FATIGUE AND STATIC TESTS OF FILLET WELDS,
Abstract
A large amount of scatter was encountered in the tee fillet weld tests; however, the average fatigue strength of the specimens prepared with the E7016 electrode was about 10 per cent greater than that of the specimens prepared with the E6010 electrode. All of the E7016 joints had fatigue strengths which were significantly greater than the exceptionally low fatigue strengths of some of the E6010 joints. The exceptionally low fatigue strengths of some of the specimens prepared with the E6010 electrode appeared to be caused by an abnormally large amount of porosity in the weld metal. The E7016 welds were relatively free from porosity. The tee fillet joints produced with the low hydrogen electrodes conforming to the Military Specification Mil-E-986A (Mil 180) had an average fatigue strength which was about 10 per cent greater than the average fatigue strength of the E7016 joints and about 25 per cent greater than that of the E6010 joints. Preheating to 300 deg. F. had little effect on the E6010 joints, but increased the average fatigue strength of the E7016 joints about 10 per cent so that they performed about as well as the Mil 180 specimens. Removal of the paper spacers prior to testing decreased the average fatigue strength about 15 per cent. The ultimate strengths of the statically tested tee fillet specimens varied from 58,000 psi to 63,200 psi on the throat of the weld. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1954
- Accession Number
- AD0627061
Entities
People
- G. E. Nordmark
- L. A. Harris
Organizations
- University of Illinois Urbana–Champaign