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How to Size the LoP for Bridge Rib-to-Deck Welds by Using Phased Array Ultrasonic Testing

Phased array ultrasonic testing (PAUT) is a very popular modern technology in nondestructive testing (NDT). The most advantageous aspect of PAUT is the visualization of the discontinuity on the part or weld to be inspected. This ultrasonic technique is composed of mainly two parts: (1) the ultrasonic probe that contains small packed piezoelectric crystals, and (2) the electronics that fire the crystals to shape the sound beam. The advantages of PAUT make it a very powerful tool for weld inspections. The purpose of this paper is to emphasize the effectiveness of PAUT on discontinuity sizing for rib-to-deck weldments of bridge steel structures.


BSI, 2018, BS EN 1090-2:2018 Execution of steel structures and aluminum structure: Technical requirements for steel structures, BSI Group, London, United Kingdom.

BSI, 2005, DIN EN 10025-2:2005 Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels, BSI Group, London, United Kingdom.

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