NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
53rd NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
Session ID : 2D5
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OS20-1
Identification of Multiple Cracks by Passive Electric Potential CT Method
*Daiki Shiozawashiro KuboTakahide SakagamiMasaaki Takagi
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Abstract
This report describes the feasibility of passive electric potential CT (computed tomography) method which does not require electric current application for detection of crack. An inverse method based on the least residual method and the information theoretical criterion were applied to the crack identification from electric potential distribution on piezoelectric material. It was found that the location, size and number of the cracks can be identified by the passive electric potential CT method when the electric potential distribution includes measurement noise.
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© 2004 Committee for Mechanics and Structure,Science Council
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