Size Estimation of Interface Crack by Interference Effect

Kitahara, M.; Yin, J.-H.

doi:10.1007/978-1-4615-1987-4_16

M. Kitahara³ &
J.-H. Yin⁴

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Abstract

It is of primary importance to estimate the crack size on the interface of two solids for evaluating the integrity of jointed interfaces. In this paper, the scattering problem of elastic waves is formulated for the interface crack of layered materials in water. Green’s function for the water/solid/solid material is constructed and utilized to represent the scattered pressure field in water caused by the crack opening displacement in the interface of two solids. Introduction of the far-field approximation for the scattered pressure field and then the high frequency approximation for the crack opening displacement leads to a simple equation which is related to the crack size, the wave velocity in water, the angles of incident wave and observation point, and the period of scattering amplitude in the frequency range. The size of interface crack is estimated by measuring the periodicity of the scattering amplitude for fixed transducer’s angles in water. Examples are shown for pulse-echo configurations.

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Authors and Affiliations

Faculty of Marine Science and Technology, Tokai University, Shimizu, Shizuoka, 424, Japan
M. Kitahara
Institute of Acoustics, Nanjing University, Nanjing, 210008, P. R. China
J.-H. Yin

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M. Kitahara
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J.-H. Yin
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Editors and Affiliations

Center for NDE, Ames Laboratory (USDOE) and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, Iowa, USA
Donald O. Thompson
Center for NDE and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, Iowa, USA
Dale E. Chimenti

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Kitahara, M., Yin, JH. (1995). Size Estimation of Interface Crack by Interference Effect. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-1987-4_16

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DOI: https://doi.org/10.1007/978-1-4615-1987-4_16
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-5819-0
Online ISBN: 978-1-4615-1987-4
eBook Packages: Springer Book Archive

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