For some metal alloy, a true stress of 415 MPa (60,175 psi) produces a plastic true strain

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For some metal alloy, a true stress of 415 MPa (60,175 psi) produces a plastic true strain of 0.475. How much will a specimen of this material elongate when a true stress of 325 MPa (46,125 psi) is applied if the original length is 300 mm (11.8 in.)? Assume a value of 0.25 for the strain-hardening exponent n.
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Materials Science and Engineering An Introduction

ISBN: 978-0470419977

8th edition

Authors: William D. Callister Jr., David G. Rethwisch

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