A Novel Baseline-Free Method for Damage Localization Using Guided Waves Based on Hyperbola Imaging Algorithm
Author:
Xu Jichao1,
Zhu Wujun1,
Qiu Xunlin1,
Xiang Yanxun1
Affiliation:
1. Key Laboratory of Safety Science of Pressurized System of MOE, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
Abstract
Most imaging methods based on ultrasonic Lamb waves in structural health monitoring requires reference signals, recorded in the intact state. This paper focuses on a novel baseline-free method for damage localization using Lamb waves based on a hyperbolic algorithm. This method employs a special array with a relatively small number of transducers and only one branch of the hyperbola. The novel symmetrical array was arranged on plate structures to eliminate the direct waves. The time difference between the received signals at symmetrical sensors was obtained from the damage-scattered waves. The sequence of time difference for constructing the hyperbolic trajectory was calculated by the cross-correlation method. Numerical simulation and experimental measurements were implemented on an aluminum plate with a through-thickness hole in the current state. The imaging results show that both the damages outside and inside the diamond-shaped arrays can be localized, and the positioning error reaches the maximum for the diamond-shaped array with the minimum size. The results indicate that the position of the through-hole in the aluminum plate can be identified and localized by the proposed baseline-free method.
Funder
the National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference31 articles.
1. Su, Z., and Ye, L. (2009). Identification of Damage Using Lamb Waves: From Fundamentals to Applications, Springer Science & Business Media.
2. Rose, J.L. (2014). Ultrasonic Guided Waves in Solid Media, Cambridge University Press.
3. Evaluation of the sparse reconstruction and the delay-and-sum damage imaging methods for structural health monitoring under different environmental and operational conditions;Nokhbatolfoghahai;Measurement,2021
4. A focusing MUSIC algorithm for baseline-free Lamb wave damage localization;Xu;Mech. Syst. Signal Process.,2022
5. Application of ellipse and hyperbola methods for guided waves based structural health monitoring using fiber Bragg grating sensors;Soman;Health Monitoring of Structural and Biological Systems XV,2021
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