“…Phased array has developed well in the last several years, particularly for weld inspections to overcome the limitations of radiography inspections, and the importance of ultrasonic is rapidly replacing radiography worldwide especially automatic ultrasonic test (AUT) used phased arrays technique as the latest development in AUT and present major improvements over conventional multiprobe ultrasonics for gas pipeline girth weld & pressure vessel inspection respectively as reported by Michael and Ginzel [1], Moles and Noel [2].…”