Dynamic studies of angle-ply laminates including flexure-torsion coupling using laser holography

Takenori Maeda; Vijayan Baburaj; Tatsuzo Koga

doi:10.1117/12.248665

23 August 1996 Dynamic studies of angle-ply laminates including flexure-torsion coupling using laser holography

Takenori Maeda, Vijayan Baburaj, Tatsuzo Koga

Author Affiliations +

Proceedings Volume 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1996) https://doi.org/10.1117/12.248665
Event: Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 1996, Ancona, Italy

Abstract

Laser holographic interferometry has been applied to experimentally investigate the effect of flexure-torsion coupling stiffnesses on the vibrational characteristics. Test specimens are two special types of angle-ply laminates, which enables us to examine the influence by a flexure- torsion coupling term alone. The theoretical analysis by a finite element method is also conducted to support the experimental results. It is found that the effect of coupling stiffnesses on the natural frequencies is comparatively small. On the other hand, the mode shapes are strongly affected by the coupling terms depending both on the fiber orientation and on the aspect ratio of a cantilevered laminate.

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Takenori Maeda, Vijayan Baburaj, and Tatsuzo Koga "Dynamic studies of angle-ply laminates including flexure-torsion coupling using laser holography", Proc. SPIE 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (23 August 1996); https://doi.org/10.1117/12.248665

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