基于长短期记忆神经网络的板裂纹损伤检测方法

doi:10.16183/j.cnki.jsjtu.2020.095

上海交通大学学报 ›› 2021, Vol. 55 ›› Issue (5): 527-535.doi: 10.16183/j.cnki.jsjtu.2020.095

所属专题：《上海交通大学学报》2021年“交通运输工程”专题；《上海交通大学学报》2021年12期专题汇总专辑

基于长短期记忆神经网络的板裂纹损伤检测方法

张松林, 马栋梁, 王德禹()

高新船舶与深海开发装备协同创新中心, 上海 200240

收稿日期:2020-04-01 出版日期:2021-05-28 发布日期:2021-06-01
通讯作者: 王德禹 E-mail:dywang@sjtu.edu.cn
作者简介:张松林(1995-),男,山东省济宁市人,硕士生,主要研究方向为船体结构损伤检测.
基金资助:
工信部高技术船舶科研项目([2016]548);教育部财政部重大专项(201335)

Method for Plate Crack Damage Detection Based on Long Short-Term Memory Neural Network

ZHANG Songlin, MA Dongliang, WANG Deyu()

Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2020-04-01 Online:2021-05-28 Published:2021-06-01
Contact: WANG Deyu E-mail:dywang@sjtu.edu.cn

摘要/Abstract

摘要：

针对板不同位置裂纹损伤的智能分类问题,提出了一种基于长短期记忆(LSTM)神经网络的板裂纹损伤检测方法.采用Abaqus二次开发建立板裂纹损伤模型,计算高斯白噪声激励下板的加速度响应,并通过数据扩充方法生成数据集,同时考虑了噪声对损伤检测的影响.建立基于LSTM的板裂纹智能检测模型,直接将板的加速度响应作为输入,不需要额外的损伤特征提取,并以最小预测误差为目标,选择模型的超参数,优化模型配置.与多层感知机模型和基于小波包变换的多层感知机模型进行对比表明,本文提出的LSTM模型在板裂纹损伤检测中具有更高的损伤定位精度和更好的适用性.

关键词: 损伤检测, 长短期记忆神经网络, 板裂纹, 噪声

Abstract:

Aimed at the problem of intelligent classification of crack damage in different positions of the plate, a method for plate crack damage detection based on long short-term memory (LSTM) neural network is proposed. The Abaqus secondary development is used to build the plate crack damage model and calculate the acceleration response of the plate under Gaussian white noise excitation. The data set is generated by data augmentation, and the influence of noise on damage detection is considered. An intelligent crack detection model based on LSTM is established, which directly takes the acceleration response of the plate as the input and does not require additional damage feature extraction. With the goal of minimizing prediction error, the hyperparameter of the model is selected and the model configuration is optimized. The comparison of the multi-layer perceptron model and the multi-layer perceptron model based on wavelet packet transform shows that the LSTM model proposed in this paper has a higher damage location accuracy and a better applicability in plate crack detection.

Key words: damage detection, long short-term memory (LSTM) neural network, plate crack, noise

中图分类号:

U663.6
TP183

张松林, 马栋梁, 王德禹. 基于长短期记忆神经网络的板裂纹损伤检测方法[J]. 上海交通大学学报, 2021, 55(5): 527-535.

ZHANG Songlin, MA Dongliang, WANG Deyu. Method for Plate Crack Damage Detection Based on Long Short-Term Memory Neural Network[J]. Journal of Shanghai Jiao Tong University, 2021, 55(5): 527-535.

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项目	参数
密度/(t·mm^-3)	7.85×10^-9
弹性模量/MPa	2.1×10⁵
泊松比	0.3
α/s^-1	7.2
β/s	2×10^-7

模态阶数	频率/Hz
模态阶数	简支	固支
1	38.33	81.35
2	49.79	90.54
3	68.94	107.50
4	95.84	133.21
5	130.60	167.99
6	142.98	211.80
7	154.35	222.11
8	173.34	231.92

参数	数值
时期	40
批处理大小	64
输入特征维度	11
隐藏层维度	12
LSTM层数	3
舍弃概率	0.5

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基于长短期记忆神经网络的板裂纹损伤检测方法

Method for Plate Crack Damage Detection Based on Long Short-Term Memory Neural Network

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