A New Damage Detecting Method by Mechanical Impedance Measurements

概要

論文の詳細を見る
A new nondestructive test method using the mechanical impedance was developed for nondestructively detecting damages, such as a crack, flaw, etc. in the structural member. This method consists of comparing mechanical impedance measurements of a sound structure before use with those of the same structure in service. In order to verify the utility of the method, bending vibration tests were carried out on a clamped rectangular steel plate model with two parallel stiffeners, measuring its mechanical impedance in the course of cutting away one of the stiffeners gradually, which meant to simulate the growth of a crack in the root of the stiffener. Basic knowledges for judging the existence, size and location of a damage could be obtained from the model tests and the hardware as well as the software for a damage detecting equipment could be designed, based on the experience of the tests.
一般社団法人日本機械学会の論文