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工程设计学报  2022, Vol. 29 Issue (3): 272-278    DOI: 10.3785/j.issn.1006-754X.2022.00.045
设计理论与方法     
基于声信号识别的焊后残余应力处理质量检测方法
陈一帆(),吴倩,蒋凌(),华亮
南通大学 电气工程学院,江苏 南通 226000
Detection method of post-weld residual stress treatment quality based on acoustic signal recognition
Yi-fan CHEN(),Qian WU,Ling JIANG(),Liang HUA
College of Electrical Engineering, Nantong University, Nantong 226000, China
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摘要:

焊后残余应力处理过程的非线性程度高且参数耦合性强,导致处理质量不稳定。而现有检测方法仅做抽样检测,存在检测精度低、周期长等问题,且无法进行实时在线检测。为此,提出一种新的基于声信号识别的焊后残余应力处理质量在线检测方法。该方法先实时采集焊后残余应力处理过程中的声信号并提取其特征,然后构建基于多权值神经网络的焊后残余应力处理质量检测模型,以实现在线识别。实验结果表明,相比于传统检测方法,所提出方法可实现焊后残余应力处理质量的在线检测,可为焊后处理过程中的参数优化和质量控制提供参考。

关键词: 焊后残余应力处理多权值神经网络特征提取质量检测    
Abstract:

The post-weld residual stress treatment process has high nonlinearity and strong parameter coupling, which leads to unstable treatment quality. However, the existing detection method only performs sampling detection, which has the problems of low detection accuracy, longperiod, and can not carry out real-time online detection. Therefore, a new online detection method of post-weld residual stress treatment quality based on the acoustic signal recognition was proposed. In this method, the acoustic signal in the post-weld residual stress treatment process was collected in real time and its features were extracted, and then a post-weld residual stress treatment quality detection model based on the multi-weight neural network was constructed to realize online recognition. The experimental results showed that, compared with traditional detection methods, the proposed method could realize the online detection of post-weld residual stress treatment quality, which could provide reference for parameter optimization and quality control in the post-weld treatment process.

Key words: post-weld residual stress treatment    multi-weight neural network    feature extraction    quality detection
收稿日期: 2021-09-15 出版日期: 2022-07-05
CLC:  TG 441.8  
基金资助: 江苏省高等学校自然科学研究重大项目(19KJA350002);江苏省“六大人才高峰”高层次人才项目(XNY-039)
通讯作者: 蒋凌     E-mail: 825569568@qq.com;ntujiangling@163.com
作者简介: 陈一帆(1996—),男,江苏南通人,硕士生,从事模式识别研究,E-mail:825569568@qq.com
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引用本文:

陈一帆,吴倩,蒋凌,华亮. 基于声信号识别的焊后残余应力处理质量检测方法[J]. 工程设计学报, 2022, 29(3): 272-278.

Yi-fan CHEN,Qian WU,Ling JIANG,Liang HUA. Detection method of post-weld residual stress treatment quality based on acoustic signal recognition[J]. Chinese Journal of Engineering Design, 2022, 29(3): 272-278.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2022.00.045        https://www.zjujournals.com/gcsjxb/CN/Y2022/V29/I3/272

图1  超声冲击实验平台

实验参数(冲击速度、冲击频率、

冲击压力、板材厚度)

残余应力处理结果
16 cm/min、18 kHz、30 N、6 cm不合格
16 cm/min、25 kHz、30 N、8 cm合格
16 cm/min、18 kHz、40 N、8 cm不合格
16 cm/min、25 kHz、50 N、10 cm合格
16 cm/min、25 kHz、50 N、12 cm合格
32 cm/min、25 kHz、30 N、6 cm合格
32 cm/min、18 kHz、30 N、8 cm不合格
32 cm/min、18 kHz、40 N、10 cm不合格
32 cm/min、25 kHz、50 N、10 cm合格
32 cm/min、25 kHz、50 N、10 cm不合格
表1  Q235钢焊接试板的焊后残余应力处理质量判定结果(部分)
图2  声信号采集平台
图3  滤波处理前后声信号的频谱图对比
图4  焊后残余应力处理质量不同时声信号的短时平均过零率对比
图5  焊后残余应力处理质量不同时声信号的梅尔倒频谱图对比
图6  焊后残余应力处理质量不同时声信号的组合特征对比
图7  基于多权值神经网络的焊后残余应力处理质量检测模型识别结果对比
识别算法训练样本数量/组识别数量/组识别率/%

多权值神经

网络

53792.5
83895.0
103997.5
SVM53177.5
83382.5
103587.5
BP神经网络53280.0
83485.0
103587.5
表 2  基于不同算法的焊后残余应力处理质量检测模型的识别率对比
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