| Numéro |
J. Phys. IV France
Volume 110, September 2003
|
|
|---|---|---|
| Page(s) | 159 - 164 | |
| DOI | https://doi.org/10.1051/jp4:20020687 | |
J. Phys. IV France 110 (2003) 159
DOI: 10.1051/jp4:20020687
Thermomechanical properties of polycarbonate under dynamic loading
V. Lerch1, G. Gary2 and P. Hervé11 Laboratoire d'Énergétique et d'Économie en Énergie, Université Paris X, 1 chemin Desvallières, 92410 Ville-d'Avray, France
2 Laboratoire de Mécanique des Solides, École Polytechnique, route de Saclay, 91128 Palaiseau, France
Abstract
In the present study, dynamic compression tests have been performed on polycarbonate (PC) specimen for strain rates in the
range of 500 to 2000s
-1 and on aluminum for a strain rate around 1300s
-1 using a Split Hopkinson Pressure Bar (SHPB). Temperature measurement has been carried out using a fast response infrared
optical pyrometer which is able to measure the surface temperature rise of a specimen during the tests. The temperature data
shows that the mechanical work is not completely converted into heat. It implies the existence of a stored energy within the
material and possibly a subsequent delay for the conversion of mechanical work into heat.
© EDP Sciences 2003