/jrc2012-74107.

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Currently, there are divergent design and performance demands on railway infrastructure components due to increasing freight axle loads and cumulative gross tonnages, as well as increased investment in high-speed passenger rail development in North America. The divergence in loading and performance demands on shared infrastructure arises from the fact that while high-speed passenger trains exert lower loads at relatively high speeds, freight trains exert high loads at relatively low speeds. Improvements in infrastructure component designs are needed to achieve increased durability and tighter geometric tolerances. According to a rail industry survey administered by University of Illinois at Urbana-Champaign (UIUC) in 2008, Rail Seat Deterioration (RSD) is the principal performance problem limiting the service life of concrete crossties in North America. Rail infrastructure researchers and industry experts agree that abrasive wear may occur due to relative motion between the rail pad and concrete crosstie rail seat, potentially resulting in RSD. The complex tribological process of abrasion is further complicated and expected to be accelerated by the presence of abrasive fines and moisture, creating 3-body wear condition. Lack of understanding of the abrasion mechanism has resulted in a sub-optimal and iterative design of ties, causing reduced service life. This paper summarizes our efforts in understanding the effect of changing the mix design of concrete on the abrasion resistance of the rail seat which will eventually help us in modeling abrasive wear in RSD by constructing a mathematical relationship between the rail seat wear rate and input parameters including concrete mix design, mechanical/tribological properties of materials involved, normal load applied, presence of moisture, and abrasive fines. To simulate abrasive wear in RSD, a simple experiment is being carried out using a rotating wheel (lapping machine) capable of abrading concrete samples as a part of UIUC’s Small-Scale Abrasion Resistance Test (SSART). The objective of this research is to develop wear performance curves (e.g. wear depth versus load/time/cycles) for lab specimens developed from concrete crosstie mix designs that are currently being used in the industry, as well as for the evaluation of new mix designs. These data will help the rail industry in mechanistically designing concrete crossties by improving the understanding of materials used for concrete crosstie mix designs, with the objective of decreasing life cycle costs for the crosstie and fastening system. Preliminary SSART results are in agreement with relevant literature documenting the relationships between concrete mix designs and curing conditions and the resulting rate of abrasion.
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Jeon, Hyun Bae, Tae Hoon Song, Sung Ho Park, Sun Chul Huh, and Won Jo Park. "Fatigue Crack Growth Behavior of High Carbon Steel (SM53C) by Using Induction Hardening." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72452.

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Recently, with the high performance and efficiency of machine, there have been required the multi-functions in various machine parts, such as the heat resistance, the abrasion resistance and the stress resistance as well as the strength. Fatigue crack growth tests were carried out to investigate the fatigue characteristics of high carbon steel (SM53C) experienced by high-frequency induction treatment. The influence of high-frequency induction treatment on fatigue limit was experimentally examined with the special focus on the variation of surface microstructure and the fatigue crack initiation and propagation through fractography. Also, the shape of hardening depth, hardened structure, hardness, and fatigue-fracture characteristics of SM53C composed by carbon steel are also investigated.
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Chee, S. B., Ammar Al Shalabi, C. W. Chin, and B. F. Yousif. "On the Effect of Roller Materials on the Power Window Mechanism From a Tribological Perspective." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66112.

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This study serves to delineate the effects of material on the lifespan of a polymeric roller rubbing against a steel wire. Four materials, namely nylon, polyester, borosilicate glass and epoxy are the manipulated variables in conducting a simulation with a steel wire. A block-on-ring machine was used to conduct the tribo-experiments under dry contact condition. In concurrence with average operating conditions, the machine was set to 0.15 m/s sliding velocity, at an applied load of 10 N. Worn surfaces of the polymer were subsequently studied under optical microscopy. Frictional and wear resistance results were presented versus time for a predetermined duration. There is a strong correlation between the wear resistance and material hardness but the contrary is found with elongation at break. Findings revealed better wear resistance in epoxy due to its higher hardness. The improvement attained with reference to nylon was approximately 68%. The optical images of worn surfaces which sustained scratches and grooves implied that the contact mechanism was that of abrasion.
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Mohammadi, Parsa, and Z. Jane Wang. "Machine learning for quality prediction in abrasion-resistant material manufacturing process." In 2016 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE). IEEE, 2016. http://dx.doi.org/10.1109/ccece.2016.7726783.

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Saha, Gobinda C., A. Mateen, and Tahir I. Khan. "Tribological Performance Study of HVOF-Sprayed Microstructured and Nanostructured WC-17wt.%Co Coatings." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40086.

