Conventionally, the quality of the weld is ascertained only after the welding has been completed through the use of NDT techniques. A lot of time, material and manpower is wasted before one comes to know about the soundness of the weld. These limitations can be overcome if the weld is continuously monitored in real time for the assessment of defects using appropriate NDE sensors. This paper hig...

BACKGROUND Metal Inert Gas (MIG) welding and Tungsten Inert Gas (TIG) welding are widely used for mild steel segments in basic metal industries. Pulmonary problems such as asthma, pulmonary inflammation, hyper-responsiveness of airways and higher susceptibility to infections are reported as the result of occupational exposure of welders to ozone and nitrogen oxides. Potent oxidizing agents like...

A new spectral processing technique designed for its application in the on-line detection and classification of arc-welding defects is presented in this paper. A non-invasive fiber sensor embedded within a TIG torch collects the plasma radiation originated during the welding process. The spectral information is then processed by means of two consecutive stages. A compression algorithm is first ...

316L stainless steel joined to mild is widespread in several applications reach a requested good association of mechanical properties at lower cost. The activating tungsten inert gas (ATIG) weld was carried out using modified flux composed 76.63% SiO2 + 13.37% Cr2O3 10% NaF meet standard recommendations terms limiting the root penetration. Modified optimal gave depth penetration 1.84 times grea...

In this paper, 8 mm thickness 2205 duplex stainless steel (DSS) plates were successfully welded using keyhole tungsten inert gas welding (K-TIG) welding, and numerical simulations performed applying the finite element method. Three models of combined heat source adopted to verify accuracy experiment. The process under different speeds simulated, temperature field, molten pool shape, thermal cyc...

The TIG welding process has shallow penetration. addition of activated flux can increase the depth penetration weld, which is called A-TIG welding, so this study to analyze effect type and current on penetration, hardness, microstructure, corrosion rate. This used SUS 304 A36 materials with a thickness 6 mm are welded using variations Fe2O3, Cr2O3 in strength 100 amperes 120 amperes. To find ou...