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Fracture mechanics based assessment of fatigue of seam weld ends under shear loading

Shams, Ehsan and Malikoutsakis, Michail and Savaidis, Georg and Vormwald, Michael (2013):
Fracture mechanics based assessment of fatigue of seam weld ends under shear loading.
In: 3rd International Conference on Engineering against Failure (ICEAF III), Kos, Greece, 26.-28.06.2013, [Conference or Workshop Item]

Abstract

Stress intensity factors are calculated along the weld root for load carrying welded joints under shear loading. The value of the stress intensity factor increases towards the weld end points as expected. An extrapolation procedure is suggested for the determination of a weld end point associated stress intensity factor where the stress singularity is no longer of the crack front type. In the experimental part of this research fatigue testing of thin sheet plane and cylindrical specimens was performed. The fatigue cracks initiated at the weld end points. A weld-end life curve has been obtained which is expressed in terms of the weld end stress intensity factor range. The thin sheet results are compared to results of a thick sheet member of a motor truck to discuss the transferability of fatigue data for different geometrical items.

Item Type: Conference or Workshop Item
Erschienen: 2013
Creators: Shams, Ehsan and Malikoutsakis, Michail and Savaidis, Georg and Vormwald, Michael
Title: Fracture mechanics based assessment of fatigue of seam weld ends under shear loading
Language: English
Abstract:

Stress intensity factors are calculated along the weld root for load carrying welded joints under shear loading. The value of the stress intensity factor increases towards the weld end points as expected. An extrapolation procedure is suggested for the determination of a weld end point associated stress intensity factor where the stress singularity is no longer of the crack front type. In the experimental part of this research fatigue testing of thin sheet plane and cylindrical specimens was performed. The fatigue cracks initiated at the weld end points. A weld-end life curve has been obtained which is expressed in terms of the weld end stress intensity factor range. The thin sheet results are compared to results of a thick sheet member of a motor truck to discuss the transferability of fatigue data for different geometrical items.

Number: 37
Uncontrolled Keywords: weld end, shear loading, stress intensity factor, fatigue life
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Fachgebiet Werkstoffmechanik
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics
13 Department of Civil and Environmental Engineering Sciences
Event Title: 3rd International Conference on Engineering against Failure (ICEAF III)
Event Location: Kos, Greece
Event Dates: 26.-28.06.2013
Date Deposited: 02 Jul 2014 12:02
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