TY - JOUR
T1 - A deep neural network based surrogate model for damage identification in full-scale structures with incomplete noisy measurements
AU - Bui-Ngoc, Tram
AU - Ly, Duy Khuong
AU - Truong, Tam T.
AU - Thongchom, Chanachai
AU - Nguyen-Thoi, T.
PY - 2024/3
Y1 - 2024/3
N2 - The paper introduces a novel approach for detecting structural damage in full-scale structures using surrogate models generated from incomplete modal data and deep neural networks (DNNs). A significant challenge in this field is the limited availability of measurement data for full-scale structures, which is addressed in this paper by generating data sets using a reduced finite element (FE) model constructed by SAP2000 software and the MATLAB programming loop. The surrogate models are trained using response data obtained from the monitored structure through a limited number of measurement devices. The proposed approach involves training a single surrogate model that can quickly predict the location and severity of damage for all potential scenarios. To achieve the most generalized surrogate model, the study explores different types of layers and hyperparameters of the training algorithm and employs state-of-the-art techniques to avoid overfitting and to accelerate the training process. The approach’s effectiveness, efficiency, and applicability are demonstrated by two numerical examples. The study also verifies the robustness of the proposed approach on data sets with sparse and noisy measured data. Overall, the proposed approach is a promising alternative to traditional approaches that rely on FE model updating and optimization algorithms, which can be computationally intensive. This approach also shows potential for broader applications in structural damage detection.
AB - The paper introduces a novel approach for detecting structural damage in full-scale structures using surrogate models generated from incomplete modal data and deep neural networks (DNNs). A significant challenge in this field is the limited availability of measurement data for full-scale structures, which is addressed in this paper by generating data sets using a reduced finite element (FE) model constructed by SAP2000 software and the MATLAB programming loop. The surrogate models are trained using response data obtained from the monitored structure through a limited number of measurement devices. The proposed approach involves training a single surrogate model that can quickly predict the location and severity of damage for all potential scenarios. To achieve the most generalized surrogate model, the study explores different types of layers and hyperparameters of the training algorithm and employs state-of-the-art techniques to avoid overfitting and to accelerate the training process. The approach’s effectiveness, efficiency, and applicability are demonstrated by two numerical examples. The study also verifies the robustness of the proposed approach on data sets with sparse and noisy measured data. Overall, the proposed approach is a promising alternative to traditional approaches that rely on FE model updating and optimization algorithms, which can be computationally intensive. This approach also shows potential for broader applications in structural damage detection.
KW - deep neural network
KW - finite element model updating
KW - full-scale structures
KW - noisy incomplete modal data
KW - vibration-based damage detection
UR - http://www.scopus.com/inward/record.url?scp=85194539522&partnerID=8YFLogxK
U2 - 10.1007/s11709-024-1060-8
DO - 10.1007/s11709-024-1060-8
M3 - Journal article
AN - SCOPUS:85194539522
SN - 2095-2430
VL - 18
SP - 393
EP - 410
JO - Frontiers of Structural and Civil Engineering
JF - Frontiers of Structural and Civil Engineering
IS - 3
ER -