The outcome of a welding process relies on various factors, one which is the heat input at welded joint. Consequently, thermal conductivity plates to be holds significant importance, just like selection technique. This research investigates impact applying Metal Active Gas (MAG) and Submerged Arc Welding (SAW) methods differently coated (shop-primer) plates, as well un-coated S235JR structural ...

In this study, Al-Mg-Si alloy AA6061-T6 plates were joined in a seawater environment using the Submerged Friction Stir Welding (SFSW) technique, and process parameters optimized Taguchi L9 orthogonal arrays (OA). The considered tool rotational speed, transverse pin geometry. MINITAB-17 software was used to analyze responses signal-to-noise (S/N) ratio analysis of variance (ANOVA). optimum for t...

In order to investigate the effect of gas cutting during removal restraining jig on deformation after submerged arc welding, authors have conducted experiments a series processes using constraint plates in test specimen modeling deck steel bridge. this paper, an Idealized explicit FEM developed by is applied detail factors that cause springback plates. A welding and were modeled, then three-dim...

Maritime Platforms Division within DSTO is currently studying the science and technology of autonomous underwater vehicles for defence applications. Part of this work involves a study of the hydrodynamics and manoeuvrability of these vehicles and the development of methods to determine the hydrodynamic coefficients of submerged bodies as a function of their shape. This report describes the appl...

Wave energy converters (WECs) often include a submerged heave reaction plate located at a depth where the surrounding water is minimally disturbed by the passing surface waves. Heave plates provide a relatively stationary and artificially massive body to which WECs transfer the reactionary forces generated as their power-takeoffs (PTOs) resist the motion induced by the incoming waves. To date l...

Tetraacetylphytosphingosine (TAPS) formation by the F-60-10 mating type strain of the yeast Hansenula ciferrii, previously observed on agar plates, has been shown to take place in submerged cultures. The optimal conditions for TAPS formation, and the correlation of TAPS production and sugar utilization under aerobic conditions, were studied in 10-liter fermentors. For each gram of glucose consu...

Original scientific paper In a submerged arc welding process, the concept of temperature distribution is essential in order to control the HAZ (heat-affected zone) dimensions and get the required bead size and quality. In this paper, an analytical solution for moving heat source with Gaussian distribution of inside volume of central conicoidal shape is derived. Heat transfer in welded plates du...

This paper looks at the challenges confronting plate tectonics— the ruling paradigm in the earth sciences. The classical model of thin lithospheric plates moving over a global asthenosphere is shown to be implausible. Evidence is presented that appears to contradict continental drift, seafloor spreading, and subduction, as well as the claim that the oceanic crust is relatively young. The proble...

The entomopathogenic fungus Beauveria (Cordyceps) bassiana holds much promise as a pest biological control agent. B. bassiana produces at least three in vitro single cell infectious propagules, including aerial conidia, vegetative cells termed blastospores and submerged conidia, that display different morphological, biochemical and virulence properties. Populations of aerial conidia, blastospor...