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

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Calculation and Analysis of structural stress optimization of high temperature reheated steam pipe 高温再热蒸汽管道结构应力优化计算与分析
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337545
Xin Liu, Yanming Zhang, Qun Liu, Liang Zhou, G. Xue, Liye Zhao, Xueyong Yang
{"title":"Calculation and Analysis of structural stress optimization of high temperature reheated steam pipe","authors":"Xin Liu, Yanming Zhang, Qun Liu, Liang Zhou, G. Xue, Liye Zhao, Xueyong Yang","doi":"10.1109/fendt50467.2020.9337545","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337545","url":null,"abstract":"Based on the analysis of the cracking failure cause of the large-thick wall tee fittings of the high-temperature reheat steam pipe of a 670MW unit in a power plant, it is found that the stress concentration of the weld structure deviating from the design size was the main reason for the failure of the weld. Through the optimization design of the structure of the failed weld, the finite element stress analysis method was used to reasonably calculate the stress distribution at the weld, and the on-site non-destructive testing technology and the support and hanger adjustment technology was accurately guided, and then the peak stress before and after the optimization of the weld structure was reduced from 295.55 MPa to 112.64 MPa, and the reduction ratio reached 162.38%. At the same time, the verification requirements of the third strength theory of materials was met, and a reliable safety status risk assessment for the safe operation of the unit was provided.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"3163 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":"127473112","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
Development of ultrasonic testing automatic scanning device based on path recognition 基于路径识别的超声波检测自动扫描装置的研制
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337523
Cheng Song, Benli Wan, Huai-Bei Dai, Hong Zhao, Yuhong Zhu, Bin Hu
{"title":"Development of ultrasonic testing automatic scanning device based on path recognition","authors":"Cheng Song, Benli Wan, Huai-Bei Dai, Hong Zhao, Yuhong Zhu, Bin Hu","doi":"10.1109/fendt50467.2020.9337523","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337523","url":null,"abstract":"Aiming at the high requirements of the stability and reliability of scanning devices based on new ultrasonic testing technologies for various butt welds of pressure equipment, a magnetic wheel adsorption automatic scanning device with path recognition function was designed. Solidworks is used for 3d modeling of the scanning device, and finite element method is used for magnetic adsorption analysis. Freescal MC9S12XS128 single-chip microcomputer is used as the control core. The path adjustment control algorithm adopts the incremental digital PID control algorithm, and the automatic crawler rapidly adjusts the motion direction according to the actual weld path to ensure the scanning accuracy of detection probe. The application shows that the permanent magnet wheel adsorption automatic scanning device with path recognition is feasible, which can realize the probe scanning track moving along the weld during the detection process smoothly, and can reach the motion precision required by ultrasonic detection.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"144 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":"123264276","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
Review on Advances in Alternating Current Field Measurement Testing Technology 交流磁场测量测试技术进展综述
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337512
Chaoyue Li, Peng Gao, Xuan Wang, Boda He, Jufeng Li
{"title":"Review on Advances in Alternating Current Field Measurement Testing Technology","authors":"Chaoyue Li, Peng Gao, Xuan Wang, Boda He, Jufeng Li","doi":"10.1109/fendt50467.2020.9337512","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337512","url":null,"abstract":"Compared with penetration testing technology and eddy current testing technology, Alternating current field measurement testing technology can detect the surface opening crack defects of metal specimens without polishing the surface coating. The detection signal can locate the crack defects and calculate the crack length and depth information, Which significantly improves the detection efficiency, so this technology has received more and more attention and research. After years of development, Alternating current field measurement technology has become increasingly powerful. Based on the literature in recent years, this article discusses the detection theory model, sensor design, detection signal processing methods, development trends, etc., pointing out further research issues of this technology, and better promoting the development of AC electromagnetic detection technology.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"110 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":"115698571","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
