Non-Contact Guided Waves Tomographic Imaging of Plate-Like Structures Using a Probabilistic Algorithm

被引：20
|
作者：
Albiruni, Farabirazy [1 ]
Cho, Younho [1 ]
Lee, Joon-Hyun [2 ]
Ahn, Bong-Young [3 ]
机构：
[1] Pusan Natl Univ, Sch Mech Engn, Pusan 607735, South Korea
[2] Korea Inst Energy Technol Evaluat & Planning, Seoul 135280, South Korea
[3] Korea Inst Stand & Sci, Taejon 305340, South Korea
来源：
MATERIALS TRANSACTIONS | 2012年 / 53卷 / 02期
关键词：
hybrid non-contact ultrasonic; guided wave tomography; plate-like structures; probabilistic algorithm; ULTRASONIC TOMOGRAPHY; TRANSDUCTION;
D O I：
10.2320/matertrans.I-M2011853
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A non-contact testing with laser generated ultrasonic transmitter and an air-coupled transducer is very attractive technique in guided wave inspection. It can be used for online inspection and structural health monitoring (SHM) where contact method with embedded sparse sensors can not be applied such as the case of high temperature application. In this paper, tomography based on probabilistic algorithm was employed in conjunction with the hybrid non-contact method. This present approach can be successfully used for detecting, locating and imaging multi-defect in plates. This algorithm is based on the use of signal difference coefficient of guided waves acquired for good and faulty conditions. The simplicity of this algorithm makes it suitable to be implemented to non-contact based online inspection scheme. [doi:10.2320/matertrans.I-M2011853]
引用
收藏
页码：330 / 336
页数：7
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