Defect detection in CFRP by infrared thermography with CO2 Laser excitation compared to conventional lock-in infrared thermography |
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Affiliation: | 1. Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy |
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Abstract: | This paper presents a NDT 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 μm. 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. |
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Keywords: | A Carbon fiber B Defects D Non-destructive testing |
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