2020 IEEE Far East NDT New Technology & Application Forum (FENDT)最新文献_第2页

Effect of Wire Cutting Residual Stress on TC4 Seeker Deformation 线切割残余应力对TC4导引头变形的影响

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337542

Wenyu Song, Chunguang Xu, Peilu Li, L. Wang, Tao Yu, Wei Shi

引用次数: 0

A Method of Mixing with Multi-frequency Signals in Eddy Current Testing Based on NNT Cancellation Technology 基于NNT对消技术的涡流检测中多频信号混频方法

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337548

Shu-sheng Liao, Pan Qi, Mei-ming Feng, Yicheng Zhang, Wenxi Wei

{"title":"A Method of Mixing with Multi-frequency Signals in Eddy Current Testing Based on NNT Cancellation Technology","authors":"Shu-sheng Liao, Pan Qi, Mei-ming Feng, Yicheng Zhang, Wenxi Wei","doi":"10.1109/fendt50467.2020.9337548","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337548","url":null,"abstract":"A steam generator in NPS (Nuclear Power Station) usually has hundreds or even thousands of heat-transfer pipes. The flowing of liquid medium inside the pipes and the vibration outside the pipes can give rise to the flaws as wear or corrosion, which will influence the safety of the nuclear power facilities. It has been paid attention to search algorithms for detecting flaws all the time. In this paper, a method of mixing with multi-frequency eddy current signals based on NNT (Neural Network Technology) cancellation is put forward, in which, utilizing the measurement parameters about the calibration tubes, some techniques such as rotating the signal matrix, zeroing the mean of the columns of the signal matrix and NNT cancellation, are used for mixing signals, and then, the results are shown by Lissajous curve, through which the information about the flaws can be found. The practical detection result shows that, compared with the traditional mixing, this algorithm is more stable and the mixing result is relative ideal without structure information about the calibration tube.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116366219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nondestructive Testing of Train Rolling Bearings Using Improved Teager Energy Operator and Minimum Entropy Deconvolution 基于改进Teager能量算子和最小熵反卷积的列车滚动轴承无损检测

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337528

Xiaorong Gao, Hao Ye, Chun-rong Qiu, Lin Luo

{"title":"Nondestructive Testing of Train Rolling Bearings Using Improved Teager Energy Operator and Minimum Entropy Deconvolution","authors":"Xiaorong Gao, Hao Ye, Chun-rong Qiu, Lin Luo","doi":"10.1109/fendt50467.2020.9337528","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337528","url":null,"abstract":"In order to solve the problem that signal-to-noise ratio of vibration signals for early failure of rolling bearings in trains is low and fault features are difficult to extract. A new method for feature extraction combined with minimum entropy deconvolution (MED) and an improved Teager Energy Operator (TEO) was proposed to detect rolling bearing failure. In view of the excellent performance of MED in extracting the impact of the signal, MED was used on the noisy bearing vibration signal to reduce the noise interference and enhance the impact component in the signal, and then the improved TEO was used to demodulate the noise-reduced signal and extract the instantaneous impact components. The Fourier transform was performed on the demodulated Teager energy signal to obtain the Teager energy spectrum of the signal. The fault condition could be diagnosed by analyzing the main frequency components in the Teager energy spectrum. The proposed method was applied to the rolling bearing simulation data and the fault diagnosis examples of outer rings and rolling elements of train rolling bearings. The experimental results demonstrated that the proposed method can effectively reduce the noise of the signal and enhance the impact component of the signal to effectively diagnose the rolling bearing faults of the train, and have a certain application value.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117007139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Full Waveform Simulation Method of Elastic Wave for Multi-layer Bonding Structure 多层键合结构弹性波全波形模拟方法

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337544

Y. Hu, Shi-yuan Zhou, Lu Liu, F. Han, Chunguang Xu

引用次数: 0

Full laser-based Lamb waves array imaging based on the two-dimensional multiple signal classification algorithm 基于二维多信号分类算法的全激光Lamb波阵列成像

