Damage detection and mitigation of composite structures using smart materials

Abu S. Islam; Kevin C. Craig

doi:10.1117/12.152830

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8 September 1993 Damage detection and mitigation of composite structures using smart materials

Abu S. Islam, Kevin C. Craig

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Proceedings Volume 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems; (1993) https://doi.org/10.1117/12.152830
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

This paper reports the results of an ongoing experimental program for damage assessment and mitigation of composite structures using smart materials. One consequence of all damage to a composite structure is a change in its stiffness. This change in stiffness is measured by modal analysis which can be carried out using piezoelectric films as both sensor and actuator on the structure member. It is shown that the presence of damage can be detected by the change in natural frequencies and the location of the damage can be detected from the ratio of changes in frequencies between two successive modes.

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Abu S. Islam and Kevin C. Craig "Damage detection and mitigation of composite structures using smart materials", Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); https://doi.org/10.1117/12.152830

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