Fiber direction determination in composites by means of Schlieren photography

Nico F. Declercq; A. Teklu; M. A. Breazeale; Roger D. Hasse; Joris Degrieck; Oswald Leroy

doi:10.1117/12.612767

3 March 2005 Fiber direction determination in composites by means of Schlieren photography

Nico F. Declercq, A. Teklu, M. A. Breazeale, Roger D. Hasse, Joris Degrieck, Oswald Leroy

Proceedings Volume 5828, Acousto-Optics and Applications V; (2005) https://doi.org/10.1117/12.612767
Event: Acousto-Optics and Applications V, 2004, Gdansk, Poland

Abstract

After a short description of the Ultrasonic Polar Scan Technique for characterizing composites, the paper describes and experimental method, based on the combination of Schlieren photography and a wide bounded ultrasonic beam of frequency 10 MHz, used to detect the fiber direction in composites. Experiments are described on unidirectional and fabric fiber reinforced composites. This method is not based on Lamb wave phenomena, which can be complicated for interpretation by NDT engineers, but rather is based on relatively simple principles, i.e. inhomogeneity and symmetry of composites.

Citation Download Citation

Nico F. Declercq, A. Teklu, M. A. Breazeale, Roger D. Hasse, Joris Degrieck, and Oswald Leroy "Fiber direction determination in composites by means of Schlieren photography", Proc. SPIE 5828, Acousto-Optics and Applications V, (3 March 2005); https://doi.org/10.1117/12.612767

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