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/FENDT50467.2020.9337534

Zenghua Liu, Rui-Xiang Su, Tingting Zhang, Gong Yu, C. He, Bin Wu

{"title":"Full laser-based Lamb waves array imaging based on the two-dimensional multiple signal classification algorithm","authors":"Zenghua Liu, Rui-Xiang Su, Tingting Zhang, Gong Yu, C. He, Bin Wu","doi":"10.1109/FENDT50467.2020.9337534","DOIUrl":"https://doi.org/10.1109/FENDT50467.2020.9337534","url":null,"abstract":"Plates of aluminum have the advantages of low density, high strength and corrosion resistance, and are widely used in aviation, aerospace, shipbuilding and other industrial fields. Performing defect detection and structural health monitoring is of great significance for ensuring the health of facilities and maintaining normal production and use. Lamb waves can propagate long distances with low attenuation in metal plates to achieve long-distance non-destructive testing. Laser detection technology has been applied in the field of non-destructive testing and has the advantages of high spatial resolution and non-contact. In this study, Full laser-based Lamb waves array imaging based on the two-dimensional multiple signal classification algorithm is proposed to locate and image defects in the aluminum plate. A full laser ultrasonic detection system is used to excite and receive laser-based Lamb wave signals. The array is cross-shaped and is used to collect the data. Laser-based Lamb wave signals with wideband and low time domain resolution are processed by continuous wavelet transform to obtain a narrowband signal with certain central frequency. Finally, the two-dimensional multiple signal classification algorithm is used to realize the localization and imaging of defects in the aluminum plate.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124354898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Radial Basis Function Network-Based Pipeline Monitoring Signal Optimization 基于径向基函数网络的管道监测信号优化

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337531

B. Liu, Jian Hu, Yunhui Xiao

{"title":"Radial Basis Function Network-Based Pipeline Monitoring Signal Optimization","authors":"B. Liu, Jian Hu, Yunhui Xiao","doi":"10.1109/fendt50467.2020.9337531","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337531","url":null,"abstract":"Considering pipeline integrity monitoring based on piezoelectric sensors and Lamb wave, a radial basis function network (RBFN) based pipeline monitoring signal optimization method is proposed. This approach compensates for the time domain sampling length using the spatial domain sampling of the pipeline's Lamb wave sensing signals. In this method, several compensation piezoelectric sensors are arranged near the original piezoelectric sensor, and the sensing signal of each sensor is synthesized in turn after a time delay. Then the RBFN is trained using the synthetic sampling time and signal. This allows the synthetic error between the time delayed signal and the trained RBFN fitting value to be obtained. After calculation of the synthetic error of each delay time, the synthetic signal corresponding to the minimum point of the synthetic error is selected as the best synthetic signal. Finally, the optimized pipeline monitoring Lamb wave signal is obtained until all the piezoelectric sensors are synthesized. The proposed method was investigated on a DN100 L360MB pipeline. Experimental results indicate that the proposed method can effectively optimize the sampling length of the pipeline monitoring signal, thus improving the accuracy of the subsequent processing and analysis of the Lamb wave sensing signal. In addition, the optimized Lamb wave sensing signal is more simi-lar to the Lamb wave excitation signal as the spatial spacing decreases when the length of the spatial domain sampling is constant.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129762054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mirror Aided Ultrasonic Testing of the bonding interface of dual-alloy blisk through the bore 双合金圆盘通孔粘接界面的镜面辅助超声检测

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337516

Zhengxiao Sha, T. Gang, Jing Liang, Bongju Han

引用次数: 0

Research on Total Focusing detecting of Titanium Alloy by Additive Manufacturing 钛合金增材制造全聚焦检测方法研究

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337532

Chao Zhang, Bin Zhang, Kai-wen Xie, Xin Fu, Peikai Guo

{"title":"Research on Total Focusing detecting of Titanium Alloy by Additive Manufacturing","authors":"Chao Zhang, Bin Zhang, Kai-wen Xie, Xin Fu, Peikai Guo","doi":"10.1109/fendt50467.2020.9337532","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337532","url":null,"abstract":"Aiming at the additive manufacturing part by Electron Beam Rapid Manufacturing of TC4 (Ti-6Al-4V) titanium alloy, the research of total focusing detecting and imaging of internal small defects was carried out. Firstly, the CIVA software was used to simulate the sound field distribution with different transducer parameters, and the effect of the element center distance on the sound field was analyzed. Then, the total focusing method was used to detect the Φ0.4mm flat-bottom holes with buried depths between 3mm and 50mm. A high signal-to-noise ratio detecting method for this kind of structure was analyzed and summarized. The results show that, in a certain range, with the increase of the center distance of the array, the width and depth of the focal zone gradually decrease, and the resolution gradually increases. But at the same time, the energy of the sound field gradually disperses and the grating lobe phenomenon occurs; Olympus 10L64 linear array probe can be used to effectively detect the defects with a buried depth of 20mm-50mm, but the signal-to-noise ratio is relatively poor for the two cases with a buried depth of 3mm and 10mm, respectively. To overcome the disadvantage, a new transducer with smaller center distance is proved to be effective.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129465111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluorescence Detection and Analysis of Spot Defects in 2196 Aluminum-lithium Alloy Profiles 2196铝锂合金型材斑点缺陷的荧光检测与分析

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337554

T. Song, Lin Wang, Zeng-wei Lu, Dongchun Jin, Zelong Yu, Bin Zhang

引用次数: 0

Comparison of Turbulence Models on Erosion Wear Numerical Simulation of Elbow Pipe 湍流模型对弯头管冲蚀磨损数值模拟的比较

2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/FENDT50467.2020.9337518

Lichen Hu, Weiwei Hu, W. Jin, Huandong Huang, Li Sun, Wen-Bo Ni

引用次数: 1