Fatigue testing of welded joints by means of local criteria: a comparison between the fictitious notch radius–based criterion and the criterion involving strain energy density in a finite volume

2008 ◽  
Vol 22 (9) ◽  
pp. 635-640
Author(s):  
P. Lazzarin ◽  
F. Berto ◽  
D. Radaj
Keyword(s):  
Energy Density ◽  
Finite Volume ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Fatigue Testing ◽  
Notch Radius

Fatigue Strength of Three Dimensional Welded Joints: A Synthesis Based on the Strain Energy Density over a Control Volume

2007 ◽  
Vol 348-349 ◽  
pp. 413-416
Author(s):  
M. Zappalorto ◽  
Filippo Berto ◽  
Paolo Lazzarin
Keyword(s):  
Experimental Data ◽  
Energy Density ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Complex Geometry ◽  
Control Volume ◽  
Three Dimensional ◽  
Weld Toe ◽  
Weld Root

A recent approach based on the local strain energy density (SED) averaged over a given control volume is applied to well documented experimental data taken from the literature, all related to steel welded joints of complex geometry. This small size volume embraces the weld root or the weld toe, both regions modelled as sharp (zero notch radius) V-notches with different opening angles. The SED is evaluated from three-dimensional finite element models by using a circular sector with a radius equal to 0.28 mm. The data expressed in terms of the local energy fall in a scatter band recently reported in the literature, based on about 650 experimental data related to fillet welded joints made of structural steel with failures occurring at the weld toe or at the weld root.

scholarly journals Local strain energy density for the fatigue assessment of hot dip galvanized welded joints: some recent outcomes

2017 ◽  
Vol 11 (42) ◽  
pp. 205-213 ◽  
Author(s):  
M. Peron ◽  
S.M.J. Razavi ◽  
F. Berto ◽  
J. Torgersen ◽  
F. Mutignani
Keyword(s):  
Energy Density ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Local Strain ◽  
Fatigue Assessment
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