Delamination monitoring by the local velocimetry based on the spatio-temporal gradient analysis

被引：0

作者：

Teramoto, K ^{[1
]}

Tsuruta, K ^{[1
]}

机构：

[1] Saga Univ, Dept Mech Engn, Saga 840, Japan

来源：

SICE 2003 ANNUAL CONFERENCE, VOLS 1-3 | 2003年

关键词：

lamb wave; non-destructive evaluation; spatio-temporal gradient analysis; array signal processing;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a novel method of local phase velocimetry based on the spatio-temporal gradient analysis is proposed. The proposed method has an ability to measure the local phase velocity of the zeroth order anti-symmetric Lamb wave field through the linearity among following four components: a vertical displacement, its vertical velocity, and a pair of out-of-plane shearing strains of the surface. In this study, the computational process in the Lamb wave field near the defects is discussed and their physical meanings are investigated through FDTD-simulations.

引用

页码：1165 / 1168

页数：4

共 11 条

[1]

Abramowitz M., 1965, HDB MATH FUNCTIONS, P358

[2] Guided waves energy velocity in absorbing and non-absorbing plates [J].