Log in

Relevant bibliographies by topics / Wear testing / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Wear testing.

Dissertations / Theses on the topic 'Wear testing'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Wear testing.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Adler, W. Alexander III. "Testing and Understanding Screwdriver Bit Wear." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36701.

Full text

Abstract:

This thesis is focused on gaining a better knowledge of how to design and test Phillips screwdriver bits. Wear is the primary concern in applications where the bit is used in a power driver. Such applications include drywalling, decking and other construction and home projects. To pursue an optimal design, designers must have an understanding how the bit geometry changes with wear. To make use of the geometrical data, the designer must also have an understanding of the fundamentals of the bit/screw surface contact and its effect on force distribution. This thesis focuses on three areas. Fir

APA, Harvard, Vancouver, ISO, and other styles

2

Quirke, SJ. "Abrasive wear testing of steels in soil." Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/21798.

Full text

Abstract:

Bibliography: pages 133-136.<br>A survey has been made of the quality and type of materials used for tillage tools in South Africa. Conclusions have been drawn regarding the inadequacy of the manufacturing processes used and the resultant quality of the tool material. A rig has been designed for the abrasion testing of materials in soil. The reproducibility of the method has been shown to be high and an evaluation has been made of the relative wear resistance of a series of ·heat treated steels. A medium carbon boron steel has been shown to have great promise as a tillage tool material because

APA, Harvard, Vancouver, ISO, and other styles

3

Wei, Gang. "Development of an abrasive wear resistance test and the study of correlation between two-body and three-body abrasive wear." Thesis, Queensland University of Technology, 1991. https://eprints.qut.edu.au/36472/1/36472_Gang_1991.pdf.

Full text

Abstract:

In this study, a standardized coal abrasive wear resistance (AWR) test has been developed by utilizing a modified YGP test rig (initially developed by Yancey, Geer and Price) and the manufacture of a specified abrasive (CB-Ql abrasive). The later was developed to meet standardized test requirements since coal was not adequate for this purpose. The standardized A WR test was then used to test an as-cast and heat treated 3.5C5Cr5Mo5V white cast iron - an experimental abrasive wear resistant material. To evaluate the ranking ability of the test and to study the three-body wear mechanisms

APA, Harvard, Vancouver, ISO, and other styles

4

Bowsher, John G. "Accelerated wear testing methodologies for total hip replacements." Thesis, Queen Mary, University of London, 2001. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1513.

Full text

Abstract:

Over the last three decades tribological studies of polyethylene total hip replacements have been undertaken using a simplified model of normal walking. As hip prostheses are being implanted in younger and more active patients, coupled with the increased wear resistance of crosslinked polyethylene, such in vitro approximations in patient activity are limiting. Therefore an alternative wear testing methodology for total hip replacements has been proposed, measuring the influences of fast walking, stumbling and simulated jogging sequences, all at varying cycle speeds with both smooth and roughen

APA, Harvard, Vancouver, ISO, and other styles

5

Soonangi, Ganesh Prakruthi. "REVIEW OF DENTAL CROWNS AND THEIR WEAR TESTING." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2760.

Full text

Abstract:

The desire to replace missing teeth with the aim to improve health and quality of life dates back to a thousand years ago. Although research on dental crown designs, materials and techniques has increased in recent years and is expected to grow in the future. In the past few decades, dental crown studies have gained high importance in dentistry due to their functionality, biocompatibility and good mechanical properties. This paper provides a comprehensive review of history and evolution of dental crowns. The goal of this study is to understand the dental crown materials and the differences in

APA, Harvard, Vancouver, ISO, and other styles

6

Mussa, Abdulbaset. "Wear characterization and wear mapping of a coated cutting tool : Development of cutting tool test fixture and wear testing." Thesis, Karlstads universitet, Science, Mathematics and Engineering Education Research (SMEER), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-37790.

Full text

Abstract:

Wear mechanisms of the cutting tools are well investigated worldwide. Usually researchers use the cutting process itself, turning by single point cutting, as their investigation method, which includes turning a metal cylinder with a pre-selected work-material and predetermined cutting conditions. Thereafter the tool worn surface is examined by scanning electron microscopy in order to characterize the tool wear mechanisms and tool failure. However, this may be the most appropriate way to investigate the wear mechanisms which occur during machining since it simulates the real operation. Metal cu

APA, Harvard, Vancouver, ISO, and other styles

7

Shipway, Philip Howard. "Erosive wear of brittle materials and its laboratory simulation." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282026.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Clarke, C. G. "The sliding wear of polymers against steel." Master's thesis, University of Cape Town, 1988. http://hdl.handle.net/11427/22007.

