Composite materials which are widely used in the aero space industry remain the most successful objects for the application of thermal/infrared NDT. On the academic level, NDT of these materials represents the scientific field where algorithms for solving inverse heat conduction problems are being explored. From the practical point of view, it can be stated that both the commercially-available IR imagers and the modeling/processing software are matured enough to allow designing and practical implementing of TNDT devices intended for non-invasive inspection of composite materials. The advantage of IR thermographic procedures is that they can be used for both the determination of thermal properties and the detection and characterization of hidden defects in a single experimental test. Development of the corresponding algorithms is related to modeling, i.e. solving direct heat conduction problems (ThermoCalc-2D, ThermoCalc-6L and ThermoCalc-30L software). Characterization of defects by their surface 'footprints' is one of the most fascinating research areas in TNDT. Defect lateral dimensions can be evaluated relatively easily by direct measurement, while determining defect depth and thickness requires solving inverse heat conduction problems. A rather simple approach to defect characterization is implemented in the ThermoFit Pro software.
Infrared thermographic nondestructive testing of composite materials. Determining thermal properties, detecting and characterizing hidden defects
Zerstörungsfreie infrarotthermographische Prüfung von Verbundwerkstoff. Bestimmung thermischer Eigenschaften, Nachweis und Charakterisierung versteckter Fehler
2010
6 Seiten, 6 Bilder, 1 Tabelle, 3 Quellen
(nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
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