Spectral Finite Element Method for Studying the Wave Response on using SH modes in Adhesively Bonded Metallic Joints

PAUNIKAR, SHWETA and GOPALAKRISHNAN, S (2017) Spectral Finite Element Method for Studying the Wave Response on using SH modes in Adhesively Bonded Metallic Joints. In: 11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017, 12 - 14 September 2017, Stanford.

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Abstract

The importance of adhesively bonded joints in aerospace industry is undebatable. But a defect proof joint is not guaranteed by even the most sophisticated manufacturing techniques. Hence, health monitoring of these joints is of utmost significance. Use of horizontally polarized shear waves for non-destructive testing of these joints is addressed in this work. Wave responses in a metallic plate are obtained using spectral finite element method. In this method, the displacement fields are first calculated in frequency domain using exact interpolating functions and then transformed back to time domain. This ensures very small computational system size. The spectral element developed here predicts the wave response of the fundamental shear mode that propagates non-dispersively and with a constant speed in a metallic plate. The computational time and effort required using this formulation are orders of magnitude smaller as compared to that using conventional finite element method.

Item Type:	Conference Paper
Publisher:	DEStech Publications
Additional Information:	The Copyright of this article belongs to the DEStech Publications.
Keywords:	Adhesive joints; Adhesives; Aerospace industry; Finite element method; Frequency domain analysis; Nondestructive examination; Plates (structural components); Safety engineering; Shear flow; Shear waves; Structural health monitoring; Adhesively bonded joints; Computational system; Displacement field; Interpolating functions; Manufacturing techniques; Non destructive testing; Orders of magnitude; Spectral finite element method; Time domain analysis
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	24 Jun 2022 09:14
Last Modified:	26 Jun 2022 09:51
URI:	https://eprints.iisc.ac.in/id/eprint/73519

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