شماره ركورد كنفرانس :
4670
عنوان مقاله :
An expression for stress intensity factor of butt welded joint containing inclined lack of penetration (LOP) defects
پديدآورندگان :
Jafari Akbar aj68@aut.ac.ir aDepartment of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran; , Rezaeian Akbarzadeh Mohsen Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
كليدواژه :
Stress intensity factor , Butt welded joint , Lack of penetration , Response surface method
عنوان كنفرانس :
پنجمين كنفرانس بين المللي قابليت اطمينان و ايمني
چكيده فارسي :
In this paper, the stress intensity factor (SIF) expression for defected butt welded joint containing inclined lack of penetration (LOP) subject to far-field tensile stress is derived. Some of the standards such as ISO 5817, BS EN 25817, and EN 29692 have specified an acceptable range for the shape parameters. In this paper, the effect of these acceptable geometries on stress intensity factor (SIF) of butt welded joint is investigated through following steps: i) elastic analyses to predict crack tip stress intensity (KI, KII) and shape factors, ii) approximation of shape factors by Response Surface Method (RSM). These expressions provide design guidelines for butt welded joint containing unavoidable inclined lack of penetration (LOP) defects.
