Thermomechanical Properties of Polymers at High Rates of Strain

A. Trojanowski , C. Ruiz , J. Harding

The dissipation of mechanical energy within a polymer in a relatively short timescale can cause softening of temperature dependant materials and at high strain-rates this effect is more pronounced. In the present study, tests have been performed on a bisphenol A epoxy resin, LY-564, at strain-rates of approximately 2500s-1 using a Split Hopkinson Pressure Bar in compression. Temperature measurement has been carried out using a fast response infra-red radiometer developed at Oxford which is able to measure the surface temperature rise of a material during high rate tests. The temperature data shows three distinct slopes. Significant rises in temperature of approximately 50°C have been recorded during high rate compression tests.

Domaines: Articles anciens

A. Trojanowski, C. Ruiz, J. Harding. Thermomechanical Properties of Polymers at High Rates of Strain. Journal de Physique IV Proceedings, 1997, 07 (C3), pp.C3-447-C3-452. ⟨10.1051/jp4:1997377⟩. ⟨jpa-00255534⟩