Investigation of the dynamic effects of partial sensor debonding in smart composite laminates

Asif Khan; Heung Soo Kim

doi:10.1117/12.2218063

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16 April 2016 Investigation of the dynamic effects of partial sensor debonding in smart composite laminates

Asif Khan, Heung Soo Kim

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Proceedings Volume 9802, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2016; 98021I (2016) https://doi.org/10.1117/12.2218063
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

Dynamic characteristics of smart composite laminate with partially debonded piezoelectric sensor are investigated. Improved layerwise theory with Heaviside’s unit step function is used to model the discontinuous displacement field with jumps owing to the in-plane slipping and out-of-plane opening at the debonded interface. Higher order electric potential field is employed to describe the potential variation through the thickness of piezoelectric patches. Finite element method and extended Hamilton’s principle are used to derive the governing equation of motion. The governing equation is solved in time domain using Newmark time integration algorithm. The developed model is numerically implemented on a laminated composite plate with surface bonded piezoelectric actuator and partially debonded sensor. The sensing capability is evaluated in the presence of partial inner and edge debonding in the piezoelectric sensor.

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Asif Khan and Heung Soo Kim "Investigation of the dynamic effects of partial sensor debonding in smart composite laminates", Proc. SPIE 9802, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2016, 98021I (16 April 2016); https://doi.org/10.1117/12.2218063

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