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Abstract
Automated weld deposition coupled with the real-time robotic Non-Destructive Evaluation (NDE) is used in this paper. For performance verification of the in-process inspection system, an intentionally embedded defect, a tungsten rod, is introduced into the multi-pass weld. A partially-filled groove (staircase) sample is also manufactured and ultrasonically tested to calibrate the real-time inspection implemented on all seven layers of the weld which are deposited progressively. The tungsten rod is successfully detected in the real-time NDE of the deposited position. The same robotic inspection system was then used to continuously monitor an intentionally-manufactured crack for 20 h. The crack was initiated 22 min after the weld ended and it grew quickly within the next 1.5 h. The crack growth stopped approximately after 2 h and no considerable change in the reflection signal was detected for the next 18 h of monitoring.
Original language | English |
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Article number | 108655 |
Number of pages | 12 |
Journal | Materials and Design |
Volume | 191 |
Early online date | 19 Mar 2020 |
DOIs | |
Publication status | Published - 30 Jun 2020 |
Keywords
- crack growth monitoring
- ultrasonic phased array
- in-process inspection
- robotic NDE
- intentionally manufactured weld defects
- robotic welding
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New Wire Additive Manufacture- NEWAM
Pierce, G., Gachagan, A. & MacLeod, C. N.
EPSRC (Engineering and Physical Sciences Research Council)
25/06/18 → 24/06/23
Project: Research
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Robotic Wire + Arc Additive Manufacture cell
Pierce, G., Gachagan, A., Ion, W. & MacLeod, C. N.
EPSRC (Engineering and Physical Sciences Research Council)
1/07/17 → 31/03/21
Project: Research