Fatigue life prediction for 6261-T6 aluminium alloy I-beams with welded cover plates
Abstract
The fatigue strength data were acquired in bend from some 50 extruded 6261 aluminum alloy I-beams with cover plates welded to them. The cover plates were rectangular, oval or rhomboid in shape with either welded or unwelded transverse ends. The data from stress range versus number of cycles diagrams (S-N diagrams) were compared with design curves from British Standard (BS) CP 118 : 1969 and BS 8118 Part 1 : 1991. An S-N diagram element analysis of a model cover plate/I beam geometry was linked with other growth rate data, to provide a life prediction S-N curve a Paris law integration. Good agreement was found between the results from the model and the experimental data.
- Publication:
-
Technical Research Centre of Finland, Fatigue Design 1992, Volume 1
- Pub Date:
- July 1992
- Bibcode:
- 1992trcf....1..161J
- Keywords:
-
- Aluminum Alloys;
- Fatigue Life;
- I Beams;
- S-N Diagrams;
- Weld Strength;
- Crack Initiation;
- Crack Propagation;
- Evaluation;
- Finite Element Method;
- Iodine;
- Welded Structures;
- Structural Mechanics