Error Bounds on Elastic-Plastic Strain Wave Measurements

[+] Author and Article Information
J. G. Wagner

Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, Pa.

J. Basic Eng 93(4), 478-480 (Dec 01, 1971) (3 pages) doi:10.1115/1.3425284 History: Received May 10, 1971; Online October 27, 2010


Bounds are established on the errors associated with elastic-plastic strain wave measurements involving finite gage lengths. Attention is restricted to the case of one-dimensional wave propagation in a semi-infinite bar. A bi-linear model of the stress-strain behavior provides a means of calculating realistic upper and lower bounds on the relative error of amplitude measurements. Rise time errors are also discussed and illustrated.

Copyright © 1971 by ASME
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