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局部振動による鋼材接合部の損傷評価に関する研究 Study on Damage Evaluation of Joint in Steel Member by using Local Vibration Excitation 山崎, 智之 山崎 智之 大島, 俊之 大西, 功基 三上, 修一 open access 社団法人 土木学会, 山崎智之, 大島俊之, 大西功基, 三上修一, 応用力学論文集, 5, 2002, 837-846. vibration characteristics local excitation method FEM genetic algorithms(GA) 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 vibration test by using mutilayer piezoelectric actuator is effective to damage detection of steel structural member. 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 released bolts as a model of damage, is examined. And effectiveness of that system is verified by comparing with the experimental results. application/pdf 社団法人 土木学会 2002-08 jpn journal article VoR https://kitami-it.repo.nii.ac.jp/records/6853 応用力学論文集 5 837 846 https://kitami-it.repo.nii.ac.jp/record/6853/files/4157.pdf application/pdf 6.8 MB 2016-11-22