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ASM Handbook

Mechanical Testing and Evaluation

Edited by
Howard Kuhn
Howard Kuhn
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Dana Medlin
Dana Medlin
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ASM International
Volume
8
ISBN electronic:
978-1-62708-176-4
Publication date:
2000
Book Chapter

Recovery Hopkinson Bar Techniques

By
Sia Nemat-Nasser
Sia Nemat-Nasser
University of California
,
San Diego
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Published:
2000
Page range:
477 - 487

Abstract

This article illustrates the momentum-trapping scheme in the incident bar and stress-reversal technique which is used to change the strain rate during the course of Hopkinson bar compression or tension experiments. It describes techniques to recover the sample after it has been subjected to a cycle of compression followed by tension or tension followed by compression with illustrations. The article provides information on the recovery dynamic testing of hard materials such as ceramics and ceramic composites and explains high-temperature dynamic recovery tests. The recovery of the sample that has been subjected to a single stress pulse allows a number of interesting applications, a few of which are reviewed.

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Sia Nemat-Nasser, 2000. "Recovery Hopkinson Bar Techniques", Mechanical Testing and Evaluation, Howard Kuhn, Dana Medlin

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