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

From NDT to prognostics: advanced technologies for improved quality, safety and reliability 从无损检测到预测:提高质量、安全性和可靠性的先进技术

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7423235

L. Bond

引用次数: 5

An investigation into atmospheric corrosion detection under paint with K-band microwave NDT k波段微波无损检测涂料大气腐蚀的研究

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398343

Hong Zhang, Lin Xu, Luxiong Xu, Jusheng Wu, Yunze He

引用次数: 1

Innovative robotic technology for monitoring the integrity of generator retaining rings 用于监测发电机固定环完整性的创新机器人技术

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398298

M. Savenkov, Michael Turner, Andres Peralta-Gorisse

引用次数: 0

Fast total focusing method by a migration approach 基于偏移法的快速全聚焦方法

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398325

E. Carcreff, Guiyang Lv, D. Braconnier

引用次数: 0

Application of acoustoelasticity in studying compressive stress state in Polymer bonded explosive 声弹性在聚合物粘结炸药压应力状态研究中的应用

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398318

Yao Xu, Zhan-feng Yang, Hai-qiang Zhou, Wei-bin Zhang

{"title":"Application of acoustoelasticity in studying compressive stress state in Polymer bonded explosive","authors":"Yao Xu, Zhan-feng Yang, Hai-qiang Zhou, Wei-bin Zhang","doi":"10.1109/FENDT.2015.7398318","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398318","url":null,"abstract":"The acoustoelastic technique is a nondestructive technique for analyzing the stress state in materials using ultrasonic waves. The velocities of the ultrasonic waves propagating through Polymer bonded explosive (PBX) change depending on the applied stress (compression or tension). In this paper, PBX specimens at close range of densities and ultrasonic wave velocities under similar initial conditions are applied in the compressive loading tests. Ultrasonic longitudinal wave propagation direction is parallel and perpendicular to applied stress direction respectively. Longitudinal wave velocities are accurately and efficiently achieved by real-time Ultrasonic time differences (velocity) measurement unit. In the range of stress evaluated under compression between 0 and 15MPa, these relations between the relative variation of the longitudinal wave velocity and the applied stress vary linearly. The value of acoustoelastic constant (K) can be determined by the compression tests. These founds suggest the potential of applying the acoustoelastic effect to determine the compressive stress condition of PBX in a certain stress range.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"33 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":"133768143","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

Measurement of residual stresses in materials and welded elements using ultrasonic method 用超声波法测量材料和焊接元件的残余应力

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398328

J. Kleiman, Y. Kudryavtsev

{"title":"Measurement of residual stresses in materials and welded elements using ultrasonic method","authors":"J. Kleiman, Y. Kudryavtsev","doi":"10.1109/FENDT.2015.7398328","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398328","url":null,"abstract":"The application of an ultrasonic non-destructive method for residual stress (RS) measurements has shown that, in many cases, this technique is very efficient and allows measuring the RS both in laboratory conditions and in real structures in field for a wide range of materials. Using this technique, one can measure the RS at the same points many times, studying for instance, the changes of RS under the action of service loading or effectiveness of stress-relieving techniques. The ultrasonic computerized complex (UCC) for non-destructive measurement of residual and applied stresses that was developed recently includes a measurement unit with transducers and basic supporting software. The developed system allows measuring the RS either averaged through thickness or in surface or subsurface layers and displaying the results in a form of a continuous curve on the screen of the instrument. The present version of UCC allows measuring the averaged through thickness biaxial RS in plates 2 - 150 mm thick and surface/subsurface RS at the predetermined depth. The results of ultrasonic RS measurement in large scale welded specimens and structures are also discussed in this paper.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"147 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":"123077963","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: 3

Research on axle press-fit defects detection optimizing 轴压配合缺陷检测优化研究

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398354

Chaoyong Peng, Xiaorong Gao, Yang Yang, Ai Wang, Dong-dong Wu, Jia-yu Zhao

引用次数: 0

Study of image fusion algorithm to edge erosion of titanium alloy with DR detection 基于DR检测的钛合金边缘侵蚀图像融合算法研究

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398322

Wu Wei, Xiangxue Zhang, Hu Li, Guanhua Wu

{"title":"Study of image fusion algorithm to edge erosion of titanium alloy with DR detection","authors":"Wu Wei, Xiangxue Zhang, Hu Li, Guanhua Wu","doi":"10.1109/FENDT.2015.7398322","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398322","url":null,"abstract":"This paper studies the image fusion algorithm of edge corrosion on large thickness difference titanium alloy with DR detection. First collected the DR digital image of large thickness difference workpiece, then calculated the edge width of image with ImageJ, and finally handled with edge corrosion area through the image fusion technology of PCNN. The information of fused image was more wealth than the original image so that could reduce the width of edge erosion, which could restore covered defects and achieve the aim of improving the detection rate of defects. This paper is based on the comparison between PCNN algorithm and another fusion algorithms, and assessed the quality of fused image with the width of edge erosion, sensitivity of thickness, resolution of IQI, information entropy(ENTROPHY), mutual information(MI), correlation coefficient(CL). The result of research shows that PCNN algorithm is superior to another algorithms in the aspect of information entropy, mutual information, which mainly embodies that PCNN image fusion algorithm can get more detailed information of the original image. Besides, PCNN algorithm can effectively reduce image's edge erosion, improves image resolution and image thickness sensitivity, which can restore more overwritten defects with the aim to improve the defect detection rate.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"13 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":"128088190","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

Ultrasonic signal compressive sampling and its application in pipeline flaw inner inspection 超声信号压缩采样及其在管道缺陷内部检测中的应用

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398310

Shoupeng Song, Y. Li, Yun-jiao Wang, Y. Du

引用次数: 0

Study on focusing characteristics of curved phased array probe 弯曲相控阵探头聚焦特性研究

2015 IEEE Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2015-05-28 DOI: 10.1109/FENDT.2015.7398311

Huan-qing Cao, Zhongbing Luo, Bo-kun Zhou, Hui-min Su, Li Lin

{"title":"Study on focusing characteristics of curved phased array probe","authors":"Huan-qing Cao, Zhongbing Luo, Bo-kun Zhou, Hui-min Su, Li Lin","doi":"10.1109/FENDT.2015.7398311","DOIUrl":"https://doi.org/10.1109/FENDT.2015.7398311","url":null,"abstract":"The focusing principle of curved phased array probe was investigated through experiment and acoustic simulation. Two sets of delay time, i.e. the linear and curved array mode, were applied to the curved phased array probe respectively, and the corresponding characteristics of ultrasound field were analyzed. Numerical results show that under the condition of linear array mode, the ultrasound of side elements could not effectively focus to the axial ultrasound beam due to the phase mismatching between elements. These energy dissipations could be weakened with the decrease of aperture size or the increase of nominal focal depth. Besides, the actual focal position disagreed with the nominal focal depth, but kept approaching to the curvature center of probe due to the superposition of electronic focusing in linear array mode and the natural focusing induced by the circular-arrayed elements. Correspondingly, the evolution of ultrasound pressure on the radii surface with the nominal focal depth was also influenced which resembled those for experimental results. These would provide referential significance for the practical engineering applications of curved phased array probe.","PeriodicalId":434318,"journal":{"name":"2015 IEEE Far East NDT New Technology & Application Forum (FENDT)","volume":"46 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":"128958100","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