The variety of vision inspection systems for welding defects in the present manufacturing scenario is needed for overcoming certain limitations such as the problem of inaccuracy in the images, non-uniformed illumination, noise and deficient contrast, and confusion in defects if they occur in the same spot at the surface and subsurface. Hence, it is imperative to design a new vision inspection s...

The full-scale Sector Model Project, which was initiated in 1995 as one of the Large Seven ITER R&D Projects, completed all R&D activities planned in the ITER-EDA period with the joint effort of the ITER Joint Central Team (JCT), the Japanese, the Russian Federation (RF) and the United States (US) Home Teams. The fabrication of a full-scale 18 toroidal sector, which is composed of two 9 sectors...

Infrared Thermography is an advanced Non Destructive Evaluation technique based on the detection of infrared radiation. It is best suited for online weld monitoring to produce defect free welds. The most important step involved in online weld monitoring is to develop an automated algorithm for weld defect detection and quantification. Incomplete Penetration occurs when penetration of the weld m...

Austenitic stainless steels, widely used in food processing, undergo microstructural changes during welding, resulting in three distinctive zones: weld metal, heat-affected zone, and base metal. This research was conducted to determine the attachment of Listeria monocytogenes in these three zones before and after exposure to a corrosive environment. All experiments were done with tungsten inert...

The occurrence of paroxysmal narcotic episodes including psychotic-like symptoms in divers participating to experimental deep diving programs with various gas mixtures has constituted, beyond the classical symptoms of the high-pressure neurological syndrome, the major limitation for deep diving. With the development of new saturation deep diving programs and experiments by the eastern nations, ...

Activated tungsten inert gas welding (ATIG) is a new approach to Tungsten Inert Gas (TIG) that has the potential improve weld penetration. This paper investigates effect of micro and nanoparticle size oxide flux during TIG Hastelloy C-22. The SiO<sub>2</sub> Al<sub>2</sub>O<sub>3</sub> fluxes in terms particle thermal stability on surface appearance, bead geo...

Automated and intelligent classification of defects can improve productivity, quality, safety various welded components used in industries. This study presents a transfer learning approach for accurate tungsten inert gas (TIG) welding while joining stainless steel parts. In this approach, eight pre-trained deep models (VGG16, VGG19, ResNet50, InceptionV3, InceptionResNetV2, Xception, MobileNetV...

This research paper presents hardness, structure and tensile strength analysis of 1460 alloy Al-Cu-Li system, welded joints made by Tungsten Inert Gas (TIG) welding Friction Stir Welding (FSW). Characteristics acoustic noise at the operator workplace during mechanized TIG FSW aluminium-lithium with purpose to develop recommendations for improvement health safety processes were studied. Analyzin...