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microscale friction test

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003281
EISBN: 978-1-62708-176-4
... Abstract This article describes the techniques for measuring friction, namely, inclined-plane method; friction test methods using weights and pulleys; friction tests of shafts and capstans; other types of friction tests, including standards; microscale friction tests; and friction testing under...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006387
EISBN: 978-1-62708-192-4
... ), many of the most common wear measurement methods, such as wear volume measurement and wear area measurement, were described relative to estimated wear. There also are various laboratory and bench tests to evaluate the friction and wear of lubricant and materials. First and foremost in these types...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005417
EISBN: 978-1-62708-196-2
..., and dynamic response of equipment. The article reviews the determination of friction coefficient using laboratory monitoring methods, indirect measurements, and the inverse method. It considers the determination of the interface heat-transfer coefficient by using the ring test and computer simulations...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006403
EISBN: 978-1-62708-192-4
... of components for a variety of functional purposes in machinery, machining, transport, process control, and medical applications ( Ref 1 , 2 ). The purpose of the systems approach is twofold. Tribological parameters and the systems approach help in the development of tests that quantify the effects of friction...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... Abstract This article focuses on characterizing the fracture-surface appearance at the microscale and contains some discussion on both crack nucleation and propagation mechanisms that cause the fracture appearance. It begins with a discussion on microscale models and mechanisms for deformation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... Abstract This article provides a description of the microscale models and mechanisms for deformation and fracture. Macroscale and microscale appearances of ductile and brittle fracture are discussed for various specimen geometries and loading conditions. The article reviews the general...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
...-scanning, and scratch tests. After a discussion on gear scuffing, information on the material-dependent adhesive wear and factors preventing adhesive wear is provided. adhesive wear coefficient of friction galling metal sliding contacts scoring scuffing seizure scratch tests twist compression...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006380
EISBN: 978-1-62708-192-4
... of contaminating films is one major reason for the very wide range of friction coefficients reported in the literature. Cleaning methods or exposure of the sliding partners to the environment prior to or during friction tests can affect the role of residual films, particularly when the normal forces are low...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... a is the average true axial stress, which is equal to the flow stress σ 0 or effective stress σ for homogeneous deformation. From constancy of volume during plastic deformation, D 0 2 h 0 = D 2 h , where h is the specimen thickness at any time in the test. If there is friction at the platen...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006410
EISBN: 978-1-62708-192-4
... Abstract This article focuses on environmental and application factors in solid friction. It covers the tribology of contact between a soft and hard material, including mechanisms and testing. The article describes the tribology of contact between a metal and tool during metalworking processes...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006434
EISBN: 978-1-62708-192-4
... distribution determined from high-resolution transmission electron microscopy (HRTEM), shown in Fig. 7 . This near-surface accumulation of Au is also shown when the Sb 2 O 3 and Au doped MoS 2 coating was tested in air with 15-20% RH ( Ref 40 ), as shown in Fig. 8 . Fig. 6 Friction traces for MoS 2...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006395
EISBN: 978-1-62708-192-4
... and wear, including methods of tribological testing and wear mechanisms of coatings, the reader is referred to the many relevant articles in this Volume (e.g., “Introduction to Tribology and Tribological Parameters,” “Basic Theory of Solid Friction,” “Fundamentals of Lubrication,” and “Wear Measurement...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006393
EISBN: 978-1-62708-192-4
... Numerous wear, friction, and fatigue tests have been reported for a wide range of Λ ( Ref 28 , 35 , 36 , 37 ). Figure 7 shows that coefficients of friction and wear vary with Λ. This implies that lower Λ values can lead to accelerated wear of rolling-element bearing surfaces. Wear damage can have...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... are summarized in this article. The most common testing techniques for workability prediction are discussed in “Bulk Workability Testing” in this Handbook. Much greater detail on these tests and on workability tests specific to a particular bulk forming process, such as forging, are given in subsequent articles...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002117
EISBN: 978-1-62708-188-7
... and friction processes. The shear direction influences the heating and straining of the chip in the primary process. In terms of metal cutting theory, this means that shear stress and shear direction must be determined simultaneously. Such theoretical analyses are usually based on the mechanics of the process...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.9781627081924
EISBN: 978-1-62708-192-4
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002401
EISBN: 978-1-62708-193-1
... ( Ref 1 ) produced under combined rolling and sliding loading conditions. In addition to cracking, contact fatigue can result in microstructural alterations, including changes in retained austenite, residual stress, and martensite morphology. When traction forces (frictional) are negligible...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006365
EISBN: 978-1-62708-192-4
... et al. ( Ref 62 , 106 ), who conducted oil-lubricated sliding tests under low-load conditions. Results of this investigation indicate that dimple shape has some effect, with the elliptical dimples providing the most pronounced friction reduction, especially in low-sliding-speed range, while...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006409
EISBN: 978-1-62708-192-4
... and thermoplastic material behavior at the microscale, as well as empirical value/model description for the dynamic coefficient of friction at the interface. Their accuracy is therefore determined by the validity and accuracy of these underlying models/values. In the context of current review on frictional heating...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006431
EISBN: 978-1-62708-192-4
... Abstract There are huge numbers of publications and data available on ceramics, especially the basic types that cover their friction, wear, tribological mechanisms, high-temperature behavior, tribochemistry, and also lubrication conditions. This article summarizes the key overall research...