Non-Destructive Evaluation of Launch Tube Welds with Radiography

The non-destructive testing of launch tube weld with radiography was investigated and evaluated with AWS D1.1 standard. The paper started with preparation of launch tube and radiographic inspection. X-Ray inspection then was done and gotten the result. The judgment of inspection results were concluded by certified person and finally, the evaluation with AWS D1.1 standard was conducted as well. The result shown that weld position P1 was not conformed to AWS D1.1 which allowed size of incomplete penetration did not exceed 4 mm. The other welds were corresponded to as mentioned standard. Additionally, the corrective actions for incomplete penetration either provided for future actions.




References:
[1] The Materials Information Company, ASM Handbook Vol.17
Nondestructive Evaluation and Quality Control. 1998
[2] P. Hayward, "Radiography of welds using Selenium 75, IR 192 and XRays",
12th A-PCNDT, New Zealand, 2006.
[3] T.W. Liao, "Detection of welding flaws from radiographic images with
fuzzy clustering methods", Fuzzy Sets and Systems, Vol.108, 1996, pp.
145-158.
[4] R. R. da Silva et al, "State-of-the-Art of Weld Seam Inspection by
Radiographic Testing: Part I - Image Processing," Document
Information, unpublished.
[5] ASM Metals Handbook Vol.6 Welding, Brazing, and Soldering.