Experimental and numerical evaluation of the fatigue behaviour in a welded joint

27th International Conference on CADCAM, Robotics and Factories of the Future 2014

工业技术;机械制造

Almaguer, P.^1 ; Estrada, R.^1

Centro de Estudios CADCAM, Facultad de Ingeniería, Universidad de Holguín, Ave. XX Aniversario s/n, Piedra Blanca. Holguín. GP 57. CP 80100, Cuba^1

关键词: AISI 1015;    Butt welded joint;    Confidence bands;    E6013;    Fatigue behaviour;    Fatigue specimen;    S-N curve;    Universal testing machines;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/65/1/012013/pdf
DOI  :  10.1088/1757-899X/65/1/012013

学科分类：工业工程学

来源: IOP

【 摘 要 】

Welded joints are an important part in structures. For this reason, it is always necessary to know the behaviour of them under cyclic loads. In this paper a S-N curve of a butt welded joint of the AISI 1015 steel and Cuban manufacturing E6013 electrode is showed. Fatigue tests were made in an universal testing machine MTS810. The stress ratio used in the test was 0,1. Flaws in the fatigue specimens were characterized by means of optical and scanning electron microscopy. SolidWorks 2013 software was used to modeling the specimens geometry, while to simulate the fatigue behaviour Simulation was used. The joint fatigue limit is 178 MPa, and a cut point at 2 039 093 cycles. Some points of the simulations are inside of the 95% confidence band.