Effect of Variables in Welding Technique on the Strength of Direct-Current Metal-Arc-Welded Joints in Aircraft Steel. 2 - Repeated-Stress Tests of Joints in SAE 4130 Seamless Steel Tubing
Abstract
A series of tests were made for the purpose of establishing the effects of several variables in welding technique on the fatigue strength of arc-welded joints in SAE 4130 seamless steel tubing. The variables included type of electrode, speed of welding, current, position, amount of preheat, and other factors which in turn controlled the weld contour, penetration, and depth of the heat-affected zone. A range of joint design was also investigated. Fatigue data showed that stress concentrations due to weld geometry were the predominating factors in determining endurance life for welds of normally acceptable aircraft quality. Previous concepts relative to the behavior of fillet and butt welds were confirmed, particularly in regard to the superiority of tapered and concave fillets and the deleterious effects of internal weld defects.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1948
- Accession Number
- ADB807262
Entities
People
- C. B. Voldrich
- E. E. Armstrong
Organizations
- Battelle Memorial Institute