Full text

Abstract:

Bibliography: pages 89-93.<br>A laboratory wear testing facility has been developed to generate wear rate data for polymeric materials sliding at constant velocity against a hardened stainless steel base. The polymers investigated were ultra high molecular weight polyethylene (UHMWPE), ultra high molecular weight polyethylene-with a friction reducing additive (UHMWPE/FILL), polyoxymethylene (POM), poly(ethylene terephthalate) (PETP), molybdenum disulphide filled polyamide 6 (PA6/MoS₂) and graphite filled poly(amide-imide) (P(A-I)/GR). Testing was carried out as a function of sliding velocity b

APA, Harvard, Vancouver, ISO, and other styles

9

Olsson, Sara, and Linn Efsing. "Wear testing of high-alloy carbon steel used in mining tools." Thesis, KTH, Materialvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124595.

Full text

Abstract:

Wear is a commonly occurring degradation mechanism for materials and components in the rock drilling industry. The wear can occur by either abrasion or adhesive wear. Further corrosion and presence of water or other lubricating fluids with or without particles may influence the behavior. Which mechanism, or mechanisms, and under which conditions it occurs, as well as the relative wear rate is dependent on the actual operating conditions for the component. In the present study, commonly available and general test methods for wear on high-alloy carbon steel has been analyzed. The project has bee

APA, Harvard, Vancouver, ISO, and other styles

10

W, Lindvall Fredrik. "Adhesive wear testing and modelling of tool steels sliding against sheet metals." Doctoral thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31793.

Full text

Abstract:

Sheet metal forming is a manufacturing method used because of its versatility. Sheets are plastically deformed by a tool to create a product. A tool is expected to last for several 100,000 forming operations and efforts are made to optimize the tools. A common type of wear referred to as galling is the adhesion of sheet material to the tools. This problem has become more prevalent as new high strength sheet materials have been developed at the same time as lubricants have become heavily regulated. This has forced the development of new tool steels with improved resistance to galling. There are

APA, Harvard, Vancouver, ISO, and other styles

11

Oskarsson, Jakob. "Tribological testing of drill bit inserts." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-160584.

Full text

Abstract:

This thesis work sought to find a tribological testing method suitable for cementedcarbide drill bit inserts used when drilling rock. A review of the literature publishedon the matter showed that there are quite a few test methods developed for wearstudies with cemented carbides, but most of them were not designed for the rockdrilling industry. Published studies performed with the found methods and articleswith analyzed field tests have been studied. It is generally agreed upon that the stepsof wear is that the binder disappears first, followed by removal of carbide grains. Themechanisms of bi

APA, Harvard, Vancouver, ISO, and other styles

12

Conroy, Ashley Paul. "The development of a high stress abrasive wear tester." Thesis, Queensland University of Technology, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

13

Hassila, Karlsson Carl Johan. "Tribological testing of top hammer drill buttons." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-280881.

Full text

Abstract:

In the present work further modifications are implemented to an existing test setup for the evaluation of the wear of cemented carbide drill buttons in rock drilling applications. The test setup has been evaluated in previous diploma works, which has shown that the test successfully mimics the wear seen in rock drilling applications. The new modifications include friction and normal force measurements together with the collection of rock debris. This has been made possible by redesigning the sample holder and by manufacturing equipment making rock debris collection possible. The new modificati

APA, Harvard, Vancouver, ISO, and other styles

14

Akchurin, Aydar. "Lubrication and Wear at Metal/HDPE Contacts." Thesis, North Dakota State University, 2012. https://hdl.handle.net/10365/26503.

Full text

Abstract:

In the thesis lubrication and wear at metal/HDPE contacts was addressed. In particular this type of contact occurs in artificial joint replacements. Wear of HDPE was recognized as a major factor limiting device performance. In the thesis, fully implicit fully coupled numerical approach was developed to simulate lubrication and wear. Approach allows solving stationary and transient problems for rough surfaces in a wide range of parameters. Wear coefficients were estimated from experimental data. Wear particles formed in wear process were investigated. Particles were found to be approximat

APA, Harvard, Vancouver, ISO, and other styles

15

Hussain, Azad. "Characterisation of wear particles genarated during accelerated testing of total hip replacement." Thesis, Queen Mary, University of London, 2004. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1783.

