Notch stress intensity factors and fatigue strength of aluminium and steel welded joints

Lazzarin, P.; Livieri, Paolo

doi:10.1016/s0142-1123(00)00086-4

Cited by 191 publications

(136 citation statements)

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“…Atzori et al investigated the possibility of unifying different criteria regarding the fatigue strength of welded joints [2]. Lazzarin and Livieri summarized the fatigue strength of aluminum welded joints with different geometries and thicknesses in a single scatter band by using a notch stress intensity factor-(N-SIF-) based approach [3]. In 2004, Lazzarin et al found that the critical radius R-C was approximately 0.40 mm for welded joints made of Fe E 460 steel and approximately 0.10 mm for joints made of AlSi1MgMn alloy under high-cycle fatigue conditions [4].…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis and Experimental Study on Strength Optimization of a Plug‐In Oil Hose Joint

Chang

Guo

Zhang

et al. 2018

Advances in Materials Science and Engineering

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A plug-in oil hose joint is used as the research object in this study. Aimed at the problem of pipeline breakage due to insufficient strength of the joint during the process of oil transportation on the sea, a three-dimensional geometric model of the joint is constructed according to the structural characteristics of the plug-in joint. e mechanical properties of the plug-in hose joint were studied by numerical simulations and field experiments. e strength of the joint was optimized by applying materials with different properties and adjusting the circular angle of the joint. e tensile strength test results of the plug-in oil hose joint are consistent with the theoretical analysis, which shows that the method proposed in this paper can effectively improve the tensile strength of the oil hose joint. It is of great significance to expand the scope of the plug-in connector and ensure the safe and stable use of the hose system.

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Section: Introductionmentioning

confidence: 99%

Simulation Analysis and Experimental Study on Strength Optimization of a Plug‐In Oil Hose Joint

Chang

Guo

Zhang

et al. 2018

Advances in Materials Science and Engineering

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“…Starting from Williams' research [6], several works were written about the effect of local stress field rising from singularities, especially on fatigue strength of welded joints, that can be quantified by means of local Strain Energy Density criterion (SED) averaged over a control volume of a critical radius RC [7][8][9][10][11] or Notch Stress Intensity Factor criterion (NSIFs) [12][13][14][15][16]. Intensity and distribution of residual stresses are difficult to be quantified near the weld toe, and, moreover, residual stresses are related to welding parameters, geometry, clamping conditions, applied stress and number of cycles.…”

Section: Introductionmentioning

confidence: 99%

The fatigue behavior of V-notches in presence of residual stresses: recent developments and future outcomes

Ferro

Peron

Razavi

et al. 2017

Frattura Ed Integrità Strutturale

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ABSTRACT. Residual stresses, arising from welding processes or nonhomogeneous plastic deformations, broadly influence the high cycle fatigue behavior of mechanical components. The presence of V-notches leads to singular residual stresses ahead of the notch tip and the asymptotic stress field can be described by the notch stress intensity factor (NSIF). However, plastic effects induce redistribution of residual stresses during cyclic loading and this variation is accounted in several numerical models developed for the calculation of the residual NSIFs. Due to the development of these models, the fascinating issue of predicting the fatigue strength of pre-stressed notched components has gained widely attention by the researchers and new approaches were recently developed and some of them are here reviewed. KEYWORDS.High cycle fatigue; Residual stress; V-notch; Fatigue strength.Citation: Ferro, P., Peron, M., Razavi, S.M.J, Berto, F., Torgesen, J., The fatigue behavior of V-notches in presence of residual stresses: recent developments and future outcomes, Frattura ed Integrità Strutturale, 42 (2017) 189-195.

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“…To use both the hot-spot approach and the considered local stress methods to post-process the experimental data being selected, a number of linear-elastic FE models was solved using commercial FE code ANSYS®. The N-SIF approach was applied also by using the formulas derived by Lazzarin and Tovo by post-processing the results from a large number of linearelastic FE models, with these formulas allowing the N-SIF range, ∆KI, to be estimated directly for standard welded geometries [16,17,22,23]. Finally, the N-SIF master curve…”

mentioning

confidence: 99%

On the accuracy of nominal, structural, and local stress based approaches in designing aluminium welded joints against fatigue

Zamzami

Susmel

2017

International Journal of Fatigue

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Notch stress intensity factors and fatigue strength of aluminium and steel welded joints

Cited by 191 publications

References 20 publications

Simulation Analysis and Experimental Study on Strength Optimization of a Plug‐In Oil Hose Joint

Simulation Analysis and Experimental Study on Strength Optimization of a Plug‐In Oil Hose Joint

The fatigue behavior of V-notches in presence of residual stresses: recent developments and future outcomes

On the accuracy of nominal, structural, and local stress based approaches in designing aluminium welded joints against fatigue

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