发布求助
文献互助 智能选刊 最新文献

2015 IEEE Far East NDT New Technology & Application Forum (FENDT)最新文献

筛选
英文 中文
Propagation of laser-generated visco-elastic Rayleigh-like waves in coatings 激光产生粘弹性瑞利波在涂层中的传播
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398347
Q. Han, Xueping Jiang, J. Jia, Changping Zhu
{"title":"Propagation of laser-generated visco-elastic Rayleigh-like waves in coatings","authors":"Q. Han, Xueping Jiang, J. Jia, Changping Zhu","doi":"10.1109/FENDT.2015.7398347","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398347","url":null,"abstract":"This paper reports on a study of the propagation characteristics of visco-elastic, Rayleigh-like waves in coatings. Beginning with the Kelvin model, the characterization equation and the normal displacement of visco-elastic Rayleigh waves in stratified half-space structures are derived and the influence of the visco-elastic modulus on dispersion and attenuation are discussed. The transient response of a visco-elastic Rayleigh wave is also simulated by means of Laplace and Hankel inversion transforms. The results are in good agreement with the theoretic predictions. It is believed the paper's results and conclusions will provide insights and guidance for estimating visco-elastic parameters.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129182047","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
Investigation on conductivity invariance in eddy current NDT and its application on magnetic permeability measurement 涡流无损检测中电导率不变性的研究及其在磁导率测量中的应用
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398350
Yating Yu, Yu Zou, M. Jiang, Dejun Zhang
{"title":"Investigation on conductivity invariance in eddy current NDT and its application on magnetic permeability measurement","authors":"Yating Yu, Yu Zou, M. Jiang, Dejun Zhang","doi":"10.1109/FENDT.2015.7398350","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398350","url":null,"abstract":"Eddy current (EC) non-destructive testing (NDT) is one of the most widely used NDT techniques. Electrical conductivity and magnetic permeability of the sample have serious impacts on the detected signal-magnetic flux density (Bz) in the EC NDT. Therefore, how to separate one's impact on the magnetic flux density from another is an important issue, which has abstracted more and more researchers' interests. In this paper, the conductivity invariance (CI) phenomenon was found when we investigated the impact that the conductivity random distribution in vertical direction on the detected signal using finite element method. The CI phenomenon also could be found when the excitation frequency changes. According to the conductivity invariance (CI) phenomenon, when the liftoff is appropriate, the conductivity of the sample has little influence on the magnetic flux density. Therefore, the CI phenomenon is proposed to the measurement of magnetic permeability in this paper.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"415 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126698882","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: 7
Detecting non-magnetic conducting flat plates with pulsed Remote Eddy Current Field technique 脉冲远程涡流场技术检测非磁性导电平板
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398352
Bin-feng Yang, Hui Zhang, Chao Zhang, Haijiao Cao
{"title":"Detecting non-magnetic conducting flat plates with pulsed Remote Eddy Current Field technique","authors":"Bin-feng Yang, Hui Zhang, Chao Zhang, Haijiao Cao","doi":"10.1109/FENDT.2015.7398352","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398352","url":null,"abstract":"Non-magnetic metal plates are widely used in aviation and industry areas. The detection of cracks in thick-plate structures, such as multilayered structures of aircraft fuselage, has been challenging in Nondestructive Evaluation (NDE) societies. Remote Field Eddy Current (RFEC) technique has shown advantages of deep penetration and high sensitivity to anomalies deeply buried. However, RFEC technique is mainly used to evaluate ferromagnetic tubes. There are many problems which should be tackled before this technique is expanded and applied to the inspection of non-magnetic conductive plates. In this paper, Pulsed Remote Field Eddy Current (PRFEC) for detection of non-magnetic conducting plates is investigated. The principle of PRFEC is analyzed firstly. The influence of different UTC materials to detecting ability are analyzed. The defect detection sensitivity and the detectability to thick plates by using three probes are also analyzed and compared. Simulation results show that the UTC material should be same with the plate in detecting of non-magnetic specimen and the probe with a ferrite yoke has highest detectability. The conclusions derived from the simulation study are also validated by experiments.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132369772","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
An investigation and review into microwave thermography for NDT and SHM 微波热成像技术在无损检测和SHM中的研究进展
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398326
Ruizhen Yang, Hong Zhang, Teng Li, Yunze He
