With the application of high-density polyethylene (HDPE) pipe with thick wall in nuclear power plant (NPP), great attention has been paid to the safety of the pipeline joints, which can be assessed by phased array ultrasonic testing (PAUT). PAUT creates constructive interference of acoustic waves to generate focused beams according to delay law based on time-of-flight. However, due to the existence of acoustic attenuation and dispersion, waveform distortion occurs when ultrasonic pulse propagates in HDPE, which will accumulate with the increase of propagation distance, and then results in imaging errors. In this paper, the relationship between acoustic attenuation and dispersion in HDPE was obtained by numerical simulation in Field II®, which can be verified by the experiment of our previous work. Then, the investigation of the waveform distortion revealed the linear relation between peak offset and propagation distance. Considering the relation, an improved delay law was proposed to increase the intensity of ultrasonic field. This improved delay law was compared with the conventional one by numerical simulation of ultrasonic field and PAUT experiments, which showed that the improved delay law could increase the image sensitivity.
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August 2019
Research-Article
An Improved Phased Array Ultrasonic Testing Technique for Thick-Wall Polyethylene Pipe Used in Nuclear Power Plant
Yinkang Qin,
Yinkang Qin
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: qinyinkang@zju.edu.cn
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: qinyinkang@zju.edu.cn
Search for other works by this author on:
Jianfeng Shi,
Jianfeng Shi
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
Engineering Research Center of High Pressure
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China
e-mail: shijianfeng@zju.edu.cn
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China
e-mail: shijianfeng@zju.edu.cn
1Corresponding author.
Search for other works by this author on:
Jinyang Zheng,
Jinyang Zheng
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
Engineering Research Center of High Pressure
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China;
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China;
State Key Laboratory of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: jyzh@zju.edu.cn
Transmission and Control,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: jyzh@zju.edu.cn
Search for other works by this author on:
Dongsheng Hou,
Dongsheng Hou
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: houdongsheng@zju.edu.cn
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: houdongsheng@zju.edu.cn
Search for other works by this author on:
Weican Guo
Weican Guo
Zhejiang Provincial Special Equipment
Inspection and Research Institute,
Key Laboratory of Special Equipment Safety
Testing Technology of Zhejiang Province,
Hangzhou, Zhejiang 310020, China
e-mail: gwcndt@126.com
Inspection and Research Institute,
Key Laboratory of Special Equipment Safety
Testing Technology of Zhejiang Province,
Hangzhou, Zhejiang 310020, China
e-mail: gwcndt@126.com
Search for other works by this author on:
Yinkang Qin
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: qinyinkang@zju.edu.cn
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: qinyinkang@zju.edu.cn
Jianfeng Shi
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
Engineering Research Center of High Pressure
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China
e-mail: shijianfeng@zju.edu.cn
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China
e-mail: shijianfeng@zju.edu.cn
Jinyang Zheng
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China;
Engineering Research Center of High Pressure
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China;
Process Equipment and Safety,
Ministry of Education,
Hangzhou, Zhejiang 310027, China;
State Key Laboratory of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: jyzh@zju.edu.cn
Transmission and Control,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: jyzh@zju.edu.cn
Dongsheng Hou
Institute of Process Equipment,
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: houdongsheng@zju.edu.cn
College of Energy Engineering,
Zhejiang University,
Hangzhou, Zhejiang 310027, China
e-mail: houdongsheng@zju.edu.cn
Weican Guo
Zhejiang Provincial Special Equipment
Inspection and Research Institute,
Key Laboratory of Special Equipment Safety
Testing Technology of Zhejiang Province,
Hangzhou, Zhejiang 310020, China
e-mail: gwcndt@126.com
Inspection and Research Institute,
Key Laboratory of Special Equipment Safety
Testing Technology of Zhejiang Province,
Hangzhou, Zhejiang 310020, China
e-mail: gwcndt@126.com
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received November 4, 2018; final manuscript received March 29, 2019; published online May 8, 2019. Editor: Young W. Kwon.
J. Pressure Vessel Technol. Aug 2019, 141(4): 041403 (9 pages)
Published Online: May 8, 2019
Article history
Received:
November 4, 2018
Revised:
March 29, 2019
Citation
Qin, Y., Shi, J., Zheng, J., Hou, D., and Guo, W. (May 8, 2019). "An Improved Phased Array Ultrasonic Testing Technique for Thick-Wall Polyethylene Pipe Used in Nuclear Power Plant." ASME. J. Pressure Vessel Technol. August 2019; 141(4): 041403. https://doi.org/10.1115/1.4043384
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