The influence of stress wave on the impact fracture strength of cracked member

Impact fracture strength is influenced by the loading direction and the length of a specimen subjected to an impact force. Such characteristic properties of the impact strength is described initially by introducing some examples. Based on the characteristic properties, a problem associated with the evaluation of the impact strength using the dynamic stress intensity factor of a cracked member is highlighted. It implies that further investigation is necessary to evaluate the integrity of cracked structural members subjected to impact loads.