Infrared lock - in thermography for surface defect imaging in metals for industrial diagnosis

Autor: Y. Fedala, C. Boué, Jean Paul Roger, M. Streza, G. Tessier
Rok vydání: 2014
Předmět:
Zdroj: Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography.
Popis: Optical lock-in thermography is exploited for qualitative assessment of surface cracks in metallic samples. In order to identify and localize a surface defect, a special image processing of the recorded IR amplitude sequence is proposed. The obtained results demonstrate the potentiality of active lock-in thermography as a contactless measurement tool for localization of breaking cracks located into specific regions difficult to reach, and as a possible alternative to penetrant inspection in industrial processes.
Databáze: OpenAIRE