Real-time observation of compressive fracture of porous material by 10-millisecond 4D X-ray microtomography

Abstract

Abstract We report on an application of 4D synchrotron radiation microtomography with a temporal resolution of 10 ms. Our device compresses a sample while rotating it at high speed, making it possible for the first time to capture the moment of a local fracture inside a porous composite material. It was visualized that the fracture was caused by local tensile shear stress, not local compressive stress.