Lock-in thermography for rapid evaluation of the destruction area in composite materials used in military applications

Waldemar Swiderski

doi:10.1117/12.515159

1 May 2003 Lock-in thermography to rapid evaluation of destruction area in composite materials used in military applications

Waldemar Swiderski

Author Affiliations +

Proceedings Volume 5132, Sixth International Conference on Quality Control by Artificial Vision; (2003) https://doi.org/10.1117/12.515159
Event: Quality Control by Artificial Vision, 2003, Gatlinburg, TE, United States

Abstract

Quick development of constructional composite materials application is caused by their good durability properties at low specific weight and resistance against corrosion. Requirements for prolonged service time generate the need for application of more efficient methods and diagnosis technics. The main reason of defects in structures of composite materials is the variability of working charges in constructions during the process of using. Existed defects are complicated because of the effects like loss of continuity of reinforced fibres, binder cracks and loss of fibres adhesiveness to binders. Generally defects in composite material are usually more complicated than in metals. Diagnosis technics checked in metal constructions are little of use at composite construction research. At the present time an infrared diagnostics becomes more popular. In the paper we present using of lock-in thermography for detection of destruction area in composite materials. Lock-in thermography is one of NDE methods providing phase images of thermal waves in a sample leading to receiving a distribution of internal defects and allowing for thermal properties evaluation. We used lock-in thermography in connection with modulated heat source synchronized with the IR image acquisition camera. We used a special lamp as the modulated heat source synchronized with the IR image acquisition camera. We used a special lamp as the modulated heat source. In this paper I present both simulated and measured results.

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Waldemar Swiderski "Lock-in thermography to rapid evaluation of destruction area in composite materials used in military applications", Proc. SPIE 5132, Sixth International Conference on Quality Control by Artificial Vision, (1 May 2003); https://doi.org/10.1117/12.515159

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