Will it be possible for someone to let me know on various methods that can be applied for OD Corrosion (Pitting type) where UT Readings cannot be carried out. Also which is the best method that we should go for??
Laser based techniques also becoming popular to image the pitting on the external surface. Both 3D structured light technique and Laser based techniques are emerging in innovation and software options that enable the user to calculate the burst pressure calculations with the reduced thickness quickly and effectively so end user can set the pressure limits or take a call on repair based on the results. Seikowave I have personally used and its a good tool to image the corrosion/ pitting on the external surface. However, to be successful in using this light based techniques over exposure of the test surface (due to sunlight) has to be eliminated.