Nondestructive Testing Method for Welding Quality in Key Parts of Ocean-going Ships

Abstract

Tang, F.D. and Yu, Y.F., 2020. Nondestructive testing method for welding quality in key parts of oceangoing ships. In: Al-Tarawneh, O. and Megahed, A. (eds.), Recent Developments of Port, Marine, and Ocean Engineering. Journal of Coastal Research, Special Issue No. 110, pp. 91–94. Coconut Creek (Florida), ISSN 0749-0208.Welding technology is widely used in the manufacture and production of structural parts of ocean-going ships. The quality of welding is crucial to the safety of ocean-going ships. This paper attempts to study the NDT methods for welding quality in the key parts of ocean-going ships. To this end, it first summarizes several typical defects that are common in key parts of ocean-going ships, and selects the butt welds on the deck as the research objects. Then, the conventional ultrasonic testing (UT), phased array ultrasonic testing (PAUT), and radiographic testing (RT) were used to conduct the NDT testing on the test plates. Finally, a comparative analysis was conducted for the test results of these three methods. The research results show that like the UT and RT methods, the PAUT can detect all defects, and the qualitative results are consistent; except for incompletely fused defects, its other testing results are better than the UT and RT, verifying the feasibility of the PAUT. The research findings enrich the practical research results of the PAUT in ship welding quality inspection, and provide an effective reference for the promotion of this testing method in marine ship welding quality.