Sensory Composite Beams for Delamination Detection in Thermal Environments
Abstract
The feasibility of detection of delaminations in thermal composite structures using piezoelectric layers or patches embedded within or bonded on the laminate is investigated. Characteristic damage signatures are sought, associated with changes in the voltage output of the sensors as a result of thermally-induced strains in the laminate. Analytical solutions are developed within the limits of linear thermopiezoelasticity and laminate theory and the resultant voltage across the piezoelectric sensors is calculated. Numerical examples are presented for cantilever beams subjected to temperature variations and the feasibility of the proposed method is illustrated.
Recommended Citation
V. Birman et al., "Sensory Composite Beams for Delamination Detection in Thermal Environments," American Society of Mechanical Engineers, Aerospace Division (Publication) AD, American Society of Mechanical Engineers (ASME), Jan 1994.
Meeting Name
American Society of Mechanical Engineers, Aerospace Division (Publication) AD (1994, Chicago, IL, USA)
Department(s)
Mechanical and Aerospace Engineering
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1994 American Society of Mechanical Engineers (ASME), All rights reserved.
Publication Date
01 Jan 1994
