Ref: Shigley's mechanical engineering design
Ref: Roark's Formulas for Stress and Strain
However, I found both resources were only applicable for d/w <0.3
Why is it data can only be found in this specific range? The example I have has a value of 0.5 and is therefore outside the range so I am unsure how to proceed and what the implications are of it being outside the stress concentration factor range.
Any help is greatly appreciated, thanks