Abstract
The paper presents a result of experimental tests of welded S355 specimens subjected to combined bending and torsion loading. In order to analyse how the fillet joints’ shape and the load ratio affect the crack growth, we selected two kinds of the fillet shape: concave and convex, and two load ratios, namely R = -1, 0. Rectangular specimens with stress concentrators in form of the external two-sided blunt notches and fillet welded joint were tested. The test results were compared to experiments conducted on solid specimens without welds.
Highlights
M any kinds of research are devoted at describing the behaviour of crack growth in structural component [1,2,3,4,5,6] and joints [7,8,9,10]
The aim of the present paper is to present fatigue crack growth results related to S355 steel joints, with and without fillet welds, subjected to combined bending and torsion loading
The highest values of a microhardness in the heat-affected zone (HAZ) occur close to the fusion boundary in the concave welds, these values are comparable to values in the convex welds [13]
Summary
M any kinds of research are devoted at describing the behaviour of crack growth in structural component [1,2,3,4,5,6] and joints [7,8,9,10]. In [11] the influence of various weld imperfection on fatigue crack propagation has been considered. The development of fatigue cracks in welded joints can be influenced by the load level and by its relationship to the mechanical properties of the material, as well as by the microstructure and the existence of internal stresses in the weld and in its heat affected zone [13,14,15,16]. The aim of the present paper is to present fatigue crack growth results related to S355 steel joints, with and without fillet welds, subjected to combined bending and torsion loading
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call