Full text

Abstract:

Total hip replacements have been in use for over 30 years, and have shown great improvement from design to surgery since the first generation of implants were introduced. The greater need for hip replacements has led to the development of test methods that can be applied in the lab, which can predict the lifetime of a particular implant. To achieve this aim this study has sought to investigate key parameters, which may affect wear and its subsequent effect upon the production of particles for various material combinations and bearing geometries, under high (jogging) and low (walking) loads, wi

APA, Harvard, Vancouver, ISO, and other styles

16

North, Gary S. "Metal Coupon Testing in an Axial Rotating Detonation Engine for Wear Characterization." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1588770787704665.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Kozuka, Ryohei. "Studded tire wear - comparison between British Pendulum and Pin on disc testing." Thesis, KTH, Maskinkonstruktion (Avd.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209485.

Full text

Abstract:

Studded tires are widely used during the winter season in the Nordic countries due to their performance qualities in extreme cold temperatures, however they cause wear on the road surface. This is not only an economic problem but also a health problem due to amount of airborne wear particles that are generated. Therefore, a test method under controlled laboratory conditions for tire and road wear is needed. In this thesis,studded tire wear on concrete road samples are studied using two test equipments; a Pin on disc and a British pendulum rig test. Three different types of concrete road mate

APA, Harvard, Vancouver, ISO, and other styles

18

Thompson, Matthew Thomas. "Design of a Cyclic Sliding, Dynamically Loaded Wear Testing Device for the Evaluation of Total Knee Replacement Materials." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34371.

Full text

Abstract:

During normal walking, the relative motion of the human knee involves flexion/extension, anterior/posterior sliding, and medial/lateral rotation. As well, the knee experiences a complex, dynamic loading curve with a peak of up to seven times body weight. However, most wear testing machines that have been used to evaluate total knee replacement materials are unidirectional and/or apply only static force. This thesis presents an alternate wear testing device capable of simulating the most prevalent motions of the knee, and applying physiologically-correct loading to the material interface. B

APA, Harvard, Vancouver, ISO, and other styles

19

From, Anna. "A wear test mimicking the tribological situation in rock drilling." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-176977.

Full text

Abstract:

This thesis work is performed at Sandvik Mining Rock Tools, a world leading supplier of rock drilling tools. The work is part of developing a new tribological wear test method for cemented carbide drill bit inserts. The test method has earlier been judged successful in mimicking the rotary-percussive rock drilling process because it gives the same wear mechanisms as have been observed for inserts used in rock drilling. During testing the cemented carbide drill bit insert is pressed against a moving rock surface while water and particles are added to the contact area. The particles are present

APA, Harvard, Vancouver, ISO, and other styles

20

Walker, Jason R. "Design, fabrication, and testing of intermetallic bonded diamond composites for high wear applications /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1328064711&sid=7&Fmt=2&clientId=1509&RQT=309&VName=PQD.

Full text

Abstract:

Thesis (M.S.)--Southern Illinois University Carbondale, 2007.<br>"Department of Mechanical Engineering and Energy Processes." Includes bibliographical references (leaves 87-90). Also available online.

APA, Harvard, Vancouver, ISO, and other styles

21

Thakur, Lokesh K. "Design and development of an impact wear testing device for the minerals industry." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80146.

Full text

Abstract:

World wide steel consumption as grinding media is estimated at over 600,000 tons per annum. Total steel media wear in a given mill (ball or SAG) grinding process is a product of three recognized wear mechanisms---impact, abrasion, and corrosion of which the contribution of each wear mechanism to total media wear has not been well established.<br>A total media wear model can be defined on the assumption that the effect of each wear mechanism can be independently determined and this effect can be tied to mill charge motion as determined or estimated using a charge motion simulator, which

APA, Harvard, Vancouver, ISO, and other styles

22

Su, Chuang. "Integrated Experimental Methods and Machine Learning for Tire Wear Prediction." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/99929.