Research of Depth Evaluation for the Simulated Surface Crack Using Rayleigh Waves 基于瑞利波的模拟表面裂纹深度评价研究
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/FENDT50467.2020.9337543
Peng Deng, C. He, Y. Lyu, Di-Ping Yuan, Yi Xiao
{"title":"Research of Depth Evaluation for the Simulated Surface Crack Using Rayleigh Waves","authors":"Peng Deng, C. He, Y. Lyu, Di-Ping Yuan, Yi Xiao","doi":"10.1109/FENDT50467.2020.9337543","DOIUrl":"https://doi.org/10.1109/FENDT50467.2020.9337543","url":null,"abstract":"This paper provides some simulated surface cracks whose shape, size and extension mode are very close to the real cracks to study the validity of the method of using surface waves to evaluate the crack depth. The reflection and transmission coefficients of Rayleigh waves at cracks with different depths were obtained by using finite element method (FEM). Experiments were performed at a specimen with 8 simulated surface cracks and three couples of EMAT were employed. It shows that the measured transmission coefficients are virtually consistent with the FEM results, while the measured reflection coefficients are obviously smaller than the FEM results, and the difference is positively correlated with the frequency of Rayleigh waves. As a consequence, the depths of the simulated cracks were evaluated by comparing the measured transmission coefficients with the FEM obtained reference curves. At last, a crack depth quantitative detection method based on arrival time difference between low-frequency transmitted wave and delay transmitted wave is proposed.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"82 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":"125011639","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
Dynamic Detection of Rail Surface Crack Based on ACFM 基于ACFM的钢轨表面裂纹动态检测
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337521
Jianping Peng, Jian-Ji Fu, Jian-Ming Zhao, Xiang Zhang, Hui Yin
{"title":"Dynamic Detection of Rail Surface Crack Based on ACFM","authors":"Jianping Peng, Jian-Ji Fu, Jian-Ming Zhao, Xiang Zhang, Hui Yin","doi":"10.1109/fendt50467.2020.9337521","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337521","url":null,"abstract":"In view of the rail surface crack, The Alternating Current Field Measurement (ACFM) technology is easy to produce signal distortion at high speed. Based on the ACFM technology, this paper studies the influence of probe scanning speed, crack length and depth on the detection signal. Combined with the optical moving rail device and ACFM detector, a rail dynamic scanning platform is built. The scanning speed of the probe is controlled by changing the moving speed of the rail, and then the influence of the speed on the magnetic response is explored. The detection results show that: with the increase of the speed, the abnormal variables of Bx and Bz signals decrease gradually. When the speed increases to 100 mm/s, defects are missed; under the same length and width, the abnormal variables of Bx and Bz signals increase with the increase of the defect depth. Under the same depth and width, the abnormal variables of Bx and Bz signals increase with the increase of the defect length.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"5 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":"123664202","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
2020 IEEE Far East Forum on Nondestructive Evaluation/Testing: New Technology & Application (IEEE FENDT 2020) 2020 IEEE远东无损评估/检测论坛:新技术与应用(IEEE FENDT 2020)
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337530
{"title":"2020 IEEE Far East Forum on Nondestructive Evaluation/Testing: New Technology & Application (IEEE FENDT 2020)","authors":"","doi":"10.1109/fendt50467.2020.9337530","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337530","url":null,"abstract":"","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"71 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":"127841853","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
Evaluation of Fatigue Damage in Steels for Turbine Blades of Nuclear Plant by Magnetic Barkhausen Noise 用巴克豪森磁噪声评价核电站汽轮机叶片钢的疲劳损伤
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337537
Wangjie Qian, Ying-Jun Xu, X. Liu, Guodong Zhang, F. Xue, Xiang-Jun Huang, Mingya Chen
