IIW COMMISSION VC-ULTRASONICALLY BASED WELD INSPECTION

摘要

The HW is an active organization in the area of weld based topics. Within a structure of 15 independent commissions and another group of working committees, the HW gathers together leading people from the perspectives of fabrication, maintenance, and inspection to discuss and forward the state of the art in welding. Within this framework, Commission V is dedicated to quality assurance of welded forms. This paper will describe the current, the past and the expected future activities of Sub-commission VC, ultrasonic based weld inspection. The best known past activity in Sub-commission VC is the design and implementation of the IIW test block, which is used extensively in industry to set calibration parameters and ultrasonic sensitivity. Currently, the two main areas of focus are the publication of IIW Handbooks in the areas of inspection of austenitic welds and automated ultrasonic inspection (AUT). Austenitic and DMW weld inspection is of interest due to the difficult grain structures that can be encountered, and the resulting problems it causes for ultrasonic inspection. AUT inspection is also-of interest due to the large number of companies providing this service. Lastly, future areas of work are discussed, which include re-qualification of the IIW block to provide more uniform properties for setting inspection sensitivity and phased array inspection.