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Happy Hoosier

(9,597 posts)
6. Just a clarification...
Thu Oct 31, 2019, 09:56 AM
Oct 2019

If the part is made of aluminum (and I'd guess it is) then it WILL crack at some point. Aluminum is a metal that does not have a "fatigue limit." That means that with enough cycles, it will eventually develop fatigue fractures. The key is to design and manufacture the part so that the cycles associated with a fatigue fracture are never met during the service life of the part. But modelling this can be tricky and minor variations in manufacturing can dramatically affect this.

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