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2019 Far East NDT New Technology & Application Forum (FENDT)最新文献

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Ultrasonic microscopy system performance calibration technology 超声显微镜系统性能标定技术
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962731
Qiutao Wang, Chunguang Xu, Yan-ling Zhu, C. Yang, Lei He
{"title":"Ultrasonic microscopy system performance calibration technology","authors":"Qiutao Wang, Chunguang Xu, Yan-ling Zhu, C. Yang, Lei He","doi":"10.1109/FENDT47723.2019.8962731","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962731","url":null,"abstract":"This article describes how to calibrate and compensate the performance of an ultrasonic microscopy system. Starting from the ultrasonic characteristics and ultrasonic transducers, the factors affecting the detection performance of the ultrasonic microscopy system were analyzed, and the calibration methods for the lateral and vertical detection dimensional accuracy were proposed respectively. The compensation method of detection performance was studied by learning the source of error. In the experiments, lateral and vertical dimension detection calibration blocks were fabricated and tested, and the calibration results were obtained.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940898","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
Multimode Testing for Delamination Defects of Composite Materials Using Ultrasonic Guided Waves 复合材料分层缺陷的超声导波多模检测
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962700
Shi-yuan Zhou, Peng-jiao Yao, Chunguang Xu, Xiao-dan Hu
{"title":"Multimode Testing for Delamination Defects of Composite Materials Using Ultrasonic Guided Waves","authors":"Shi-yuan Zhou, Peng-jiao Yao, Chunguang Xu, Xiao-dan Hu","doi":"10.1109/FENDT47723.2019.8962700","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962700","url":null,"abstract":"Delamination defects are one of the typical defects of composites materials. Due to the complex distributions of delamination defects, it is hard to use one mode of guided waves to detect delamination defects with different distributions. Thus a multimode testing method is highly demanded. Apply semi-analysis finite element (SAFE) method to calculate dispersion curves and wave structure. Several mode-frequency points from dispersion curves will be selected to do finite element simulation for delamination defects with different sizes but the same depth of composite materials plates. Then analyzes the sensitivity of guided waves for different delamination defects. The sensitive modes are selected to do defects testing experiments for composite materials plate with different delamination defects. The results show that using two or more mode-frequency points can detect out delamination defects with different sizes.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121403113","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
Ultrasonic microscopy method for coating and interface bonding quality detection 涂层和界面粘合质量检测的超声显微镜方法
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962664
Qiutao Wang, Chunguang Xu, C. Yang, Yan-ling Zhu, Lei He
{"title":"Ultrasonic microscopy method for coating and interface bonding quality detection","authors":"Qiutao Wang, Chunguang Xu, C. Yang, Yan-ling Zhu, Lei He","doi":"10.1109/FENDT47723.2019.8962664","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962664","url":null,"abstract":"This paper describes methods for non-destructive testing of the bonding quality of coatings and interfaces by an ultrasonic microscopy system. Based on previous studies, the reflection and transmission echoes of ultrasonic waves at the coating/matrix and other forms of multi-layer interfaces were analyzed, and the relationship between the echo signals and bonding quality of the interfaces was derived. The ultrasonic microscopy was used for non-destructive testing. In experiments, coating specimens, a titanium alloy superconducting device and the laminated Silicon wafers were tested and bonding qualities of which were obtained.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127711937","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 on microcrack algorithm based on eddy current pulsed thermography 基于涡流脉冲热成像的微裂纹算法研究
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962543
Lingfan Feng, X. Gao, Jianping Peng, J. Bai, Hui Yin, Jianji Fu, Jianqiang Guo
{"title":"Research on microcrack algorithm based on eddy current pulsed thermography","authors":"Lingfan Feng, X. Gao, Jianping Peng, J. Bai, Hui Yin, Jianji Fu, Jianqiang Guo","doi":"10.1109/FENDT47723.2019.8962543","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962543","url":null,"abstract":"With the increase of fatigue rolling cycles between the wheel and rail, it’s easy to generate small angle microcracks on the surface or shallow surface of the rail, which is located in the blind spot of ultrasonic detection. Therefore, pulsed eddy current thermography (ECPT) is selected for detection. In this paper, the finite element software was used to simulate the thermal characteristics of microcracks, and the data was extracted for simulation data analysis. Then principal component analysis(PCA), tensor CANDECOMP/PARAFAC de- composition(CP), and Tucker decomposition were compared horizontally, and the signal-to-noise ratios (SNR) of the three algorithms were obtained by experimental data. Experimental analysis shows that the characteristics of microcracks are very weak, the optimal extraction time is in the beginning of the heating stage, and the tensor algorithm can improve the SNR ratio of the microcrack effectively.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134601250","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
