PPRuNe Forums - View Single Post - Paul Phelan’s article in The Australian on Fri 10 Aug.
Old 18th Aug 2007, 15:55
  #34 (permalink)  
Join Date: Oct 2005
Location: somewhere in Oz
Age: 49
Posts: 911
Originally Posted by Sunfish View Post
But with my engineers hat on...

...The fatigue life of a chunk of Aluminium alloy is a function of its entire stress history from new. That is the integral of load applied times length of time applied.
Perhaps you should rephrase or hand your engineer's hat back in Sunfish. Fatigue strength is more about stress cycles and less about static load.

If the Shrike really was designed to run at the ragged edge of fatigue strength design factors such that a 10% MTOW increase would push it over the edge, then surely it would have been fitted with some kind of fatigue index device, a la Bulldogs etc?

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