Application of Impact Elastic Wave Method in Nondestructive Testing Technology

Abstract

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