شماره ركورد كنفرانس :
3254
عنوان مقاله :
An expression for stress intensity factor of butt welded joint containing inclined lack of penetration (LOP) defects
Author/Authors :
َAkbar Jafari Department of Mechanical Engineering - Amirkabir University of Technology, Tehran , Mohsen Rezaeian Akbarzadeh Department of Mechanical Engineering - Amirkabir University of Technology, Tehran
كليدواژه :
Response surface method , Lack of penetration , Butt welded joint , Stress intensity factor
عنوان كنفرانس :
پنجمين كنفرلنس بين المللي قابليت اطمينان و ايمني
چكيده لاتين :
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.
