Defect detection in CFRP by infrared thermography with CO2 Laser excitation compared to conventional lock-in infrared thermography

被引:27
|
作者
Keo, Sam Ang [1 ,2 ]
Brachelet, Franck [1 ,2 ]
Breaban, Florin [1 ,3 ]
Defer, Didier [1 ,2 ]
机构
[1] PRES Lille Nord France, Lab Genie Civil & GeoEnvironm, Lille, France
[2] Fac Sci Appl, F-62400 Bethune, France
[3] Inst Univ Technol, F-62400 Bethune, France
关键词
Carbon fiber; Defects; Non-destructive testing; CO2; Laser; CONCRETE;
D O I
10.1016/j.compositesb.2014.09.018
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper presents a NOT by a CO2 Laser infrared thermography applied to defect detection in CFRP. The CO2 Laser is an infrared laser with the wavelength of 10.6 mu m. This excitation has a controllable heating beam by a geometric relation D = 0.01575.d, which allows to heat the samples at a specific position (placed at the distance "d") and area (of a diameter "D"). The PPT interpretation principle was used to reduce the non-uniformity's effect of the excitation causing inhomogeneous heat. The test with this excitation is much faster than the tests with conventional lock-in thermography method. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1 / 5
页数:5
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