Open AccessMismatch effect on fatigue crack propagation limit curves of GMAW joints made of S960QL and S960TM type base materials
Author(s) -
Haidar Faisal Helal Mobark,
János Lukács
Publication year - 2020
Publication title -
design of machines and structures
Language(s) - English
Resource type - Journals
eISSN - 2064-7522
pISSN - 1785-6892
DOI - 10.32972/dms.2020.004
Subject(s) - fatigue limit , materials science , welding , consumables , structural engineering , fracture mechanics , crack closure , base metal , composite material , engineering , marketing , business
Welded structures cannot be produced without imperfections, cracks or crack like defects. Among the structural steels, 960 MPa strength category represents a reliable application possibility. Consumables are also available, but the behaviour of mismatch types under cyclic loading condition is not yet clear. In order to know the fatigue crack propagation resistance of 960 MPa strength category steels and their gas metal arc welded joints fatigue crack growth tests were performed. The tests results were analysed and fatigue crack propagation limit curves were determined.