圧電センサによる複合材構造の衝撃損傷モニタリング(J09-1 モニタリング,J09 知的材料・構造システム)

概要

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Impact force acting on composite structures is identified using the response of PZT piezoelectric sensors embedded in structures. The relation between force histories and PZT responses is first formulated based on the finite element method. By employing this formulation, an error vector indicating the force location is defined and used for the force location identification. Next, the identification of force history is performed with the modified least-squares method that imposes the penalty on the first derivative of the force history. The validity of the present method has been verified through the impact experiment of cantilevered or four-corner clamped CFRP laminated plates. The method and feasibility of impact damage monitoring based on the impact force identification are also discussed.
社団法人日本機械学会の論文
2004-09-04