Full text

Abstract:

A major challenge in tire research, is tire wear modeling. There are too many factors affecting tire wear, and part of those factors are difficult to be accurately expressed in physics and math. The objective of this research is to develop a machine learning based rubber sample wear model, and find the correlation between sample wear and tire wear. To develop this model, accurate and diverse wear data is necessary. The Dynamic Friction Tester (DFT) was designed and built for this purpose. This test machine has made it possible to collect accurate rubber sample wear data which has been validat

APA, Harvard, Vancouver, ISO, and other styles

23

Damarla, Gowrisankar. "Determination of Wear in Polymers Using Multiple Scratch Test." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4627/.

Full text

Abstract:

Wear is an important phenomenon that occurs in all the polymer applications in one form or the other. However, important links between materials properties and wear remain illusive. Thus optimization of material properties requires proper understanding of polymer properties. Studies to date have typically lacked systematic approach to all polymers and wear test developed are specific to some polymer classes. In this thesis, different classes of polymers are selected and an attempt is made to use multiple scratch test to define wear and to create a universal test procedure that can be employed

APA, Harvard, Vancouver, ISO, and other styles

24

Trilk, Nigel Craig. "Wear mapping methodology and its application to the tribology of powder metal materials." Thesis, Brunel University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296215.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Renman, Viktor. "Tribological testing of DLC coatings for automotive applications." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-177355.

Full text

Abstract:

In this work, the friction and wear behavior of three DLC coatings was evaluated in various conventional and alternative fuels as well as in commercially available formulated engine oils and additive-free synthetic oil. The first DLC has a thin top-coating of hydrogenated amorphous carbon (a-C:H), the second consists of Si-doped DLC (a-C:H:Si) and the third is a W-doped multilayered structure of a-C:H and a-C:H:W. The tribological tests were performed using a ball-on-flat reciprocating rig at low contact pressures. Methods such as white light interferometry (VSI), scanning electron microscopy

APA, Harvard, Vancouver, ISO, and other styles

26

Langenhoven, Jacobus. "The effects of humidity and soluble water content on the lubricity testing of a n-hexadecane and palmitic acid test fluid." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/46242.

Full text

Abstract:

Liquid fuel lubricity testing is known to be sensitive to the humidity of the surrounding atmosphere. The effect reported does however not seem to be universal for all diesel types according to available literature. This study was limited to the use of n-hexadecane as base fluid with addition of between 100 - 2000 ppm of palmitic acid (PA) as lubricity enhancer. The fuel spectrum was kept simple to allow a more fundamental approach by limiting the extent of possible chemical reactions. Both wear and seizure load testing were performed. The effect of water on both tests was found to be:  Wea

APA, Harvard, Vancouver, ISO, and other styles

27

Covert, Rebeccah Jean. "Friction and wear testing of a new biomaterial for use as an articular cartilage substitute." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Dyson, C. J., R. J. Chittenden, Martin Priest, M. F. Fox, and W. A. Hopkins. "Representative tribometer testing of wire rope fretting contacts: the effect of lubrication on fretting wear." Taylor & Francis, 2020. http://hdl.handle.net/10454/17677.

Full text

Abstract:

Yes<br>Fretting wear has a significant influence on wire rope fatigue life when in cyclic bending, particularly for crossed-wire contacts, where the interfacial motion of the surfaces is complex and multi-axial. To simulate these contacts in a controlled manner, a laboratory-scale, crossed-cylinder, reciprocating fretting wear test was developed. A broad range of contemporary lubrication technologies were evaluated using this method and a systematic multivariate statistical analysis was performed to identify the most significant lubrication-related parameters with respect to these fretting

APA, Harvard, Vancouver, ISO, and other styles

29

Freelin, Julie Michelle. "Inductively coupled plasma atomic emission spectroscopy applied to the analysis of wear metals in lubricating oil and related studies." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185307.

Full text

Abstract:

The accurate determination of wear metals in lubricating fluids is of great potential value in the proper maintainence of all types of machinery. Savings of both time and money have been reported in the military and civilian sectors following the implementation of routine wear metal screening in lubricating oils. Current methods are known to discriminate against metals present in the form of particulates. The first part of this dissertation focusses on the direct determination of wear metals in lubricating oils by atomic emission spectroscopy utilizing an inverted inductively coupled plasma as

APA, Harvard, Vancouver, ISO, and other styles

30

Wang, G.-L. "The running-in wear of automotive cam and follower systems used for lubricant testing and development." Thesis, Swansea University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639339.

