Abstract
Recently, maintenance problems of the existing RC structure have been increasing, thus to evaluate durability and predict deterioration of them come into important. In this study, the rotary hammering test that could improve inspection accuracy and efficiency of conventional hammering test is introduced, and examined diagnostic capability by means of the acoustic analysis based on finite element method. From analytical results of the rotary hammering test for concrete specimen, it is figure out the difference of sound pressure shapes between wholesome model and defect model. In addition, it is confirmed that utility of the rotary hammering test, and verifies the fact that this test method is not influenced by individual performance.
