Thanks - the stress risers mentioned are on moving parts subject to repetitive fatigue (called creep in static metal design due to uniform loads).
Not sure how this applies to a product that is only subjected to periodic concentrated loads.
Interestingly the cited article also mentions the same type of failure as a result of pits. I guess that's not a concern for Busse (ever see a stripped INFI blade?).
"In time, corrosion pits may mar this smooth surface enough to permit fatigue cracking to begin"
Regardless I guess we'll never know since apparently Busse adds a radii to everything in spite of leaving fatigue crack inducing pits.
JYD #123 The great one formerly known as Architect.
I am now a fictional British television police officer (currently a Detective Sgt) at Thames Valley Station. My governor is Detective Inspector Fred Thursday and it’s 1969.
