Uninterrupted in-situ compression of automotive expanded polypropylene, imaged via synchrotron X-ray computed tomography

Abstract

Synchrotron radiation at the ESRF was used to scan an uninterrupted uniaxial compression test of Expanded Polypropylene samples sourced from two automotive component suppliers. The samples, nominally 80 kg.m-3 were compressed at a constant quasi-static rate of 10 μm.s-1, avoiding an interrupted, stop-start approach that has previously been adopted for scanning cellular solids.