THE EFFECT OF INCOMPLETE ROOT PENETRATION ON THE LOW CYCLE FATIGUE BEHAVIOUR OF T-BUTT WELDS
Concerning the low cycle fatigue test of defective welded joints, considerable number of studies have been carried out in the field of shipbuilding and mechanical engineering, but they are mainly in the case of low constant stress amplitude, and the number of cycles to failure is greater than about 10 sub 2. As for the estimation of plastic deformation capacity of steel frame structures subjected to seismic load, strain controlled tests where the number of cycles to failure is less than 100(especially less than 20) are necessary, but few have been reported so far. From this point of view, the monotonic tensile tests and the low cycle plastic fatigue tests under constant strain amplitude of T-type welded joints with defect were carried out in this paper as a fundamental step to estimate the plastic deformation capacity of steel frame structures. Also the fatigue characteristics are expressed in terms of the static fracture ductility or the uniform elongation obtained from the monotonic tensile tests.
- Presented at Commission XIII, 1980 Annual Assembly of the International Institute of Welding, Tokyo (February 1980).
International Institute of Welding,
- FUJIMOTO, M
- Izumi, M
- Publication Date: 1980
- Features: References;
- Pagination: 14 p.
- TRT Terms: Butt welds; Defects; Deformation curve; Fatigue tests; Joints (Engineering); Plastic deformation; Repeated loads; Weld tests; Welds
- Uncontrolled Terms: Weld defects; Welded joints
- Old TRIS Terms: Cyclic fatigue; Low cycle fatigue; Weld penetration
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00312191
- Record Type: Publication
- Report/Paper Numbers: IIW Doc. XIII-942-80Conf Paper
- Files: TRIS
- Created Date: Aug 27 1980 12:00AM