Chapter
Apr 26, 2012
Damage Detection Algorithms and Sensor Systems for Laminate Composite Beams
Authors: Pizhong Qiao [email protected]; and Integrated Smart Structures, Inc., 2601 Twin Creek Dr., Copley, OH 44321-1770, Wahyu Lestari [email protected], Mitali G. Shah, and Jialai Wang [email protected]Author Affiliations
Publication: Earth & Space 2006: Engineering, Construction, and Operations in Challenging Environment
Abstract
In this paper, the experimentally measured data of two sensor systems (i.e., a surface-bonded piezoelectric sensor system and a non-contact scanning laser vibrometer (SLV) system) are studied, and three dynamics-based damage detection algorithms are evaluated. The curvature mode shapes are selected as a parameter to locate damage due to its sensitivity. The piezoelectric sensors directly acquire the curvature mode shapes of the structures, while the SLV measures the displacement mode shapes. The beam specimens are made of E-glass/epoxy composites, and several different types of damages are introduced in the beams (i.e., delaminations, impact and saw cut damage). This study provides a thorough assessment of the two sensor systems to damage detection of laminated composite beams and verify the validity of dynamics-based damage detection methodology for locating the local defects in composite structures.
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© 2006 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Authors
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Pizhong Qiao [email protected]; and Integrated Smart Structures, Inc., 2601 Twin Creek Dr., Copley, OH 44321-1770
Associate Professor, Department of Civil Engineering, The University of Akron, Akron, OH 44325-3905.E-mail: [email protected]; and Integrated Smart Structures, Inc., 2601 Twin Creek Dr., Copley, OH 44321-1770
Research Scientist and Visiting Assistant Professor, Department of Civil Engineering, The University of Akron, Akron, OH 44325-3905.E-mail: [email protected]
Mitali G. Shah
Graduate Research Assistant, Department of Civil Engineering, The University of Akron, Akron, OH 44325-3905
Assistant Professor, Department of Civil Engineering, North Dakota State University, Fargo, ND 58105.E-mail: [email protected]
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