Interactions of Lamb waves with defects in a thin metallic plate using the finite element method

Nurazima, Ismail and Z. M., Hafizi and C. K. E., Nizwan and S., Ali (2021) Interactions of Lamb waves with defects in a thin metallic plate using the finite element method. In: Advances in Mechatronics, Manufacturing, and Mechanical Engineering: Selected articles from MUCET 2019 , 19-22 November 2019 , Bukit Gambang Resort City, Pahang, Malaysia. pp. 183-193.. ISBN 978-981-15-7309-5

	Pdf 24. Interactions of Lamb waves with defects.pdf Restricted to Repository staff only Download (1MB) | Request a copy
Preview	Pdf 24.1 Interactions of Lamb waves with defects.pdf Download (87kB) | Preview

Abstract

A Lamb waves-based technique for damage detection is one of the promising diagnostic tools due to their ease of excitation and detection along with their ability to travel long distances. However, their dispersive and multimodal nature causing complicated wave signals and data interpretation in the damage detection process. The finite element method was performed in this study to understand their behaviour when interacting with defects for a successful implementation of this technique in Structural Health Monitoring system. FEA analysis was implemented to simulate the propagation of Lamb waves in the healthy and defective aluminium plate. The sensors are placed based on the configuration of the pulse-echo and pitch-catch method. It is noticed that there is an additional wave packet for the detected signals for defective plate based on the pulse-echo method whereas there is a significant delay in signal arrival for the pitch-catch method. This simulation study shows a significant feature extraction for the interactions of Lamb waves with defects. It is helpful for a good understanding before applying this technique for a real implementation.

Item Type:	Conference or Workshop Item (Lecture)
Additional Information:	Part of the Lecture Notes in Mechanical Engineering book series (LNME)
Uncontrolled Keywords:	Lamb Waves; Damage Detection; Finite Element Method; Structural Health Monitoring.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Faculty/Division:	Institute of Postgraduate Studies Faculty of Mechanical and Automotive Engineering Technology
Depositing User:	Pn. Hazlinda Abd Rahman
Date Deposited:	19 Jan 2021 07:42
Last Modified:	19 Jan 2021 07:42
URI:	http://umpir.ump.edu.my/id/eprint/28135
Download Statistic:	View Download Statistics

Actions (login required)

View Item