UHF RFID Sensor Array for Bending stress assessment 用于弯曲应力评估的超高频RFID传感器阵列
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962710
Dongming Su, G. Tian, B. Gao, Jun Zhang
{"title":"UHF RFID Sensor Array for Bending stress assessment","authors":"Dongming Su, G. Tian, B. Gao, Jun Zhang","doi":"10.1109/FENDT47723.2019.8962710","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962710","url":null,"abstract":"Ultra-high frequency (UHF) passive RFID sensing technology is a promising research direction in the field of combining structural health monitoring (SHM) and nondestructive testing (NDT) since the RFID passive tags meet the requirement of SHM with cheap, convenient and passive sensing. This paper investigates an UHF RFID sensor array to evaluate the deformation of a specimen due to bending stress. The interaction between tag arrays at different distances is discussed and the layout of tag sensor array is presented. In particular, the experiment of bending detection and the contrast validation of flexing sensor array are conducted. The relationship between the extracted eigenvalues from the RFID sensor array and bending deflection of the specimen is interpreted. Finally, the curvature of the sensor is compared with the characteristic value of tags in the array.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130896709","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: 5
A method for improving calibration accuracy of Multi-robot Base Frame 一种提高多机器人基架标定精度的方法
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962791
Wanxin Yang, Juan Hao, Canzhi Guo, X. Xu, Xinhao Zheng
{"title":"A method for improving calibration accuracy of Multi-robot Base Frame","authors":"Wanxin Yang, Juan Hao, Canzhi Guo, X. Xu, Xinhao Zheng","doi":"10.1109/FENDT47723.2019.8962791","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962791","url":null,"abstract":"The calibration of the relative positional relationship between the base frame of multiple robots is the basis of multi-robot collaborative work. Therefore, it is necessary to accurately measure the relative positional relationship. The calibration method based on the robot itself has the advantages of simple operation and low cost, but the teaching accuracy is difficult to be guaranteed and the calibration accuracy is low. The four- point calibration method proposed in this paper was based on the calibration method of the robot itself. Adopted the principle of homogenization error to improve the calibration accuracy. The ultrasonic scanning experiment proves that the method can reduce the calibration error to 1mm and can effectively improve the accuracy of automated ultrasonic testing.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126580798","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
Comparison of Morphology Characterization for Regular Cracks with Multi-mode Total Focusing Method 多模全聚焦法对规则裂纹形貌表征的比较
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962560
S. Jin, Chen-fei Liu, S. Shi, Zhongbing Luo, Chu Wang, Li Lin
{"title":"Comparison of Morphology Characterization for Regular Cracks with Multi-mode Total Focusing Method","authors":"S. Jin, Chen-fei Liu, S. Shi, Zhongbing Luo, Chu Wang, Li Lin","doi":"10.1109/FENDT47723.2019.8962560","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962560","url":null,"abstract":"The multi-mode total focusing method (MTFM) is used for characterization of crack morphology, whose imaging quality is closely related to crack orientation. In this paper, the signal acquisition was performed using the 39° wedge and 16-element linear array probe with center frequency of 10 MHz. The morphology of regular cracks was characterized and compared by MTFM imaging in direct, half-skip and full-skip modes, respectively. The established simulation model was a 9.0 mm thickness aluminum plate containing a series of regular bottom cracks, whose lengths were all 2.0 mm and orientation angles were 0°, ±15°, ±35° and ±60°, respectively. The simulated results showed that direct, half-skip and full-skip modes were suitable for morphology characterization of regular cracks with orientation angles of 35°, 0° and -35°, respectively. The quantitative errors of crack lengths and orientation angles were no more than 0.22 mm and 0.8°, respectively. The measurement errors in experiment were within 0.28 mm and 0.9° for crack lengths and orientation angles, being in good agreement with simulated results. On the basis, the increment of element pitch is helpful for enlarging receiving area of ultrasonic beam and characterization range for crack morphology.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124407459","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
Circuit-field coupled analysis of excitation performance of multi-layer spiral coil Electromagnetic Acoustic Transducer 多层螺旋线圈电磁声换能器激励性能的电路-场耦合分析
