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**Harvard**

Diligent, O., Grahn, T., Boström, A., Cawley, P. och Lowe, M. (2002) *The low-frequency reflection and scattering of the S0 Lamb mode from a circular through-thickness hole in a plate: Finite Element, analytical and experimental studies*.

** BibTeX **

@article{

Diligent2002,

author={Diligent, O and Grahn, Thomas and Boström, Anders and Cawley, Peter and Lowe, M J S},

title={The low-frequency reflection and scattering of the S0 Lamb mode from a circular through-thickness hole in a plate: Finite Element, analytical and experimental studies},

journal={Journal of the Acoustical Society of America},

issn={0001-4966},

volume={112},

issue={6},

pages={2589-2601},

abstract={A study of the interaction of the S0 Lamb wave with a circular through-thickness hole in a plate is presented. The study is limited to the nondispersive frequency range of this wave, in which the distributions of stress and displacement are simple. This allows a Finite Element analysis to be undertaken using a two-dimensional membrane discretization. Predictions of the direct reflection of the S0 mode and the lateral scattering of the SH0 mode are made for a range of diameters of the hole. At the same time, an analytical solution based on modal superposition is developed, and this is also used to predict the reflection and scattering coefficients. Both sets of predictions are validated by experimental measurements. It is found that the trends of the reflection coefficients for different hole diameters, frequencies and distances from the hole satisfy a simple normalization. On a detailed scale, the functions exhibit undulations which are shown to result from the interference of the direct reflection with secondary reflections which arrive slightly later.},

year={2002},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 176967

A1 Diligent, O

A1 Grahn, Thomas

A1 Boström, Anders

A1 Cawley, Peter

A1 Lowe, M J S

T1 The low-frequency reflection and scattering of the S0 Lamb mode from a circular through-thickness hole in a plate: Finite Element, analytical and experimental studies

YR 2002

JF Journal of the Acoustical Society of America

SN 0001-4966

VO 112

IS 6

SP 2589

OP 2601

AB A study of the interaction of the S0 Lamb wave with a circular through-thickness hole in a plate is presented. The study is limited to the nondispersive frequency range of this wave, in which the distributions of stress and displacement are simple. This allows a Finite Element analysis to be undertaken using a two-dimensional membrane discretization. Predictions of the direct reflection of the S0 mode and the lateral scattering of the SH0 mode are made for a range of diameters of the hole. At the same time, an analytical solution based on modal superposition is developed, and this is also used to predict the reflection and scattering coefficients. Both sets of predictions are validated by experimental measurements. It is found that the trends of the reflection coefficients for different hole diameters, frequencies and distances from the hole satisfy a simple normalization. On a detailed scale, the functions exhibit undulations which are shown to result from the interference of the direct reflection with secondary reflections which arrive slightly later.

LA eng

DO 10.1121/1.1512292

LK http://dx.doi.org/10.1121/1.1512292

OL 30