Quote:
Originally Posted by 29od1
Any of you certified welders know what the reduction in material allowables is due to welding? We could do a quick axial and bending calculation on the frame and see if it's anywhere close to Fty. My guess is that with a good weld and a 3 ton load at the rear bumper, it should be no problem with a C20 frame.
At least the analytic calculations would stop the conjecture whether it will fail or not.
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Probably a fatigue crack propagation problem, which occurs at less than yield. If we could find guidance on reduction allowances, just multiply the allowable stress by the x sectional area of the C20 frame and compare to same calculation with a stock swb C10 frame and no allowance.