Detection of very thin defects in CFRP by the lock-in thermography method

• Autorzy: Świderski W.

Identyfikatory

DOI

10.5604/12314005.1213562

• Języki publikacji: EN

Abstrakty

EN

Quick development of constructional composite materials application is caused by their excellent mechanical and strength-related properties, combined with a low specific weight. One of the basic groups of reinforcement materials in composites are carbon fibres discovered back in 19th century. 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 reinfused fibres, binder cracks and loss of fibres adhesiveness to binder. Diagnostic methods, which are effective with relation to metals became little effective when used in detection of defects in composite materials. This caused greater interest of diagnostic techniques with using infrared thermography. Lock-in thermography is one of NDT 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 thermal source synchronized with the IR image acquisition camera. It was prepared sample of multilayer structure carbon composite with deliberately introduced defects for comparative purposes. Very thin defects of different sizes and shapes made of Teflon or copper having a thickness of 0.1 mm were searches. The results are reported in the paper.

Słowa kluczowe

EN

non-destructive testing; composite material; IR thermography

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 1
• Strony: 385--390
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Świderski W.

• Military Institute of Armament Technology Wyszynskiego Street 7, 05-220 Zielonka, Poland tel.:[phone], fax: [phone]

Bibliografia

• [1] Erika 3.11 Option Lock-in, User’s Manual, FSI Flir Systems, 1998.
• [2] Krapez, J. C., Gardette, G., Balageas, D., Lock-in IR thermography: advantages and problems of some approaches, Proc. 3rd Int. Workshop on Advanced IR Techn. and Appl., pp. 219-237, 1995.
• [3] Kuo, P. K., Feng, Z. J., Ahmed, T. et al., Parallel thermal wave imaging using a vector lock-in video technique, Photoacustic and photothermal phenomena ed. P. Hess and J. Pelzl, Heidelberg: Springer-Verlag, pp. 415-418, 1987.
• [4] Leda, H., Kompozyty polimerowe z włóknami ciągłymi, Wydawnictwo Politechniki Poznańskiej, 2000.
• [5] Leda, H., Szklane czy węglowe włókna w kompozytach polimerowych; KOMPOZYTY (COMPOSITES) R. 3, Nr 7, s. 209-215, 2003.
• [6] Offermann, S., Bissieux, C., Beaudoin, J. L., Statistical treatment applied to infrared thermoelastic analysis of applied and residual mechanical stresses, Revue Generale de Thermique, Vol. 37, No 8, pp. 43-48, 1998.
• [7] Rantala, J., Wu, D., Busse, G., Amplitude modualted lock-in vibrothermography for NDE of polymers and composites, Research in Nondestructive Evaluation, No. 7, pp. 215-228, 1996.
• [8] Świderski, W., Lock-in Thermography to rapid evaluation of destruction area in composite materials used in military applications, SPIE vol. 5132, pp. 506-517, 2003.
• [9] Wojtku, F., Sołcew J. P., Materiały specjalnego przeznaczenia, Politechnika Radomska, 2001.
• [10] Wu, D., Busse, G., Lock-in thermography for nondestructive evaluation of materials, Revue Generale de Thermique, Vol. 37, No 8, pp. 693-703, 1998.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.