Application of Impact Elastic Wave Method in Nondestructive Testing Technology

Abstract This paper summarizes the research status of nondestructive testing technology building structures, focuses on technical principles and characteristics first wave phase inversion method impact elastic method, this basis, detector based reversal were used to conduct experimental cracks, materials, defects thickness test block. The results show that has low requirements for environment, are affected by water, dust, steel reinforcement signal attenuation inside crack, which have a tendency be shallow compared with actual value. defect location, size other consistent situation, verifies good reliability wave.