Cracks detection on glass object based on active thermography approach

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TitreCracks detection on glass object based on active thermography approach
Type de publicationConference Paper
Year of Publication2019
AuteursHerrmann T, Migniot C, Aubreton O
EditorCudel C, Bazeille S, Verrier N
Conference NameFOURTEENTH INTERNATIONAL CONFERENCE ON QUALITY CONTROL BY ARTIFICIAL VISION
PublisherUniv Haute Alsace; Mulhouse Alsace Agglomerat; Region Grand Est; IDS GmbH; Fac Sci Mulhouse
Conference Location1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
ISBN Number978-1-5106-3054-3
Mots-clésActive Thermography, cracks on glass, Machine Vision, NDT
Résumé

Thermal imaging is nowadays widely used in many industrial areas for non destructive analysis. This paper focuses on the detection by active thermography of cracks in a transparent and specular piece of glass. A continuous laser scans the target by creating a hot spot that is acquired by a thermal camera. A thermal map is computed by averaging of thermal measurements for all the positions of the hot spot on the target. Then edge filters are applied to highlight the cracks. Experimental results demonstrate the validity of the material damage estimation in a short processing time.

DOI10.1117/12.2520920