Full text

Abstract:

The main concern of this thesis was to investigate the running-in wear of automotive cam-follower systems used in the testing of lubricants and to develop wear particle analysis methods using image processing with particular reference to shape determination. Two kinds of cam-follower test rig were used to investigate the behaviour. The initial tests were carried out using a motored Peugeot TU3 cylinder head. The change in surface topography occurring through wear was examined as a basis for establishing an objective method of wear evaluation. The second series of tests was performed using a sp

APA, Harvard, Vancouver, ISO, and other styles

31

Poppeliers, Christian. "Wear Due to the Physical and Petrographic Properties of Rocks and their Dynamic Interactions with Mining Equipment." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5149.

Full text

Abstract:

Wear to mining equipment reduces operational efficiency. If wear rates can be predicted, appropriate matching of alloys to the mine' s geologic conditions can aid in improving the operational efficiency. This study addresses rock characteristics which lead to wear. Macroscopic rock tools which lead to wear include sharp edges and comers on rocks. During a rock/equipment interaction, these rock tools cause high point pressures on the surface of the equipment which leads to ductile cutting and gouging of the surface and subsequent removal of metal. Hard mineral grains, or grain tools, produce ab

APA, Harvard, Vancouver, ISO, and other styles

32

Pendergast, Megan. "Environmental effects on nano-wear of gold and KBr single crystal." [Tampa, Fla.] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002306.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Low, Benjamin. "Design of a 3 axis wear testing device to evaluate the effect of slide to roll ratio on ultra high molecular weight polyethylene wear in total knee replacements." Thesis, University of Canterbury. Mechanical Engineering, 2005. http://hdl.handle.net/10092/1105.

Full text

Abstract:

Multidirectional motion occurs in total knee replacements (TKR), is a major factor in ultra high molecular weight polyethylene (UHMWPE) wear and is a requirement for wear tester and simulators. There are three ways the femoral component can move relative to the tibial component; sliding, rolling and gliding and these are defined by the slide to roll ratio. Previous wear tester research has investigated the effects of multidirectional motion and slide to roll ratio, individually but not combined. The project aim was to design a machine that combined multidirectional motion with variable slide t

APA, Harvard, Vancouver, ISO, and other styles

34

Tatara, Dianne Marie. "A wear test of men's polypropylene indoor exercise prototypes with heat and moisture measurements: an experimentation with infrared thermography." Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53190.

Full text

Abstract:

A wear test of men’s polypropylene indoor exercise prototypes was conducted to investigate heat and moisture measurements during exercise and compare the results to a man exercising in a partially nude condition. The usefulness of infrared thermography as instrumentation for observation of surface temperature during a wear test was also investigated. Based on Univariate Analysis of Variance with Repeated Measures, one prototype was shown to react in a more similar manner to the skin of a man exercising in a partially nude condition. Pearson Correlation was used to determine the relationships

APA, Harvard, Vancouver, ISO, and other styles

35

Strand, Henrik. "Design, testing and analysis of journal bearings for construction equipment." Doctoral thesis, Stockholm : Department of Machine Design, Royal Institute of Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-429.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Müller, Ruan. "Characterising the stress-life response of mechanical formed AISI-1008 steel plate components." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1008102.

Full text

Abstract:

The main purpose of this research project was to determine the fatigue-life behaviour of AISI 1008 sheet steel which has been mechanically formed to a radius of curvature of 120mm and then to correlate the fatigue-life behaviour to that of the parent or “as manufactured” material. During the forming process it was felt important to induce plastic strain through stretch-bending by clamping the sides of a plate sample’s (width) edges in the bending fixture before being bent by a single acting mechanical press. It was determined through actual testing that there was a decrease in fatigue-life whe

APA, Harvard, Vancouver, ISO, and other styles

37

Matulová, Anna. "Vysoce legované litiny Ni-resist a jejich vlastnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401520.

