The Application of Machine Learning in Structural Health Monitoring

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Computing and Artificial Intelligence".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 3373

Special Issue Editor

School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, China
Interests: structural health monitoring; advanced sensor network; computational materials; mechanics of aerospace structures

Special Issue Information

Dear Colleagues,

For decades, continuous efforts have been made in the area of structural health monitoring (SHM) due to its crucial role in real-time health state awareness and safety evaluation for various engineering structures. With its typical interdisciplinary nature, SHM embraces the advances in solid mechanics, sensor technology, signal processing, hardware design, etc. In particular, the recent success of machine learning (ML) that has been proven in a wide range of fields offers SHM new opportunities to be applied with enhanced applicability, accuracy, and reliability. To boost the application of ML in SHM tasks, however, some unique problems need to be considered. For example, the complex mapping relationship between monitored signals and health state characteristics (e.g., damage features), the insufficient and unbalanced data amount for healthy/unhealthy state classification, and the severe interference from uncertainties and noises due to the on-line service conditions of structures.

In this Special Issue, we invite worldwide researchers to publish their original works highlighting the state-of-the-art application of machine learning in structural health monitoring. The topics of submitted articles can cover both fundamental algorithms as well as lasting ML applications in aerospace, civil engineering, the automobile industry, machinery, and so on. The welcome topics include (among others):

  • Data generation and augmentation;
  • Robust model training to adapt to application environments;
  • Novel SHM-related knowledge obtained from data mining;
  • Uncertainty identification, propagation, and control in SHM process;
  • Image/pattern recognition using SHM/NDT techniques.

We look forward to receiving your contributions.

Dr. Hao Xu
Guest Editor

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Keywords

  • structural health monitoring
  • machine learning
  • deep learning
  • damage identification
  • state sensing and evaluation

Published Papers (2 papers)

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Research

16 pages, 2763 KiB  
Article
An Efficient Lightweight Deep-Learning Approach for Guided Lamb Wave-Based Damage Detection in Composite Structures
by Jitong Ma, Mutian Hu, Zhengyan Yang, Hongjuan Yang, Shuyi Ma, Hao Xu, Lei Yang and Zhanjun Wu
Appl. Sci. 2023, 13(8), 5022; https://doi.org/10.3390/app13085022 - 17 Apr 2023
Cited by 2 | Viewed by 1410
Abstract
Woven fabric composite structures are applied in a wide range of industrial applications. Composite structures are vulnerable to damage from working in complex conditions and environments, which threatens the safety of the in-service structure. Damage detection based on Lamb waves is one of [...] Read more.
Woven fabric composite structures are applied in a wide range of industrial applications. Composite structures are vulnerable to damage from working in complex conditions and environments, which threatens the safety of the in-service structure. Damage detection based on Lamb waves is one of the most promising structural health monitoring (SHM) techniques for composite materials. In this paper, based on guided Lamb waves, a lightweight deep-learning approach is proposed for identifying damaged regions in woven fabric composite structures. The designed deep neural networks are built using group convolution and depthwise separated convolution, which can reduce the parameters considerably. The input of this model is a multi-channel matrix transformed by a one-dimensional guided wave signal. In addition, channel shuffling is introduced to increase the interaction between features, and a multi-head self-attention module is designed to increase the model’s global modeling capabilities. The relevant experimental results show that the proposed SHM approach can achieve a recognition accuracy of 100% after only eight epochs of training, and the proposed LCANet has only 4.10% of the parameters of contrastive SHM methods, which further validates the effectiveness and reliability of the proposed method. Full article
(This article belongs to the Special Issue The Application of Machine Learning in Structural Health Monitoring)
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23 pages, 22565 KiB  
Article
A Feature of Mechanics-Driven Statistical Moments of Wavelet Transform-Processed Dynamic Responses for Damage Detection in Beam-Type Structures
by Jinwen Huang, Tongfa Deng, Maosen Cao, Xiangdong Qian and Mahmoud Bayat
Appl. Sci. 2022, 12(22), 11561; https://doi.org/10.3390/app122211561 - 14 Nov 2022
Cited by 2 | Viewed by 1318
Abstract
Multiple damage detection using structural responses only is a problem unresolved that is in the field of structural health monitoring. To address this problem, a novel feature of mechanics-driven statistical moments of wavelet transform-processed dynamic responses is proposed for multi-damage identification in beam-type [...] Read more.
Multiple damage detection using structural responses only is a problem unresolved that is in the field of structural health monitoring. To address this problem, a novel feature of mechanics-driven statistical moments of wavelet transform-processed dynamic responses is proposed for multi-damage identification in beam-type structures. This feature is referred to as a continuous wavelet transform (CWT)-second-order strain statistical moment (SSSM), with CWT-SSSM in the abbreviation. The mechanical connotation of CWT-SSSM lies in that the SSSM of each order principal vibration contains strain mode shapes, inducing greater sensitivity to local damage. With this method, the CWT is used to extract and amplify the singularities caused by damage in each order SSSM curve, following which the data fusion technology and three-sigma rule in statistics are adopted to construct the damage index. The presence of damage is characterized by the abrupt change in the damage index. The soundness and characteristics of the CWT-SSSM feature are verified by identifying multiple damages in a cantilever beam bearing two breathing cracks. The results show that the proposed feature can accurately designate multiple cracks free of baseline information on the intact counterpart; moreover, it has robustness against noise and applicability under excitations of approximately uniform spectra. Full article
(This article belongs to the Special Issue The Application of Machine Learning in Structural Health Monitoring)
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