Analysis of Defect Height Test with UT in Weld Inspection

Weld is normally evaluated with defect length and echo height in UT inspection. However, it is requested that evaluation shall be carried out considering echo height, defect length and defect height, because of special requirement in part of offshore project. This paper will introduce the height test methods recommended in American standard, and analyze the applicability and accuracy. It will also provide reference for NDT colleague.