Modal Analysis of Stress Wave Test for Flaw Detection in Concrete

콘크리트의 결함평가를 위한 탄성파시험의 모우드해석

In the impact echo method, a stress pulse is introduced into an object at on accessible surface by a transmitter. The pulse propagates into the test object and is reflected by flaws or interfaces. In this paper, void and crack locations of concrete specimens were detected using impact echo method. In their modal identification procedures, the double least squares solution for Ibrahim Time Domain technique was used.