WIT Press


Thermomechanical Coupling Effects In Small Volumes Under High Loading Rates

Price

Free (open access)

Paper DOI

10.2495/SU000441

Volume

48

Pages

10

Published

2000

Size

1,534 kb

Author(s)

Y. Katz, K.B. Yoder & W.W. Gerberich

Abstract

Adiabatic Shear Bands (ASB) provide an additional plastic flow mechanism under high loading rates. This localized deformation behavior has been already well established. Generally, substantial efforts are currently invested into the understanding of small volume mechanical properties. As such the present study objective is the search for critical experiments regarding ASB initiation and propagation aided by nanomechanical testing. Materials, which included a glassy polymer (PMMA), poly crystalline metallic bulk surfaces (4340 steel and Pb-Sn alloy) and a 1 jum thin film of Ti on silicon, were investigated using nanoindentation and microscratch tests. The study revealed thermomechanical coupling effects associated with localized deformation and damage evo

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