Defect depth measurement of carbon fiber reinforced polymers by thermography

Terry Yuan-Fang Chen; Jian-Lun Chen

doi:10.1117/12.2216479

26 January 2016 Defect depth measurement of carbon fiber reinforced polymers by thermography

Terry Yuan-Fang Chen, Jian-Lun Chen

Proceedings Volume 9903, Seventh International Symposium on Precision Mechanical Measurements; 990304 (2016) https://doi.org/10.1117/12.2216479
Event: Seventh International Symposium on Precision Mechanical Measurements, 2015, Xia'men, China

Abstract

Carbon fiber reinforced polymers has been widely used in all kind of the industries. However the internal defects can result in the change of material or mechanical properties, and cause safety problem. In this study, step-heating thermography is employed to measure the time series temperature distribution of composite plate. The principle of heat conduction in a flat plate with defect inside is introduced. A temperature separation criterion to determine the depth of defect inside the specimen is obtained experimentally. Applying this criterion to CFRP specimens with embedded defects, the depth of embedded defect in CFRP can be determined quite well from the time series thermograms obtained experimentally.

Citation Download Citation

Terry Yuan-Fang Chen and Jian-Lun Chen "Defect depth measurement of carbon fiber reinforced polymers by thermography ", Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 990304 (26 January 2016); https://doi.org/10.1117/12.2216479

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