Experimental Investigation Using Acoustic Emission Technique for Quasi-Static Cracks in Steel Pipes Assessment

Acoustic emission (AE) is a phenomenon where transient waves of stress are generated during deformed material, which applied to detect and monitor the cracks propagation. The majority related literature studied simulated wave sources, were utilized for single point pipe have been strictly controlled by temporal characteristics. Therefore, realistic sources do not known characteristics in present work. source quasi-static crack propagation under three-point bending. distortions AE signals experimentally evaluated testing using sources. A variety intensities on steel determine effect type intensity time frequency domains. Machines mounted locate reconstitute features domain It concluded that energy was sensitive size concerning transition plane-stress plane-strain. potential technique identifying nature, location demonstrated.