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962606
Qinchun Tang, Wenze Shi, Chao Lu, Weiwei Chen, Jinjie Cheng, Jin Zhang, Bin Chen, Yao Chen
{"title":"Circuit-field coupled analysis of excitation performance of multi-layer spiral coil Electromagnetic Acoustic Transducer","authors":"Qinchun Tang, Wenze Shi, Chao Lu, Weiwei Chen, Jinjie Cheng, Jin Zhang, Bin Chen, Yao Chen","doi":"10.1109/FENDT47723.2019.8962606","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962606","url":null,"abstract":"In the previously finite element and analytical model for the excitation process of electromagnetic acoustic transducer (EMAT), it is generally assumed that the EMAT coil is provided with a current of a limited amplitude. Meanwhile, pulse power amplifier, resistance of transmission line, impedance matching network and coil equivalent impedance are not taken into consideration. In this paper, an excitation equivalent circuit model for the EMAT is established, effects of the output voltage and output impedance of pulse power amplifier, impedance matching parameters and characteristics of the excitation coil on the EMAT conversion efficiency are considered. Based on experiments, influences of connecting mode (series or parallel) of multi-layer coil, coil conductor diameter and number of coil layers on the EMAT efficiency with various frequencies are studied. Results show that for the multi-layer spiral coil EMAT at 1MHz and 2MHz, it is better to use parallel connecting method. The EMAT efficiency is rapidly decreased with the increase of number of coil layer when spiral coils are connected in series. When the EMAT coil is perfectly matched, the output impedance of the pulse generator, resistance of transmission line and the EMAT dynamic coil impedance (number of layers, wire diameter, excitation frequency) also meet special conditions, the EMAT excitation efficiency can be maximized.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115243553","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
Probabilistic damage imaging of composite plates by air coupled Lamb waves 空气耦合兰姆波对复合材料板的概率损伤成像
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/fendt47723.2019.8962672
Junjie Chang, T. Wan
{"title":"Probabilistic damage imaging of composite plates by air coupled Lamb waves","authors":"Junjie Chang, T. Wan","doi":"10.1109/fendt47723.2019.8962672","DOIUrl":"https://doi.org/10.1109/fendt47723.2019.8962672","url":null,"abstract":"Lamb wave of air coupled ultrasound can quickly detect the area of composite laminates. For the impact damage of quasi-isotropic carbon fiber composite laminates, a probabilistic damage imaging method independent of velocity is presented. Firstly, air-coupled ultrasonic transducers are used to scan in two orthogonal directions to obtain energy damage factors at different positions. Based on the probabilistic damage theory, the pixel points of each path are damaged probabilistically to determine the damage index of all paths. Finally, the damage indexes in each scanning direction are fused and the threshold value is introduced to realize the imaging of impact damage. The experimental results show that the damage factor combined with probabilistic damage imaging can better realize the localization and reconstruction of impact damage, and the imaging accuracy can be further improved by introducing the threshold value.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127831727","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
Research on Phased Array Detection Technology of Inserted fillet weld 插入角焊缝相控阵检测技术研究
2019 Far East NDT New Technology & Application Forum (FENDT) Pub Date : 2019-06-01 DOI: 10.1109/FENDT47723.2019.8962772
Guoan Liang, Kai Zheng, Tian-peng Qiang, Xiangdong Ma, Zhong Xu, Xing Wu, Ya-dong Mao, Jun-hua He
{"title":"Research on Phased Array Detection Technology of Inserted fillet weld","authors":"Guoan Liang, Kai Zheng, Tian-peng Qiang, Xiangdong Ma, Zhong Xu, Xing Wu, Ya-dong Mao, Jun-hua He","doi":"10.1109/FENDT47723.2019.8962772","DOIUrl":"https://doi.org/10.1109/FENDT47723.2019.8962772","url":null,"abstract":"Influences of irregular welding area and curvature change of ultrasonic reflection position in insertion fillet weld make it impossible to distinguish defect wave from internal reflection wave effectively in conventional ultrasonic testing, which leads to missed detection and inaccurate location of defects. Ultrasound phased array can control the focus and deflection of sound beam by controlling the excitation time of each piezoelectric chip in phased array, so as to improve the detection efficiency and accuracy. The parameters of probe and scanning method of phased array are determined by simulation in this paper, and an ultrasonic phased array detection system with scanning device is set up to detect the embedded defects in the insertion fillet weld.. The test results verify the efficiency and accuracy of the ultrasonic phased array detection for such welds, which provides an effective method for defect detection of inserted fillet weld.","PeriodicalId":232572,"journal":{"name":"2019 Far East NDT New Technology & Application Forum (FENDT)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131350171","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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