Full text

Abstract:

This master’s thesis deals with high-alloyed Ni-Resist cast irons and their properties. The theoretical part describes their chemical composition and individual elements from which are these cast irons composed, their characteristic properties and examples of use in practice. Furthermore, the work focuses on the wear of materials, especially on abrasive wear, because Ni-Resist casts iron exhibit a number of specific properties, such as corrosion resistance, refractoriness and heat resistance and also abrasion resistance, on which is this thesis focused. Attention is also paid to other abrasion

APA, Harvard, Vancouver, ISO, and other styles

38

Hennessey, Ann M. "Use of physiological and perceptual dimensions of clothing comfort to evaluate nonwoven protective fabrics through wear testing of limited-use coveralls." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/45213.

Full text

Abstract:

The purpose of this research was to identify nonwoven protective fabrics designed to have improved comfort properties over a fabric currently used in limited-use chemical protective clothing by using physiological and perceptual dimensions of comfort. Fabrics that are both waterproof and breathable have potential for use in chemical protective clothing by repelling liquid while allowing the diffusion of moisture vapor from the body. Microporous laminated fabrics used in chemical protective clothing allow moisture to evaporate from the body and move through the fabric while preventing liquid

APA, Harvard, Vancouver, ISO, and other styles

39

Bryngelsson, Maria. "Relations between the performance of a coated cutting tool and the composition and properties of the wear resistant coating : A study including first principles modeling, mechanical properties and technological testing." Thesis, Uppsala universitet, Materialteori, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-207566.

Full text

Abstract:

This thesis work was performed at AB Sandvik Coromant and aimed to enhance the knowledge about the relationships between the performance of TiN and TiAlN-coated cutting tools in metal turning and their mechanical and chemical properties. Measurements of coating material properties and turning wear tests in annealed tool steel Sverker 21, stainless steel 316L, grey cast iron V314 and nodular cast iron SS0727 were performed. The cutting temperatures were estimated from FEM-simulations. To find the dominant wear mechanism and identify the properties that are most important for the resistance agai

APA, Harvard, Vancouver, ISO, and other styles

40

Ghasemi, Rohollah. "The influence of microstructure on mechanical and tribological properties of lamellar and compacted irons in engine applications." Doctoral thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Material och tillverkning, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-32052.

Full text

Abstract:

Lamellar graphite iron (LGI) is commonly used in diesel engine applications such as piston rings–cylinder liner where an excellent combination of physical and tribological properties is essential to avoid scuffing and bore polishing issues. The excellent tribological behaviour of LGI alloys is related to the graphite lamellas, which act as solid lubricant agents by feeding onto the tribosurfaces under sliding conditions. However, increasingly tighter emissions and fuel economy legislations and the higher demands on enhanced power and durability have encouraged both engine designers and manufac

APA, Harvard, Vancouver, ISO, and other styles

41

Cozza, Ronaldo Câmara. "Estudo do comportamento do coeficiente de desgaste e dos modos de desgaste abrasivo em ensaios de desgaste micro-abrasivo." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-31032008-101929/.

Full text

Abstract:

Esta Dissertação tem por objetivo estudar o comportamento de diferentes materiais sob a ação de desgaste micro-abrasivo. Como parte do trabalho, foi projetada e construída uma máquina de ensaio desgaste por micro-abrasão por esfera rotativa fixa, com configuração mecânica com diferenças em relação às observadas na literatura (Gee et al., 2005). Como corpos-de-prova, foram utilizadas pastilhas intercambiáveis de metal duro (classe P20) e aço ferramenta M2. As esferas foram de aço AISI 1010 cementado e aço AISI 52100 temperado e revenido. Durante os ensaios, foi inserida entre a esfera e o corpo

APA, Harvard, Vancouver, ISO, and other styles

42

KUNIOSHI, CLARICE T. "Estudo do comportamento de erosao-oxidacao de materiais compositos de NiCr com WC e Crsub(3)Csub(2)." reponame:Repositório Institucional do IPEN, 2004. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11239.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:49:49Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:02:19Z (GMT). No. of bitstreams: 1 09819.pdf: 15341022 bytes, checksum: 089b1783177dd73c7433320bd2e0de7c (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP<br>FAPESP:98/05906-6

APA, Harvard, Vancouver, ISO, and other styles

43

Euchler, Eric, Gert Heinrich, Hannes Michael, et al. "Chip & Cut Tests an Elastomeren." Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-198864.

