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microscale friction test

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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
..., friction forces, and stress and strain distributions. It explains how to measure temperature between tooling and workpiece surfaces as well as surface topography and composition, film thickness, and wear. It also discusses the benefits of reduced-scale and simulation testing and the transfer of results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... happen in parts that are loaded near the elastic limit. It is important to note that the published elastic limit for different materials is a numerical quantity that is determined by using a specific set of test parameters, usually of relatively short duration. Long times at a stress level that may...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
... can result in microstructural alterations, including changes in retained austenite, residual stress, and martensite morphology. When sliding is imposed on rolling, the tangential forces and thermal gradient caused by friction alter the magnitude and distribution of stresses in and below...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390456
EISBN: 978-1-62708-459-8
... Abstract In contrast to most plastic deformation processes, the shape of a machined component is not uniquely defined by the tooling. Instead, it is affected by complex interactions between tool geometry, material properties, and frictional stresses and is further complicated by tool wear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
...- and microscale aspects of deformation and fracture, it is useful to study the load-carrying characteristics of an engineering material through its stress-strain curve obtained from a tension test. The information provided by such a curve is particularly useful to those involved with the plastic working of metals...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390100
EISBN: 978-1-62708-459-8
... is expected to fulfill a number of functions. Some of the requirements may be contradictory or mutually exclusive, and thus the formulation of a lubricant takes considerable skill. There are some lubricant attributes that are generally valid for the majority of applications: Controlled Friction . Low...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... of loading, specimen geometry, test environment, and the internal friction, thermal conductivity, and heat capacity of the material. The cumulative effect of heat generated per unit time under continual cyclic load may be described by ( Ref 20 ): (Eq 1) U ˙ g = π f E ″ σ max 2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
..., and remedial design. Wear, like corrosion, has multiple types and subtypes, is predictable to some extent, and is rather difficult to reliably test and to evaluate in the lab or in service. The types of wear discussed in this chapter include abrasive wear, erosive wear, adhesive wear, fretting wear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... history usually includes cyclic loads. Further, in conducting failure analysis, if we machine a test coupon from a location that has been subjected to plastic deformation, the stress-strain properties will possibly differ from those had the material not been so strained. Remember that the Bauschinger...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... and nondestructive tests, preparing and examining fractographs and micrographs, determining failure mode, writing the report, and developing follow-up recommendations. It also examines the fundamental mechanisms of failure, why they occur, and how to identify them by their characteristic features. failure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130111
EISBN: 978-1-62708-284-6
... of samples Preliminary examination of the failed part Nondestructive and mechanical testing Selection, identification, preservation, and/or cleaning of specimens Macroscopic examination and analysis and photographic documentation Microscopic examination and analysis Selection, preparation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... material properties, such as hardness and thermal conductivity. Increases in hardness translate to better wear resistance, although this can be tempered by a localized decrease in the fracture toughness at the microscale. Increases in thermal conductivity, combined with toughening mechanisms that resist...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770099
EISBN: 978-1-62708-337-9
.... Assessment of such a structure, at best, is qualitative (i.e., coarse, normal, or fine) and made from the features of the austenite decomposition products. If it is necessary to determine the austenite grain size, then the standard McQuaid-Ehn test is employed. In the McQuaid-Ehn test, a steel sample...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.9781627082679
EISBN: 978-1-62708-267-9
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290201
EISBN: 978-1-62708-319-5
... mixing, but vacuum is useful for removal of surface-adsorbed impurities, such as water. Extrudate from the mixer is pelletized to give millimeter-sized granules. Feedstock testing follows routine techniques. The melt drop test is common. Density is an important metric, measured using helium...