Non-destructive testing for composite plate and shell with rubber liner using stress wave technique

Composite plate and shell with rubber liner can simulate filament wound pressure vessels of the aircraft. The non-destructive testing for composite material component by using the stress wave technique was given in this paper. Using this method, defects between liner and winding layers as well as between liner layers were inspected, the amplitude-frequency curves of the damaged regions were drawn, and the distribution of the defective regions between rubber liners was determined successfully. A proportionally reduced cylindrical case of a certain type of the rocket motor was practically inspected and a satisfactory result was obtained.