Dynamic friction of nano-materials
作者:
H. Zhang,
A. Patanella,
H. D. Espinosa,
Kook D. Pae,
期刊:
AIP Conference Proceedings
(AIP Available online 1900)
卷期:
Volume 505,
issue 1
页码: 1225-1228
ISSN:0094-243X
年代: 1900
DOI:10.1063/1.1303682
出版商: AIP
数据来源: AIP
摘要:
A modified Kolsky bar method consisting in the dynamic loading in shear of a pre-compressed thin-wall sample has been developed. The technique allows the identification of the transient response from static to kinetic friction under sliding velocities of about 2–6 m/s. The normal and tangential tractions are measured independently and hence a dynamic friction coefficient identified. The sliding velocities obtained with the Kolsky bar are smaller than those obtained in pressure-shear friction experiments. Hence, the techniques are complementary and provide valuable information for the formulation of friction laws at sliding velocities, pressures and temperatures typical of manufacturing processes, dynamic shear fracture, metal forming, etc. The friction properties of two nano-ceramics sliding against metals, cermets and other ceramics are here reported. ©2000 American Institute of Physics.
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