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Experimental Study on GFRP Surface Cracks Detection Using Truncated-Correlation Photothermal Coherence Tomography.
- Source :
-
International Journal of Thermophysics . Apr2018, Vol. 39 Issue 4, p1-1. 1p. - Publication Year :
- 2018
-
Abstract
- In this paper, truncated-correlation photothermal coherence tomography (TC-PCT) was used as a nondestructive inspection technique to evaluate glass-fiber reinforced polymer (GFRP) composite surface cracks. Chirped-pulsed signal that combines linear frequency modulation and pulse excitation was proposed as an excitation signal to detect GFRP composite surface cracks. The basic principle of TC-PCT and extraction algorithm of the thermal wave signal feature was described. The comparison experiments between lock-in thermography, thermal wave radar imaging and chirped-pulsed photothermal radar for detecting GFRP artificial surface cracks were carried out. Experimental results illustrated that chirped-pulsed photothermal radar has the merits of high signal-to-noise ratio in detecting GFRP composite surface cracks. TC-PCT as a depth-resolved photothermal imaging modality was employed to enable three-dimensional visualization of GFRP composite surface cracks. The results showed that TC-PCT can effectively evaluate the cracks depth of GFRP composite. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0195928X
- Volume :
- 39
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- International Journal of Thermophysics
- Publication Type :
- Academic Journal
- Accession number :
- 128701970
- Full Text :
- https://doi.org/10.1007/s10765-018-2370-7