Dynamic crack mechanism model place in the designing of the buildings

The materials that we use always have some defects. Under static, cycling or dynamic load the as a function of crack size and environment can initiate fracture. mechanism depends on several factors, like material properties, type stress kind. traditional fracture mechanics theories suggest solutions to predict crack-grow are well known in case elastic-plastic behaviour also for brittle under different strain high cycle low fatigue load. These supported by test results. Several researchers evaluated methods determining toughness base tests toughness. paper brings results brick blast resistance Damage level was detected setup parameters. bricks were pre-cracked before test. show be guided pre-cracking decrease affected damage.