{"title":"Evaluation of Fatigue Damage in Steels for Turbine Blades of Nuclear Plant by Magnetic Barkhausen Noise","authors":"Wangjie Qian, Ying-Jun Xu, X. Liu, Guodong Zhang, F. Xue, Xiang-Jun Huang, Mingya Chen","doi":"10.1109/fendt50467.2020.9337537","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337537","url":null,"abstract":"In order to study the feasibility of the Magnetic Barkhausen Noise (MBN) technique for low cycle fatigue damage non-destructive testing (NDT) of X4CrNiCuMo steel for nuclear power turbine blades, the axial low cycle fatigue tests are carried out on X4CrNiCuMo steel specimens for turbine blades. The relationships between the MBN signal and microstructure, fatigue damage are studied by means of the MBN technique, transmission electron microscope (TEM) and metallographic microscope. The results showed that the MBN signal is very sensitive to low cycle fatigue damage. The MBN signal exhibits three main stages during the fatigue life. At the beginning of the test the MBN signal decreased rapidly, then it increased continuously and finally the signal suddenly dropped and then increased before failure. These successive stages can be associated to the typical stages of the low cycle fatigue life of metals such as cyclic hardening, cyclic softening and surface crack initiation and propagation. Thus, the MBN technique used in this paper can be an important reference for the fatigue damage assessment of turbine blades.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"17 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":"121767627","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
Effect of Turning Residual Stress Distribution on Barrel Radial Runout Stability 车削残余应力分布对枪管径向跳动稳定性的影响
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337525
Peng Yin, Chunguang Xu, Lin Wang, De-zhi Li, Yan-Chao Wang, Zeng-Xun Li
{"title":"Effect of Turning Residual Stress Distribution on Barrel Radial Runout Stability","authors":"Peng Yin, Chunguang Xu, Lin Wang, De-zhi Li, Yan-Chao Wang, Zeng-Xun Li","doi":"10.1109/fendt50467.2020.9337525","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337525","url":null,"abstract":"Aiming at the problem of the bending barrel due to residual stress during turning, a scheme which analyzes the dimensional stability of the barrel by using the method of the ultrasonic critical refraction longitudinal wave to measure the residual stress of barrel is proposed. According to measuring the distribution of residual stress and the data of radial runout of the barrel at different turning stages, and comparing the stress distribution of qualified and unqualified parts of the barrel's radial runout, it can be concluded the reason for product deformation, and that help to provide a reliable basis for the deformation law of the barrel's size at different turning stages. The results show that the non-destructive measurement of residual stress distribution state of the barrel during the turning process plays an important role in monitoring the dimensional stability of turned barrel.","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"63 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":"128251004","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
2020 IEEE Far East NDT New Technology & Application Forum (IEEE FENDT 2020) 2020 IEEE远东无损检测新技术与应用论坛(IEEE FENDT 2020)
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337513
{"title":"2020 IEEE Far East NDT New Technology & Application Forum (IEEE FENDT 2020)","authors":"","doi":"10.1109/fendt50467.2020.9337513","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337513","url":null,"abstract":"","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"62 6 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":"115077616","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
Research on optimization design of electromagnetic acoustic transducer 电磁声换能器的优化设计研究
2020 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2020-11-20 DOI: 10.1109/fendt50467.2020.9337526
Chang-chun Qiu, Hanbei Cheng, Zhen-bei Li, Gao-Fei Liu, Jing-Xin Guan, Shi-xiang Song
{"title":"Research on optimization design of electromagnetic acoustic transducer","authors":"Chang-chun Qiu, Hanbei Cheng, Zhen-bei Li, Gao-Fei Liu, Jing-Xin Guan, Shi-xiang Song","doi":"10.1109/fendt50467.2020.9337526","DOIUrl":"https://doi.org/10.1109/fendt50467.2020.9337526","url":null,"abstract":"For ferromagnetic materials, Low frequency acoustic waves can be excited by implementation of magnetostrictive effects and received by piezomagnetic effects. For guided waves inspection in steel plate, it is prerequisite to design a transducer that can excite and receive a pure mode guided wave. In this paper, a new optimized design method for electromagnetic acoustic transducer is proposed by using shear horizontal guided waves propagation in steel plate. The experimental results show that the electromagnetic acoustic transducer designed according to this method is better to implement the excitation and reception of a pure guided wave mode","PeriodicalId":302672,"journal":{"name":"2020 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"37 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":"125759090","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
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