ULTRA SONIC TESTING OF WELDJOINTS PREPARED AT DIFFERENT VOLTAGE AND CURRENT

There are several millions of weld joints made at every corner of the world. There are chances that safety may be ceased to exist because of some defects in the weld joints. The objective of this investigation was to verify the influence of current and voltage on porosity found inside weld joints and other visual defects. Non- Destructive testing was carried out for standard butt joint from Manual metal arc welding (stick welding) and Gas metal arc welding. Porosity was measured in terms of depth from the surface of weld joint. The results will be presented in this paper with interesting finding with test sample by different welding technique