Journal
APPLIED PHYSICS LETTERS
Volume 108, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4940378
Keywords
-
Categories
Ask authors/readers for more resources
The directly measured temperature change Delta T upon deformation (elastocaloric effect) of natural rubber was compared with indirect method, which is deduced from the Clausius-Clapeyron factor (partial derivative sigma/partial derivative T)(epsilon),where sigma is the stress and e is the strain. The factor (partial derivative sigma/partial derivative T)(epsilon) be measured by two different methods. One is to measure the stress vs. strain behavior at different static temperatures. It is found that the Delta T deduction is underestimated or even of opposite sign compared with the directly measured one. These behaviors are different from elastocaloric effect of shape memory alloys. An interpretation based on strain-induced crystallite is proposed. The other characterization is to measure the stress vs. temperature at constant strain. It results in a prediction, which is in good quantitative agreement with the directly measured one. The stress appears then to be a non-state variable, thus questioning the ergodicity of the material. (C) 2016 AIP Publishing LLC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available