The Open Mechanical Engineering Journal

2015, 9 : 1-6
Published online 2015 February 10. DOI: 10.2174/1874155X01509010001
Publisher ID: TOMEJ-9-1

Residual Static Strength of Tubular T-Joints with Fatigue Surface Cracks

Sheng-zhi Song and Jian-Jun Wei
the R&D Centre of Jiangsu Construction Safety and Disaster Mitigation, Jiangsu Jianzhu Institute, Xue Yuan Road, Xuzhou, Postcard: 221116, China.

ABSTRACT

To study the influence of surface fatigue cracks on the static strength of circular tubular T-joints, experimental tests on four full-scale circular tubular T-joints are carried out. Firstly, surface fatigue cracks are prefabricated by fatigue test in three circular tubular T-joints. Thereafter, experimental tests on the static strength of all the circular tubular T-joints with and without fatigue cracks under axial tension are carried out. Through the comparative analysis, the influences of the fatigue crack on the failure mode and the static strength of circular tubular T-joints are concluded.

Keywords:

Experimental study, fatigue surface cracks, residual static strength, tubular T-joint.