Abstract
This paper deals with the local excitation method of vibration test by using mutilayer piezoelectric actuators as input device to specimen for the purpose of detecting comparatively small damage of steel structural member, and measures change of an vibration characteristics. It is shown that the vibrationtest by using mutilayer piezoelectrica ctuator is effective to damage detection of steel structuralm ember. After releasing bolt supports of a steel structural member, the vibration test is carried out, and the validity of damage detection is examined. The analytical software system using genetic algorithm (GA) to evaluate the location and level of releasedb olts as a model of damage, is examined. And effectiveness of that system is verified by comparing with the experimental results.
