Ultrasonic based method for damage identification in composite materials

被引：8
|
作者：
Ben, B. S. [2 ]
Ben, B. A. [3 ]
Ratnam, Ch. [3 ]
Yang, S. H. [1 ]
机构：
[1] Kyungpook Natl Univ, Sch Mech Engn, Taegu 702701, South Korea
[2] Kyungpook Natl Univ, Inst Mech Engn Technol, Taegu 702701, South Korea
[3] Andhra Univ, Dept Mech Engn AUCE, Visakhapatnam 530003, Andhra Pradesh, India
来源：
INTERNATIONAL JOURNAL OF MECHANICS AND MATERIALS IN DESIGN | 2012年 / 8卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
Lamb waves; Propagation parameters; Damage detection; Structural health monitoring; CARBON-FIBER COMPOSITES; LAMB WAVE-PROPAGATION; PLATES; SENSORS;
D O I：
10.1007/s10999-012-9196-4
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
We present an ultrasonic-based Lamb wave propagation method for identifying and measuring the damage location in a material as a basis for structural health monitoring (SHM). Lamb waves can propagate in a structure via mode conversion and reflection from the surfaces of the structure, and can lead to interference patterns as a resulting wave vector propagates along the structure. We determined the experimental and analytical effects of various parameters on the sensitivity of damage detection. A methodology is proposed for estimating and measuring the location of damage in test specimens. An experimental setup is used for generating A(o-) Lamb waves by calibrating ultrasonic pulse generation for optimal values of parameters. Materials with different damage levels are tested in their undamaged and damaged conditions, and the effects of the parameters on the generated waves in test specimens are observed experimentally.
引用
收藏
页码：297 / 309
页数：13
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