پديدآورندگان :
Kolooshani S. H. MSc student, Department of Mechanical Engineering, Najafabad branch, Islamic Azad University, Najafabad, Iran , Atrian A. amiratrian@gmail.com Assistant Professor, Department of Mechanical Engineering, Najafabad branch, Islamic Azad University , Najafabad, Iran; , Mohseni E. Industrial Advisor, National Iranian Gas Company, Isfahan, Iran
كليدواژه :
Failure Assessment Diagram (FAD) , E7010 , P1welding electrode , Fracture toughness , Crack Tip Opening Displacement (CTOD) , Stress intensity factor.
چكيده فارسي :
In the present research, fracture resistance of three different cellulosic welding electrodes of type E7010 and E7010-P1 with variant chemical compositions have been investigated at temperature of 25oC. The assessment is made based on Failure Assessment Diagram (FAD) method in accordance with BS 7910-2015 standard. The mechanical and fracture toughness properties of weld material have been determined carrying out all weld metal tensile test as well as CTOD fracture toughness test. The results are then used for finite element (FE) simulations in Abaqus commercial software to compute stress intensity factor along the crack front in the weld material.These results are then used to plot FAD curves and assessment points for each welding electrode to evaluate the existing crack in simulation. The analysis reveals that the presence of different amount of Mn in the weld metal influences directly the resistance to fracture in weld metal at moderate temperature applications.
