ABSTRACT
Acoustic emission testing technology is a kind of dynamic non-destructive testing technology which can realize rapid detection of the overall structure of large size components. The acoustic emission testing of tank trucks is based on structural characteristics of the tank truck and acoustic emission sensors are placed in a specific location on the outer surface of the tank truck. Then, a load is applied to the tank truck. The elastic wave generated by the acoustic emission source is propagated to the surface of the tank material and received by the acoustic emission sensor through the coupling interface, thus causing the displacement vibration of the acoustic emission sensor surface. These sensors convert the mechanical vibration of the materials into electrical signals, which are then amplified and acoustic emission signals filtered. The acoustic emission signals generated by the defects are analyzed and studied by acoustic emission testing instruments. This is followed by deducing the location, state level, and development trend of the internal defect of the material or structure, and then safety status of the tested material or component evaluated.
