[1]彭畅,鞠增业,张子璠,等.变温度条件下基于代理模型的Lamb波裂纹定量诊断方法研究[J].高速铁路技术,2024,15(04):19-23.[doi:10.12098/j.issn.1674-8247.2024.04.004]
　PENG Chang,JU Zengye,ZHANG Zifan,et al.Study on Quantitative Diagnosis Method of Lamb Waves for Cracks under Varying Temperature Conditions Based on Surrogate Models[J].HIGH SPEED RAILWAY TECHNOLOGY,2024,15(04):19-23.[doi:10.12098/j.issn.1674-8247.2024.04.004]
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变温度条件下基于代理模型的Lamb波裂纹定量诊断方法研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
15卷
期数:
2024年04期
页码:
19-23
栏目:
理论探索
出版日期:
2024-08-30

文章信息/Info

Title:
Study on Quantitative Diagnosis Method of Lamb Waves for Cracks under Varying Temperature Conditions Based on Surrogate Models
文章编号:
1674-8247（2024）04-0019-05
作者:
彭畅1; 鞠增业1; 张子璠1; 王光君1; 马龙1; 张小振2
1.中车青岛四方机车车辆股份有限公司，青岛266229;2.中南大学，长沙410083
Author(s):
PENG Chang1; JU Zengye1; ZHANG Zifan1; WANG Guangjun1; MA Long1; ZHANG Xiaozhen2
1.CRRC Qingdao Sifang Co. ， Ltd. ， Qingdao 266229 ，China;2.Central South University ， Changsha 410083 ，China
关键词:
Lamb波; 变温条件; 特征值提取; 特征值响应面; Kriging代理模型; 裂纹定量诊断
Keywords:
Lamb waves; varying temperature conditions; characteristic value extraction; characteristic value response surface; Kriging surrogate model; quantitative crack diagnosis
分类号:
U213.2+44
DOI:
10.12098/j.issn.1674-8247.2024.04.004
文献标志码:
A
摘要:
高速列车运行环境复杂多变，因循环载荷作用内部结构会产生裂纹等损伤。为实现不同温度环境中对列车结构裂纹的实时检测和诊断，本文研究了-40℃～85℃的环境中Lamb波裂纹定量诊断方法。将试验材料置于不同的温度梯度下，进行Lamb波信号的激励和收集，接着进行变温条件下Lamb波裂纹定量监测试验，获得了不同温度和裂纹长度条件下的Lamb波信号，通过归一化幅值提取了相位变化和相关系数3个特征值。将特征值作为Kriging代理模型的训练样本，生成基于特征值的响应面构建诊断参数的三维模型，实现了不同温度条件下裂纹的定量诊断。
Abstract:
High-speed trains operate in complex and variable environments，in which cyclic loading will result in cracking and other damages to the internal structure of trains. To enable real-time detection and diagnosis of structural cracks in trains under diverse temperature environments，this study investigated a quantitative diagnostic method of Lamb waves for cracks over the temperature range of - 40℃ to 85℃. The specimens were subjected to various temperature gradients，followed by the excitation and acquisition of Lamb wave signals under these conditions. Subsequently，a temperature-dependent quantitative monitoring experiment for Lamb wave-assisted crack detection was conducted，yielding Lamb wave signals corresponding to different temperatures and crack lengths. Normalized amplitude values were used to extract three characteristic values representing phase shifts and correlation coefficients. These characteristic values served as training samples for a Kriging surrogate model，which generates a response surface based on the feature values to construct a three-dimensional model of diagnostic parameters. This model enables quantitative diagnosis of cracks under varying temperature conditions.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2022-09-05
作者简介：彭畅（1988-），男，高级工程师。
更新日期/Last Update: 2024-08-30