Pure Research into Hall (Crack Arrester) for Brittleness High Speed Destruction Stop
—The First Report Basic Experiment That Uses C.G.S. Method And Ultra High Speed Video Camera—

Abstract

Crack in structure can cause collapse of structure. So that preventive measure must be done to stop crack propagation. Stopping hole is one of the crack arrester which is a mechanism which stops crack propagation. Stopping hole can not stop high-speed propagating crack in all cases. So re-propagation condition of crack from stopping hole does not clear up. This study finds out re-propagation condition with high-speed crack propagation experiment. In the experiment, we observed fracture phenomenon at ultra high-speed using C.G.S.methods. We bring out influence between crack propagation and size of stopping hole, and behavior of stop and re-propagation of crack propagation.