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>The search for 'defects' by non-invasive techniques: development and application of pulsed-transmissive and reflective thermography in fiberglass material
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The search for 'defects' by non-invasive techniques: development and application of pulsed-transmissive and reflective thermography in fiberglass material
The application of thermography to the study of composite materials is a fact that is increasingly applied in different Non-Destructive Testing Laboratories (NDT). The application of heat pulses controlled by methods of transmission and reflection on the material and the study of the evolution of these pulses of heat over time, as well as the correct use of the thermography equipment as well as the conditions of contour, can show details that at first sight we are not able to perceive, for it is necessary to have a good test methodology. In this case thermographic tests have been carried out on a glass fiber radome (aeronautical material) in order to determine possible defects or indications such as cracks, delaminations, air pockets, etc. Following the principle of good practices to reduce as much as possible the number of tests to be applied to the inspection of an object, it is necessary to carry out a previous visual inspection for the possible detection of delaminations and detachments in an unpainted piece. The inspection by pulse-thermography shows a good behavior for the detection of breaks in the core in a piece painted by one or two faces.
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