Two dimensional model for subharmonic generation at closed cracks with damped double nodes

Kazushi Yamanakan; Yohei Shintaku; Yoshikazu Ohara

doi:10.1063/1.4749326

Two dimensional model for subharmonic generation at closed cracks with damped double nodes

Kazushi Yamanakan, Yohei Shintaku, Yoshikazu Ohara

ENG - Materials Processing

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

We describe the first two dimensional (2D) model to reproduce subharmonic generation at closed cracks using damped double nodes (DDN). Numerical simulation using finite difference time domain (FDTD) method was performed using DDN. We verify transparency of low amplitude wave to closed cracks and typical stress divergence at crack tip produced by large amplitude wave.

Original language	English
Title of host publication	Nonlinear Acoustics
Subtitle of host publication	State-of-the-Art and Perspectives, ISNA 2012 - 19th International Symposium on Nonlinear Acoustics
Pages	179-182
Number of pages	4
Edition	1
DOIs	https://doi.org/10.1063/1.4749326
Publication status	Published - 2012 May

Publication series

Name	AIP Conference Proceedings
Number	1
Volume	1474
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Keywords

Damping
FDTD
Imaging
Nodes
Phased array
Subharmonic waves

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10.1063/1.4749326

Cite this

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abstract = "We describe the first two dimensional (2D) model to reproduce subharmonic generation at closed cracks using damped double nodes (DDN). Numerical simulation using finite difference time domain (FDTD) method was performed using DDN. We verify transparency of low amplitude wave to closed cracks and typical stress divergence at crack tip produced by large amplitude wave.",

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Two dimensional model for subharmonic generation at closed cracks with damped double nodes. / Yamanakan, Kazushi; Shintaku, Yohei; Ohara, Yoshikazu.
Nonlinear Acoustics: State-of-the-Art and Perspectives, ISNA 2012 - 19th International Symposium on Nonlinear Acoustics. 1. ed. 2012. p. 179-182 (AIP Conference Proceedings; Vol. 1474, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Shintaku, Yohei

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N2 - We describe the first two dimensional (2D) model to reproduce subharmonic generation at closed cracks using damped double nodes (DDN). Numerical simulation using finite difference time domain (FDTD) method was performed using DDN. We verify transparency of low amplitude wave to closed cracks and typical stress divergence at crack tip produced by large amplitude wave.

AB - We describe the first two dimensional (2D) model to reproduce subharmonic generation at closed cracks using damped double nodes (DDN). Numerical simulation using finite difference time domain (FDTD) method was performed using DDN. We verify transparency of low amplitude wave to closed cracks and typical stress divergence at crack tip produced by large amplitude wave.

KW - Damping

KW - FDTD

KW - Imaging

KW - Nodes

KW - Phased array

KW - Subharmonic waves

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ER -

Two dimensional model for subharmonic generation at closed cracks with damped double nodes

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