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Journal of Intelligent Material Systems and Structures
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Identification of Delaminations in Composite Laminates

Ning Hu

Department of Engineering Mechanics, Chongqing University, P.R. China, 400011, Department of Aeronautics and Space Engineering, Tohoku University 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai-shi 980-8579, Japan, hu{at}ssl.mech.tohoku.ac.jp

Hisao Fukunaga

Department of Aeronautics and Space Engineering, Tohoku University 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai-shi 980-8579, Japan

Masaki Kameyama

Department of Aeronautics and Space Engineering, Tohoku University 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai-shi 980-8579, Japan

In this article, an identification technique for detecting delaminations in composite laminates is proposed, which uses the distributed piezoelectric actuators/sensors and the conception of transfer function. In this technique, the configuration of arrays of actuators/sensors is carefully designed to enhance the efficiency of the identification algorithm based on the transfer function. A beam example is employed to study the characteristics and effectiveness of the present identification approach, numerically. The experimental data are simulated from a FEM technique of higher-order plate theory for adaptive composite laminates, which is extended for delaminated laminates by implementing the displacement continuity conditions at the delamination front.

Key Words: composite laminates • smart materials • delamination • identification • FRF

This version was published on September 1, 2006

Journal of Intelligent Material Systems and Structures, Vol. 17, No. 8-9, 671-683 (2006)
DOI: 10.1177/1045389X06055816
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