In order to clarify the relationship between shielding gas flow and shieldability during a lap-fillet arc welding, oxygen concentration measurements on water-cooled copper which imitated lap-joint in tungsten inert welding were conducted. Moreover, high-speed plasma visualized by schlieren method observation using tube electrode xenon gas, respectively. As result, low-oxygen region, where was l...

Introduction: Unwanted exposure of ionizing radiation may result in carcinogenesis, cell mutations, and organ failure. High-atomic number elements such as lead, tungsten, bismuth have been traditionally used for radiation protection. Theoretical and practical studies have shown that a variety of shielding materials e.g. polymer composites (PCs) can be used for attenuation of th...