Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications
Online ISSN : 2188-4749
Print ISSN : 2188-4730
第40回ISCIE「確率システム理論と応用」国際シンポジウム(2008年11月, 京都)
Detection of Cracks in a Concrete Pillar Connected with a Concrete Hexahedron Using an Acceleration Pickup
Hiroshi FujimotoMasayuki OkamotoShogo Tanaka
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2009 年 2009 巻 p. 188-191

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This fundamental research is concerned with the crack detection of a concrete pillar combined with a concrete hexahedron, which is a model of the base pile of bridge pier. Stationary waves are generated in the pillar and the hexahedron by hitting the hexahedron with a hammer. An acceleration pickup on the hexahedron observes the stationary waves generated inside the concrete pillar through the hexahedron. The proposed method measures not only the length of the pillar but also the depth of the crack in the pillar by modeling the sensor output as an output of a linear dynamic system with unknown parameters and applying a maximum likelihood method.
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© 2009 ISCIE Symposium on Stochastic Systems Theory and Its Applications
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