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Abrasive and erosive wear of components and machinery is an ongoing challenge in the oil sands industry in northern Alberta, Canada. To improve the wear resistance by increasing surface hardness of steels, heat treatments and deposition of hard layers of metal alloys (such as stellite) by fusion welding techniques are traditionally used. However, these deposition techniques are not applicable to all shapes and add considerable weight to the final component. Thermal spraying techniques such as the use of high velocity oxy-fuel (HVOF) composite coatings based on WC-Co cermet system offer better wear resistance and greater flexibility in applications. This study presents work on two feedstock powders, namely nanocrystalline and microcrystalline WC-Co cermets, with identical matrix phase content: WC-17wt.%Co. The novelty of the research is that an engineered duplex Co coated WC-17wt.%Co cermet particle designed to withstand coating spalling under elevated loads as well as to limit abrasive debridement during wear is introduced for the first time to produce a more homogeneously-dispersed coating microstructure. The engineered particle has 6wt.% of the ductile phase material mixed into the core to insure that the reinforcement WC phase is discontinuous to limit the debridement during wear, while remainder (11wt.%) of the Co is applied as a coating on the particle to improve the ductility. The mechanical properties of the overall particle are further improved by controlling the size of the reinforcing phase (WC) in the matrix (Co). This resulted in a WC-17wt.%Co particle containing a characteristic WC grain in the order of 350 nm in the core with the Co outer coating of 1–2 μm thick, making the powder particle as nanocrystalline. HVOF deposited coatings of the nanocrystalline and microcrystalline powders were examined for microhardness, fracture toughness, sliding abrasion (ASTM G133-05) and dry-sand rubber wheel abrasion (ASTM G65-04) wear performance. The wear rate under various loads and sliding distances was studied. In both the coatings, it was found that the wear rate increased with increasing applied loads, while it decreased with increasing sliding distances. 3D surface analysis of the wear tracks using atomic force microscopy (AFM) revealed two distinctive mechanisms associated with the two coatings after abrasive wear. The improved wear resistance was attributed to the higher hardness value of the nanostructured WC-17wt.%Co coating. It was also found that the nanostructured WC-17wt.%Co coating has about twice the toughness of the conventional microstructured coating counterpart. The extent of the WC decarburization and the dissolution of Co in the coatings were also studied.
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Ramesh, C. S., and T. B. Prasad. "Abrasive Wear Behaviour of Al-Si-Graphite Composite Under Heat-Treated Condition." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44414.

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Composites were prepared from commercially available scrap piston by dispersing copper coated graphite particulates by stir casting, followed by heat treatment of the composite. Abrasive wear tests were conducted on the composites and the matrix alloy both before and after heat treatment. The test duration was 30min while coarse silicon carbide abrasive wheels were used. Wear was measured as weight loss of the specimen using digital weighing machine of accuracy 0.001gms. The worn surfaces were subjected to SEM analysis. Addition of graphite particulates followed by heat treatment has resulted in uniform distribution of graphite in the matrix alloy and improved abrasive wear resistance of the cast Al-Si-graphite composites.
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9

Klinskaya, N., V. Jilyaev, and A. Pankratov. "Physico-Chemical Aspects of Plasma Spray Coatings." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p0747.

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Abstract The results of an investigation into compound, structure and some properties of composite plasma coatings based on stellite with an addition of titanium nitride are presented. It is shown that the coating formed in a gas-air plasma is characterized by better wear resistance and resistance to scaling. The results of industrial test lend support to wide use of such coatings in machine parts and units that work under the simultaneous influence of impact, abrasive wear and high temperature.
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10

Tesfay, Hayelom D., Yuzhu Xie, Zhigang Xu, Bing Yan, and Z. C. Li. "An Experimental Study on Edge Chipping in Ultrasonic Vibration Assisted Grinding of Bio-Ceramic Materials." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1188.

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Bio-ceramics have been widely employed in dental restorations, repairing bones, and joint replacements etc. due to their high compressive strength, superior wear resistance, and natural aesthetical appearance. Abrasive machining processes such as grinding have been used to obtain a smooth surface and desired dimensions for bio-ceramic parts. However, a major technical issue resulted from abrasive machining processes is edge chipping. The edge chipping could lead to the failure of bio-ceramics and has to be removed by downstream processes. It not only increases machining cost but also introduces potential deficiencies into the bio-ceramic parts. This paper present an experimental study on the edge chipping in ultrasonic vibration assisted grinding (UVAG) of bio-ceramic materials. An innovative UVAG system is developed and employed to machine three bio-ceramic materials (Lava, partially fired Lava, and Alumina). The effect of ultrasonic vibration on the edge chipping is investigated by observing under scanning electron microscope (SEM). The experimental results show that the edge chipping can be significantly reduced with the assistance of ultrasonic vibration. For the diamond grinding, there exist a lot of edge chippings along the machined slot edge that varies from 0.3 mm to 1.2 mm, whereas for the UVAG, there are only several tiny edge chippings with size from ∼0.03 mm to ∼0.1 mm along the machine slot edge. The results indicate that the UVAG system developed has a great potential to be used in production to improve bio-ceramic materials’ surface integrity, in particular, edge chipping quality.
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