Jan 01, 2009 · For this reason fatigue strength assessment of welded joints is of great interest to engineers involved in structure design. Dealing with welding strength evaluation, a major problem is related to stress singularity arising at crack initiation points (toes or roots).
Development of Fatigue Life Improvement Technology of Experimental results revealed that fatigue life improves by around 42% compared to as-welded fatigue specimens by reducing the stress concentration at the weld toe and generating a metal structure finer than that of flux-cored arc welding (FCAW).
Yuen B.K.C., Taheri F., Gharghouri M. (2007) Experimental Investigation Into the Fatigue of Welded Stiffened 350Wt Steel Plates Using Neutron Diffraction Method. In:Gdoutos E.E. (eds) Experimental Analysis of Nano and Engineering Materials and Structures.
Fatigue - 1st EditionThe stress magnification effect of angular misalignment at butt welds; Stress interaction effects in fatigue a compendium of experimental findings; Fatigue of load-carrying fillet welded joints under multiaxial loading; Treatment of low stresses when applying Miners rule in the fatigue design of welded aluminium alloys; A stress intensity factor solution for root defects in fillet and
Fatigue Design Recommendations for Fillet Weld Joints - TWIG R Razmjoo (1994). An investigation into fatigue of fillet welded joints under rotating principal stress direction' Proc. 4th Int. Conf, on Biaxial/Multiaxial Fatigue, Paris. A Siljander (1997). On the evolution of multiaxial fatigue damage parameters. Welded High-Strength Steel Structures, EMAS Publishing, West Midlands, 113-126. J G Wylde (1988).
the grinding of fillet weld which was performed after welding. Residual stress created by shot peening, which is quite significant, is shown in Fig. 4. Fig. 3 Distribution of residual stress on Specimen #2 (welded joint), before and after the fatigue test The details of fatigue tests and results are shown in Table 5.
Figure 15 from Investigation into the Fatigue Strength of Fig. 15 Algorithm used to determine the angle of fatigue crack deviation. - "Investigation into the Fatigue Strength of Fillet Welded Assemblies of E36-4 Steel As a Function of the Penetration of the Weld Subjected to Tensile and Bending Loads Tests revealed"
Improvement in Fatigue Strength of Fillet Welds by Peening Background. Fatigue tests were carried out on specimens consisting of steel plates with transverse fillet welded attachments to investigate some aspects of the beneficial effects of hammer and shot peening the weld toe. It was found that, in contrast to the behaviour of longitudinal fillet welded details, steel strength (up to 824N/mm 2 yield) had no effect on the improvement in fatigue strength due to shot
May 01, 2001 · In such cases, it has been found that fatigue cracks initiate at the weld toe on the web in a region of combined bending and shear and propagate at right angles to the direction of maximum principal stress. , Principal stress directions change It is only relatively recently that a significant database from fatigue tests on welded joints under nonproportional loading, when the principal stress directions change during a load cycle, has become available. , , Consequently, current fatigue
Investigation into Mechanical Properties of High Strength Both constant and variable amplitude fatigue testing were carried out on the LTT filler welded joints to study the influence of the residual stress on the fatigue strength [7, 8]. Results show
Investigation of the reliability deterioration of ageing An investigation into the change of shape of fatigue cracks initiated at surface flaws. Central Electricity Generating Board, Research Division, Berkeley Nuclear Laboratories. Influence of the radius of curvature at the weld toe in the fatigue strength of fillet welded joints.