Laser-ultrasonic inspection of hybrid laser-arc welded HSLA-65 steel

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Proceedings title40th Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing
Series titleAIP Conference Proceedings; no. 1581
Conference40th review of progress in quantitative nondestructive evaluation (QNDE 2013), July 21-26, 2013, Baltimore, MI, USA
Pages405411; # of pages: 7
AbstractThe hybrid laser-arc welding (HLAW) process is a relatively low heat input joining technology that combines the synergistic qualities of both the high energy density laser beam for deep penetration and the arc for wide fit-up gap tolerance. This process is especially suitable for the shipbuilding industry where thick-gauge section, long steel plates have been widely used in a butt joint configuration. In this study, preliminary exploration was carried out to detect and visualize the welding defects using laser ultrasonics combined with the synthetic aperture focusing technique (SAFT). Results obtained on 9.3 mm thick butt-welded HSLA-65 steel plates indicated that the laser-ultrasonic SAFT inspection technique can successfully detect and visualize the presence of porosity, lack of fusion and internal crack defects. This was further confirmed by X-ray digital radiography and metallography. The results obtained clearly show the potential of using the laser-ultrasonic technology for the automated inspection of hybrid laser-arc welds.
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AffiliationNational Research Council Canada; Energy, Mining and Environment; Aerospace
Peer reviewedYes
NRC numberNRCC 53240
NPARC number21272075
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Record identifierd6bd12fb-ee35-4870-a268-56947d47c6a3
Record created2014-06-18
Record modified2017-04-11
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