{"title":"An investigation and review into microwave thermography for NDT and SHM","authors":"Ruizhen Yang, Hong Zhang, Teng Li, Yunze He","doi":"10.1109/FENDT.2015.7398326","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398326","url":null,"abstract":"Infrared (IR) thermography is a fast-growing Nondestructive Testing (NDT) technique. Various sources can be used as the thermal stimulation, such as flash lamps, laser, ultrasound, and eddy current etc. Currently, various quantification methods for defect depth estimation are built based on the surface heating, heat conduction or thermal wave diffusion. Microwave heating is a new heating technique, which has a lot of advantages, such as strong penetrability, selective heating, volumetric heating, significant energy savings, uniform heating, and good thermal efficiency. In this work, the basic principle of microwave thermography (MWT) is introduced. The developments and case studies of microwave thermography are reviewed.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130019419","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: 7
Ultrasonic inspection of partially completed welds using EMAT-generated surface wave technology 利用emat产生的表面波技术对部分完成的焊缝进行超声波检查
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398351
Huidong Gao, B. López, Xavier Minguez, Jianbin Chen
{"title":"Ultrasonic inspection of partially completed welds using EMAT-generated surface wave technology","authors":"Huidong Gao, B. López, Xavier Minguez, Jianbin Chen","doi":"10.1109/FENDT.2015.7398351","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398351","url":null,"abstract":"Weld inspection is a recurring topic in nondestructive testing because of the potential safety and environmental impact associated to poor weld quality. Thick-wall, multi-pass welds are very common in construction, bridge building, ship building, pressure vessel, and many other industries. This paper presents a novel technique to provide process and quality control of a partially completed weld after each individual weld pass, which can provide significant savings in time and money. The technique uses electromagnetic acoustic transducer (EMAT) to generate surface acoustic waves that detect defects on the top-most layer of a multi-pass weld. The paper describes the theory and empirical verification on a partially finished weld with 100mm thick base metal.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134415475","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: 4
Implementing ultrasonic guided wave mode control in hollow cylinders 在空心圆筒中实现超声导波模态控制
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398315
Xiao-wei Zhang, Zhifeng Tang, Sujun Luo, L. Fuzai, Ye Han
{"title":"Implementing ultrasonic guided wave mode control in hollow cylinders","authors":"Xiao-wei Zhang, Zhifeng Tang, Sujun Luo, L. Fuzai, Ye Han","doi":"10.1109/FENDT.2015.7398315","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398315","url":null,"abstract":"Ultrasonic guided waves have been successfully applied in Non-Destructive Evaluation (NDE) and Structural Health Monitoring (SHM) of pipelines of various industries. Guided waves are complicated because of their dispersive nature and infinite number of propagating modes. Mode control is of great significance for application of guided waves. The classical Normal Mode Expansion (NME) method is adopted to analyze guided wave mode control in hollow cylinders by using time delay axial array transducers and time delay circular array transducers. Guided wave mode control can be implemented when the axial array transducers and circular array transducers are specially designed. The theoretical prediction is verified by finite element numerical evaluation.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131740758","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
Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs 基于全向lamb波emat的平板缺陷电磁超声层析成像
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398313
L. Kang, Chao Zhang, Ping Chen, Jianguo Li, Yixuan Zhang
{"title":"Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs","authors":"L. Kang, Chao Zhang, Ping Chen, Jianguo Li, Yixuan Zhang","doi":"10.1109/FENDT.2015.7398313","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398313","url":null,"abstract":"This paper presents the design method of omnidirectional Lamb-wave electromagnetic acoustic transducers (EMATs) for electromagnetic ultrasonic Lamb wave tomography technique. The 360 degrees radiated A0 mode Lamb wave is excited through the selection of the appropriate working point, which not only can realize large range detection of plate structure, but also be more convenient to extract feature of the echo. The travel time between the transmitting and receiving EMATs is measured through using crosshole scanning method. Then slowness image reconstruction is realized by using SIRT (Simultaneous Iterative Reconstruction Technique). The experimental result of imaging of a 1.5 mm deep artificial defect with a diameter of 26 mm in 2mm thick aluminum plate is obtained, according to which the defect can be found.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127511577","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: 4
