Experimental Validation on ASTM A516 Grade 70 Carbon Steel by Non-Destructive Testing

Welding is one type of erection process. It is process of joining by applying heat energy and molten metal used extensively in automobile industries, aircraft machine frames structural work ship building and various other fields. Physical properties of welds are affected by several factors. To produce satisfactory welds which fulfil the requirement of quality the integrity of quality control is important. To understand the various defects, their causes and remedies can help to improve higher quality and longer lasting welds. This report contains major information of surface irregularities and weld discontinuities. Non-destructive testing is the process conducting examination on any component (welds, casting bars, automobile etc.) without affecting its usefulness of component to detect discontinuities in component and physical properties of component. There are more than sixteen methods of NDT in metals, in this the most important onesVisual, Ultrasonic, radiography, magnetic particle testing and penetrant testing are discussed in detail. The experimental outputs are discussed and comparisons are made based on the cost, accuracy, safety, time consumption, etc. Based on these considerations conclusions and recommendations are made.