Acoustic emission generated by composite pressure vessels, in theory, should be relatively straight forward to analyze and to draw conclusions from if damage is present and/or damage is progressing by measuring the amount of acoustic emission generated and/or the rate at which acoustic emission is detected. A high amplitude acoustic emission hit from the same source to sensor distance should, in theory, be from a more severe source than a lower amplitude hit. Similarly, a

Introduction Acoustic emission testing (AET) is a well-established non-destructive testing (NDT) technology commonly used to detect fatigue cracks in steel and composite pressure vessels, above ground atmospheric storage tanks, and steel and concrete bridges. Acoustic emission testing is characterized as a passive NDT technique since it does not insert some type of energy into the structure to interrogate for material anomalies. The structure must be stressed to a level tha

Spherical pressure vessels are manufactured in accordance with the American Society for Mechanical Engineering Boiler and Pressure Vessel...