Full text

Abstract:

Dieser Vortrag stellt einen neuartigen Prüfstand vor, mit welchem das Chip & Cut Verhalten von Elastomeren charakterisiert werden kann. Sowohl theoretischer Hintergrund als auch praktische Erkenntnisse werden diskutiert. Die Vorstellung der Praxisrelevanz dieser Untersuchungen steht im Fokus des Vortrags.

APA, Harvard, Vancouver, ISO, and other styles

44

Sato, Fernando Luís. "Uso de ensaios de microesclerometria instrumentada no estudo das propriedades da austenita expandida." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-25032015-120024/.

Full text

Abstract:

A excelente resistência à corrosão dos aços inoxidáveis austeníticos é a principal característica de sua ampla gama de aplicações nas mais diversas indústrias. Entretanto, as limitadas propriedades mecânicas da austenita, restringem o uso dessas ligas em sistemas que requeiram melhor desempenho tribológico sem prejuízo de sua resistência à corrosão. Métodos de endurecimento superficial convencionais tendem a formar precipitados que reduzem a disponibilidade dos elementos responsáveis pela passivação da liga, favorecendo a ação de agentes corrosivos. A descoberta de uma fase supersaturada em in

APA, Harvard, Vancouver, ISO, and other styles

45

Viat, Ariane. "Troisième corps à l'interface céramique métal sous chargement de fretting usure à hautes températures." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEC054.

Full text

Abstract:

Dans un turboréacteur civil, le contact aube/disque de la turbine basse pression est soumis à un cyclage thermomécanique dû aux dilatations et déplacements différentiels des pièces pendant les phases de vol. Ce cyclage implique des micro-mouvements alternés relatifs, c’est-à-dire du fretting, à l’interface aube/disque. Le fretting à l’étude ici concerne un contact céramique-métal, en vue de comprendre le comportement tribologique des futures aubes revêtues de céramique en remplacement des pièces métalliques traditionnelles. Dans un premier temps, différents revêtements sont comparés vis-à-vis

APA, Harvard, Vancouver, ISO, and other styles

46

Vale, Jõao Luiz do. "Estudo do comportamento tribológico do politetrafluoretileno em deslizamento sem lubrificação contra aço inoxidável." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/812.

Full text

Abstract:

O presente trabalho discute o comportamento tribológico do politetrafluoretileno (PTFE), polímero amplamente utilizado na indústria em inúmeras aplicações tribológicas sem lubrificação, de onde se pode destacar sua utilização em mancais de deslizamento. Fez-se uma revisão bibliográfica buscando entender quais os principais parâmetros que influenciam o atrito cinético e os mecanismos que operam em polímeros. Foram realizados, ensaios de longa duração, em uma máquina de atrito cinético, desenvolvida e construída no Laboratório de Superfícies e Contato (LASC) da UTFPR, na qual uma bucha poliméric

APA, Harvard, Vancouver, ISO, and other styles

47

Aagard, Erik A. "A Pre-Design Study Of Patient And Medical Professional Attitudes And Reactions Towards The Colors Of Medical Scrubs." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218038251.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Bobobee, Emmanuel Y. H. "Performance analysis of draught animal-implement system to improve productivity and welfare /." Uppsala : Dept. of Biometry and Engineering, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200770.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Sladeček, Martin. "Správa času - Android app s filosofií First-Things-First (S. Covey)." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-264967.

Full text

Abstract:

The aim of this thesis is the design and implementation of mobile application for time management on Android. It is based on First Things First philosophy by Stephen Covey. The main effort is to design application for various devices like mobile phones, tablets and smart watches. Modification of the design, bugfixes and new functions are based on user's monitoring, which is part of this thesis.

APA, Harvard, Vancouver, ISO, and other styles

50

Miró, Mezquita Guillermo. "Estudio del comportamiento y de la influencia en el desgaste de los aceites lubricantes de baja viscosidad en MCIA." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/78615.

Full text

Abstract:

The current socio-economic and environmental context worldwide, with different actors and needs, requires continued progress towards energy efficiency and environmental improvements in order to create a sustainable future, and this implies a scientific and technologic effort to achieve the proposed goals. Transport by propulsive systems based on reciprocating internal combustion engines (ICE) is one of the major agents affecting future environmental sustainability. Included in the wide research done in this area, one of the options considered is the use of low viscosity oils (LVO) as an optio

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!