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Damage detection in composite laminates using …

Acoustics 08 Paris Damage detection in composite laminates using coin-tap method Kim Korea Aerospace Research Institute, 45 Eoeun-Dong, Youseong-Gu, 305-333 Daejeon, Republic of Korea 405. Acoustics 08 Paris The coin-tap test has the ability to indicate Damage in a structural element due to a localized change of stiffness. The change in vibration signature may be detected by ear or more precisely by measurement of the dynamic contact force. In this paper, a coin-tap test method for discriminating between measurements made on sound and delaminated structures is present. It has been shown that the characteristics of contact force history during a tap are changed by the presence of defect beneath the surface of the structure. For structurally radiated noise, the sound field is directly coupled to the structural motion.

Damage detection in composite laminates using coin-tap method S.J. Kim Korea Aerospace Research Institute, 45 Eoeun-Dong, Youseong-Gu, 305-333 Daejeon,

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