TY JOUR TI Technology for manufacturing test machine and specimens to study the defects effect on weld seams mechanical properties KW welding KW welding defects KW material fatigue KW mechanical testing KW shipbuilding steel JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Kozhukhar, E.. AU Ruban, A.R. PY 2025 IS 2025 PB Astrakhan State Technical University