Title:
ULTRASONIC DETECTION AND LOCATING METHOD AND DEVICE BASED ON TOFD AND PHASED ARRAY
Document Type and Number:
WIPO Patent Application WO/2016/155403
Kind Code:
A1
Abstract:
An ultrasonic detection and locating method and device based on TOFD and a phased array. The device comprises a TOFD detection unit (10) and a phased array detection unit (20). The TOFD detection unit (10) is used for scanning welded seams by using a TOFD ultrasonic detection method, so as to determine the position of a defect. The phased array detection unit (20) is used for scanning welded seams near the determined defect position by using a phased array ultrasonic detection method, identifying a defect of a size exceeding a preset size threshold, and locating the identified defect. Position information of a defect in a horizontal direction and a depth direction can be accurately determined by means of phased array ultrasonic detection; during location in cooperation with TOFD detection, a defect of a welded seam is accurately located by using TOFD scanning serving as a main method and phased array scanning serving as an auxiliary method, thereby overcoming the problems of poor locating precision of TOFD scanning and failure to detect a transverse defect during non-parallel scanning.
Inventors:
WANG YUEYIN (CN)
Application Number:
PCT/CN2016/070606
Publication Date:
October 06, 2016
Filing Date:
January 11, 2016
Export Citation:
Assignee:
SENSE ENG SERVICES LTD (CN)
International Classes:
G01N29/04
Domestic Patent References:
| WO2014062467A9 | 2014-11-06 |
Foreign References:
| CN104792866A | 2015-07-22 | |||
| CN104439747A | 2015-03-25 | |||
| CN102207488A | 2011-10-05 | |||
| CN101614704A | 2009-12-30 | |||
| EP2073003A1 | 2009-06-24 | |||
| CN103901104A | 2014-07-02 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
北京品源专利代理有限公司 (CN)
北京品源专利代理有限公司 (CN)
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