Experimental examination of fatigue life of welded joint with stress concentration
Journal Title: Frattura ed Integrità Strutturale - Year 2016, Vol 10, Issue 36
Abstract
This paper presents results of experimental examinations of stress concentration influence to fatigue life of butt welded joints with K-groove, produced from the most frequently used structural steel S355J2+N. One group of experiments comprised examinations carried out on the K-groove specimens with stress concentrators of edged notch type. Specimens with short cracks (limited length of initial crack), defined on the basis of the experience from fracture mechanics by the three points bending examinations, have been examined according to standard for the determination of S-N curve, and aimed to determine fatigue strengths for different lengths of initial crack and Relationship between fatigue strength and crack length. Other group of experiments comprised examinations of specimens with edge notch, prepared in accordance with ASTM E 399 for three points bending, in order to establish regularity between crack growth and range of exerted stress intensity factor aimed to determine resistance of welded joint to initial crack growth, namely fatigue threshold (ΔKth).
Authors and Affiliations
Miodrag Arsic, Zoran Savic, Aleksandar Sedmak, Srdjan Bosnjak, Simon Sedmak
Keywords
Related Articles
- EP ID EP112280
- DOI 10.3221/IGF-ESIS.36.03
- Views 60
- Downloads 0
Influence of crack offset distance on the interaction of multiple cracks on the same side in a rectangular plate
In the present work finite element method has been employed to study the interaction of multiple cracks in a finite rectangular plate of unit thickness with cracks on the same side under uniaxial loading condition...
A simple beam model to analyse the durability of adhesively bondedtile floorings in presence of shrinkage
A simple beam model for the evaluation of tile debonding due to substrate shrinkage is presented.The tile-adhesive-substrate package is modeled as an Euler-Bernoulli beam laying on a two-layer elasticfoundation. An...
Atomistic modeling of different loading paths in single crystal copper and aluminum
Utilizing molecular dynamics (MD) integration model we have investigated some of the relevant physical processes caused by different loading paths at the atomic level in Cu and Al monocrystal specimen. Interaction...
Stress-state dependent cohesive model for fatigue crack growth
In the cohesive framework, a stress-state dependent cohesive model, combined with an irreversible damage parameter has been used in simulation of fatigue crack growth initiation and continued growth. The model is...
Studio del danneggiamento mediante tomografia in luce del sincrotrone: impatto di un cono d’ombra sulla qualità finale delle ricostruzioni
Un’accurata osservazione della geometria tridimensionale di cricche e difetti è necessaria per lo studio dei meccanismi alla base del processo di danneggiamento. I metodi convenzionali utilizzati a questo scopo sono dist...