1. The problem statement, all variables and given/known data Square panel , elliptical hole, uniform pressure p in x direction. calc stress at end of minor axis. pt A L=40in p=10psi a=1in b=0.5 in t=0.2 in 2. Relevant equations i know that stress at end will be max stress multiplied by stress conc. factor. bt i dont know how to calc stress conc. factor for an elliptical hole 3. The attempt at a solution Kt = stress x (1 + 2b/a) is this correct?