The anisotropic, heterogeneous and coarse granular structures of austenitic stainless steel welds lead to important disturbances of the ultrasonic propagation: beam skewing and splitting, attenuation, backscattering and spurious echoes. These disturbances have been studied by EDF R&D for a few years in order to improve the ultrasonic NDT in nuclear applications. In particular, a methodology for...

Welding is a very important part in the development and growth of industry because it has role engineering, repair construction. Shielded metal arc welding (SMAW) process joining two or more materials using wrapped electrode as heat energy to melt material. The purpose this study was determine effect defects that arise with current variations so optimal results obtained from 3 amperes were test...

The prediction of the weld bead geometry parameters is an important aspect welding processes due to it related strength welded joint. This research focuses on using statistical design techniques and a deep learning neural network predict shape shielded metal arc (SMAW), inert gas (MIG), tungsten (TIG) processes. With techniques, experiments were carried out obtain data for generating regression...

Stress relieving is a common practice among manufacturing codes for reducing the magnitude of residual stresses in welded, quenched, and tempered steel structures and pressure vessels. The present work investigates the effect of stress relieving at 480, 560, 620, and 680°C on the microstructure and mechanical properties of 20 mm ASTM A517 Gr. B steel plate weldments produced by shielded metal a...

The purpose of this study is to analyze the welding defects that occurring in SMAW (Shielded Metal Arc Welding) process. This used experimental method investigate various types electrodes and current. process ASTM A36 low carbon steel with specimen dimensions 8 mm thick, 80 wide, 100 long. was carried out an underhand position (1G) using a V-seam layer machine, which sliding adaptive two axis s...

The aim of this study concerns the effect multi-pass shielded metal arc welding (SMAW) on corrosion behavior CW6MC cast nickel alloy. Using optical and SEM techniques welded joint is analyzed. Vickers microhardness mapping potentiodynamic polarization in NaCl H2SO4 solutions are also evaluated. Both Laves phase NbC-type carbides identified base (BM) weld (WM) regions. main microstructural diffe...

This study aimed to analyze BKI Grade (KI-A) plate material using the pre-heat process determine tensile strength and hardness. The method involved welding with shielded metal arc (SMAW) type. variations used several temperatures, such as 50⁰C, 120⁰C, 220⁰C, without heat treatment. obtained specimen pre-heating had lowest of 442.64 MPa, 220⁰C highest average 450.11 MPa. result showed that was p...