Hodowany, J. and Ravichandran, G. and Rosakis, A. J. and Rosakis, P. (2000) Partition of Plastic Work into Heat and Stored Energy in Metals. Experimental Mechanics, 40 (2). pp. 113-123. ISSN 0014-4851. https://resolver.caltech.edu/CaltechAUTHORS:20150226-165652488
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Abstract
This study investigates heat generation in metals during plastic deformation. Experiments were designed to measure the partition of plastic work into heat and stored energy during dynamic deformations under adiabatic conditions. A servohydraulic load frame was used to measure mechanical properties at lower strain rates, 10^(−3) s^(−1) to 1 s^(−1). A Kolsky pressure bar was used to determine mechanical properties at strain rates between 10^3 s^(−1) and 10^4 s^(−1). For dynamic loading, in situ temperature changes were measured using a high-speed HgCdTe photoconductive detector. An aluminum 2024-T3 alloy and α-titanium were used to determine the dependence of the fraction of plastic work converted to heat on strain and strain rate. The flow stress and β for 2024-T3 aluminum alloy were found to be a function of strain but not strain rate, whereas they were found to be strongly dependent on strain rate for α-titanium.
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| Additional Information: | © 2000 Springer International Publishing AG. Original manuscript submitted: June 22, 1999. Final manuscript received: October 23, 1999. The second and third authors gratefully acknowledge support from the Office of Naval Research (Grant N0014-95-1-0453) and the National Science Foundation (Grant CMS-9204026). The fourth author would like to thank J. K. Knowles and the Caltech Faculty for their hospitality during his visit to the California Institute of Technology, and the National Science Foundation (Grant MSS-9312858). | |||||||||
| Group: | GALCIT | |||||||||
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| Subject Keywords: | plastic work; heat; infrared detectors; dynamic; stored energy; cold work; high strain rates; Kolsky bar/SHPB | |||||||||
| Issue or Number: | 2 | |||||||||
| Record Number: | CaltechAUTHORS:20150226-165652488 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150226-165652488 | |||||||||
| Official Citation: | Hodowany, J., Ravichandran, G., Rosakis, A.J. et al. Partition of plastic work into heat and stored energy in metals. Experimental Mechanics 40, 113–123 (2000). https://doi.org/10.1007/BF02325036 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 55288 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Cheryl Gause | |||||||||
| Deposited On: | 03 Mar 2015 00:35 | |||||||||
| Last Modified: | 09 Mar 2020 13:19 |
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