Study of disbond effects in a jointed composite structure under variable ambient temperatures

Sikdar, Shirsendu, Ostachowicz, Wieslaw, Kudela, Pawel and Fiborek, Piotr (2018) Study of disbond effects in a jointed composite structure under variable ambient temperatures. In: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018. Proceedings of SPIE - The International Society for Optical Engineering . SPIE, USA. ISBN 9781510616929

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Jointed composite structures (JCSs) are often used in the marine, automotive and civil engineering industries. In JCS, thin carbon-fiber-reinforced composite laminates are bonded with epoxy adhesives. But, disbonds can occur at the bondinterphase due to variable environmental conditions, cyclic loading, aging, fatigue, amongst others, which may lead to a substantial reduction in load-bearing capacity of the structural assembly. Hence, it is essential to identify these hidden disbonds, and the identification becomes more challenging due to frequent change in ambient temperatures. It is found that the ultrasonic guided wave propagation based inspection technique is suitable for inspection of such complex multilayered structures. The aim of this paper is to investigate the disbond effects on the propagating wave modes in the JCS under variable ambient temperatures. Towards this, a series of finite element based numerical simulation of guided Lamb wave propagation in JCS under variable temperature is carried out in ABAQUS using piezoelectric actuator-sensor transducers. Laboratory experiments are then conducted to investigate the disbond effects and a good agreement is found between the simulation and experimental results.

Item Type: Book Section
Additional Information: Funding Information: The research work is funded by the Polish National Science Centre (NCN) under grant agreement number: DEC-2013/10/A/ST8/00071 in the frame of the MAESTRO 5 project and under grant agreement number: UMO-2016/23/N/ST8/01326 in the frame of the PRELUDIUM 12 project. Publisher Copyright: © 2018 SPIE.
Uncontrolled Keywords: disbond,dispersion,guided wave,jointed composite structure,piezoelectric transducer,electronic, optical and magnetic materials,condensed matter physics,computer science applications,applied mathematics,electrical and electronic engineering ,/dk/atira/pure/subjectarea/asjc/2500/2504
Faculty \ School: Faculty of Science > School of Engineering
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Depositing User: LivePure Connector
Date Deposited: 10 Nov 2021 08:26
Last Modified: 21 Apr 2023 01:47
DOI: 10.1117/12.2295928

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