The optimization of transducer layout in rail flaw detection 钢轨探伤中传感器布局的优化
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398323
Lei Zhang, Xiaorong Gao, Wo Wang, Chaoyong Peng
{"title":"The optimization of transducer layout in rail flaw detection","authors":"Lei Zhang, Xiaorong Gao, Wo Wang, Chaoyong Peng","doi":"10.1109/FENDT.2015.7398323","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398323","url":null,"abstract":"The railway is a kind of large volume public transportation, and more and more attention is paid to the safety of rails nowadays. As the rail is subject to heavy cyclic loads of trains, it is easily broken in the long-term operations, and this will seriously affect the safety of the trains. As an important rail flaw detection method, ultrasonic testing has been widely utilized to ensure the safety of the rail. However, the existing programs of this method normally have problems such as the deflection angle of transducer, number of transducers and frequent replacement of transducer layout. A new method was proposed in this paper, which is based on both the conventional transducer and the phased array transducer. Matlab software and acoustics approach were employed to optimize the parameters and the deflection angle of transducers. Results show that this method is experimentally reasonable and it can meet requirements of rail flaw detection.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126846804","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
The design & implementation of three-dimensional analysis and evaluation system of sludge in nuclear power evaporator 核电蒸发器污泥三维分析评价系统的设计与实现
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398316
Qianfei Yang, Keqing Wang, Yusu Chen, Lei Zhao
{"title":"The design & implementation of three-dimensional analysis and evaluation system of sludge in nuclear power evaporator","authors":"Qianfei Yang, Keqing Wang, Yusu Chen, Lei Zhao","doi":"10.1109/FENDT.2015.7398316","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398316","url":null,"abstract":"During the running of nuclear power plant, corrosion products and impurities will be migrated from the secondary circuit to the steam generator. Some of them will stay inside the steam generator as sludge and they will gradually deposit on tube plate, the upper part of support plate, surface of tubes and the gap between the support plate and tubes. These sludge will be deposited on the surface of heat transfer tubes or on the tube plate, leading to the serious defects such as the corrosion inside steam generator and posing a major threat to the safe operation of nuclear power unit. In order to ensure the safe and stable running of nuclear power unit, it becomes particularly important to do evaluation on the deposition conditions of sludge in the certain area of evaporator. This paper adopts the non-destructive testing method based on eddy current and three-dimensional modeling & rendering engine of Unity3D to have a three-dimensional display on the deposition and distribution of sludge in multiple-pile evaporator. This clearly and effectively exhibits the sedimentation situation of sludge in evaporator, effectively improves the evaluation accuracy and provides an important basis for the subsequent sludge cleaning work.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127421055","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
Acoustoelastic Lamb wave analysis in thin plates 薄板声弹性兰姆波分析
2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398329
N. Pei, L. Bond
{"title":"Acoustoelastic Lamb wave analysis in thin plates","authors":"N. Pei, L. Bond","doi":"10.1109/FENDT.2015.7398329","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398329","url":null,"abstract":"Fabrication processes, such as, shot peening, bending, and rolling can induce residual stresses in metals that will impact product performance and cause phenomena such as cracking and corrosion. To better manage residual stress tools are needed to map their distribution. Ultrasonic methods can be used as a good tool for residual stress detection, and this approach is non-destructive and costs are modest. Methods which utilize longitudinal critically refracted (LCR) waves are receiving increased attention and it can be used on thick material. However, there have only been a limited number of studies which consider the acoustoelastic effect for thin plate materials which generate Lamb waves. This paper reports a study in which a numerical model is used to investigate the Lamb wave dispersion curves under loading that induce stresses. The effects of stress on various Lamb modes are discussed and those which appear to be most sensitive are identified. It is found that when the stress's direction is normal to the direction of wave propagation in a 1 mm thick aluminum plate the A0 mode is the most sensitive to the applied stress.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130648737","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信