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tribological tests

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400089
EISBN: 978-1-62708-316-4
... they are applied and removed and how their pressure and temperature ranges can be extended by performance enhancing additives. The chapter also explains how sheet metal forming lubricants are evaluated in the laboratory as well as on the production floor and how tribological tests are conducted to simulate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300363
EISBN: 978-1-62708-323-2
... to be hip and knee implants, which are given the most attention in this book as well. 13.2 Dental Tribology For decades, researchers have assessed the relative abrasivity of commercially available toothpastes, and they are still testing new options. The problem is wear through the enamel of the tooth...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300001
EISBN: 978-1-62708-323-2
... of laboratory testing of various candidates from each materials group. Modeling and artificial intelligence in tribology are not currently at the point where designers can ask a computer search engine to pick a material for a wear application, as will be pointed out in the book. Testing is often the best way...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300421
EISBN: 978-1-62708-323-2
... contact pressures may be locally much higher than anticipated in design calculations. That is why load (force) is usually accelerated in bench tests. Winners in bench tests are screened further, then maybe in prototype assemblies; this is the common methodology. Tribological property information...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300301
EISBN: 978-1-62708-323-2
.... This is not a significant problem, but users must be aware of it. Type 304 stainless steel is the same from any manufacturer from any place in the world. Polystyrene is different (somewhat) from every compounder. Testing (tribological) is usually necessary when trying to use a plastic or elastomer from multiple suppliers...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300199
EISBN: 978-1-62708-323-2
... Pressure Velocity Limit The pressure velocity (PV) limit is a term that originated in plastic bushing tribology, but the concept applies to all tribosystems. A common plastic wear test is to hold the load constant and vary the velocity until an exponential increase in wear rate or friction occurs...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300163
EISBN: 978-1-62708-323-2
...-body abrasion rate of the copper alloys tested in Fig. 6.6 Wear rate, cm3/min Chapter 6: Tribological Properties of Copper Alloys / 173 Fig. 6.8 Liquid erosion in a copper pipe which carries potable water from rain. A typical copper roof will last 100 years. The only thing keeping copper from being...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390145
EISBN: 978-1-62708-459-8
... Abstract This chapter provides a practical overview of the tools and techniques used to assess the tribological aspects of metal forming processes. It describes test methods that have been developed to evaluate bulk deformation and sheet metal forming processes along with lubricant rheology...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300335
EISBN: 978-1-62708-323-2
... surface hardening 12.1 When to Use Material Modifications When a material does not meet service expectations in a tribosystem, there are two choices: try a different material, or alter the wear surface to improve its tribological performance. Changing the underperforming material or materials can...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300121
EISBN: 978-1-62708-323-2
.... Calculate solutions with tribological models. Simulate the tribosystem and test candidate couples. The low-cost solution to existing or potential tribology problems is option number one, which is to use existing tribological knowledge to solve the problem. For example, fretting damage is caused...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390389
EISBN: 978-1-62708-459-8
..., and strains and the effects of strain hardening on workpiece materials. It presents test methods for evaluating process tribology, describes lubrication and wear control approaches, and discusses the factors, such as surface roughness, lubricant breakdown, and adhesion, that can lead to galling and other...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300227
EISBN: 978-1-62708-323-2
... carbon content) of the common Stellite alloys, and it is often used as a test standard for cavitation and liquid erosion applications. Overall, cobalt-base, Stellite-types of alloys have significant utility in tribological applications. Their use, however, is limited by their high cost. They cannot...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300271
EISBN: 978-1-62708-323-2
...-friction member in these tests. Fig. 10.5 Coefficient of friction of various ceramics in block-on-ring testing, where * indicates thermal spray coatings Adhesive Wear Alumina and all the ceramics that have tribological utility are sintered into shapes. If an application involves rubbing...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
.... A related phenomenon is different test rigs may produce different friction coefficients for the same tribocouple . Many tribology researchers have shown that using different test rigs on the same tribocouple will likely produce different results. Figure 2.20 shows individual test results from three...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300179
EISBN: 978-1-62708-323-2
... of the oil) for decades. 7.6 Important Grades for Tribological Applications Gray Irons The ferritic gray irons (class 20) (Fig. 7.3) are not generally used for tribological applications, other than perhaps for weights for test machines. The class 35 50 grades of gray cast iron have a pearlite matrix...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300391
EISBN: 978-1-62708-323-2
... Abstract This chapter covers the tribological properties of different types of oil, greases, solid lubricants, and metalworking and traction fluids. It explains how lubricants are made, how they work, and how they are applied and tested. It also discusses the fundamentals of lubrication...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
..., and the tribology of metal, ceramic, and polymer surfaces in contact. It also discusses the nature of rolling friction and provides helpful design guidelines. engineering design mechanical friction EVERY PUBLIC AREA in every public building in every country in the world probably has lawyers concerned...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390007
EISBN: 978-1-62708-459-8
... Abstract This chapter presents a qualitative and quantitative overview of the stresses, strains, forces, and energy associated with metalworking processes and the tribological behavior of metals. It covers key concepts necessary for understanding metalworking tribology, including plastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
... of polymers are then discussed. The article further includes a case study describing the tribological performance of nylon. It ends by presenting some examples of wear failures of plastics. wear elastomers thermosets glassy thermoplastics semicrystalline thermoplastics lubricants nylon...