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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jian Li Xianglin Zhan Shijiu Jin |
| Copyright Year | 2009 |
| Description | Author affiliation: College of Aeronautical Automation, Civil Aviation University of China, No 2898, Jinbei Road, Tianjin, China (Xianglin Zhan) || State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, No 92, Weijin Road, Tianjin, China (Jian Li; Shijiu Jin) |
| Abstract | Traditional ultrasonic testing system has fixed focus, which is burdensome for layer inspection of welds because different layer needs different steering angle and focus ultrasonic beam to inspect. Ultrasonic phased array testing instrument can electronically steer and focus the transmission ultrasonic beams. This ability makes it very advantageous in automatic nondestructive testing in industrial field. In this article, an automatic flaw detection method on pipeline girth welds is researched and the ultrasonic phased array testing instrument is developed. Firstly, flaw detection principle of ultrasonic phased array system on girth welds and the mathematical model of the linear phased array transducer are exposed, which are basis of delay control in hardware design. Then, multi-channel acquisition system, connected to the linear ultrasonic phased array transducer is described. The hardware of single acoustic channel and the signal processing are introduced. Precise delay control of each element in the transducer is realized. Experiment results validate the good performances of ultrasonic transmission and echo composition capabilities of the system. It can be extended to automatic flaw inspection in other relative industrial fields. |
| File Size | 167660 |
| File Format | |
| ISBN | 9781424438631 |
| DOI | 10.1109/ICEMI.2009.5274279 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-08-16 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Acoustic transducers Welding Instruments Pipelines Ultrasonic transducer arrays Inspection ultrasonic Phase detection phased array system Phased arrays Ultrasonic transducers nondestructive testing flaw detection Acoustic beams |
| Content Type | Text |
| Resource Type | Article |
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