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On the Conversion of Plastic Work into Heat During High-Strain-Rate Deformation

Ravichandran, Guruswami and Rosakis, Ares J. and Hodowany, Jon and Rosakis, Phoebus (2002) On the Conversion of Plastic Work into Heat During High-Strain-Rate Deformation. In: Shock compression of condensed matter--2001 : proceedings of the Shock COmpression of Condensed Matter held in Atlanta, Georgia, June 24-29, 2001. American Institute of Physics Conference Proceedings. No.620. American Institute of Physics , Melville, NY, pp. 557-562. ISBN 0735400687. http://resolver.caltech.edu/CaltechAUTHORS:RAVaipcp02

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Abstract

Heat generation in metals during high-strain-rate plastic deformation was investigated. Experiments were designed to measure the partition of plastic work into heat and stored energy during dynamic deformations under adiabatic conditions. A Kolsky pressure bar was used to determine mechanical properties at high strain rates while a servo-hydraulic material testing system was used at low strain rates. For dynamic loading, in-situ temperature changes were measured using a high-speed infrared detector. The dependence of the fraction of plastic work converted to heat on strain and strain rate was determined for an aluminum 2024-T3 alloy and alpha-titanium. The flow stress and the fraction of plastic work converted to heat for 2024-T3 aluminum alloy were found to be a function of strain but not of the strain rate while they were found to be strongly dependent on strain rate for alpha-titanium.


Item Type:Book Section
Additional Information:©2002 American Institute of Physics The research reported here was supported by the Office of Naval Research and the National Science Foundation and is gratefully acknowledged.
Group:GALCIT
Subject Keywords:plastic deformation; aluminium alloys; titanium; temperature measurement; heat; mechanical energy storage
Record Number:CaltechAUTHORS:RAVaipcp02
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:RAVaipcp02
Alternative URL:http://dx.doi.org/10.1063/1.1483600
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2824
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:28 Apr 2006
Last Modified:29 Sep 2016 23:31

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