Steel, Al etc fatique
Steel, Al etc fatique
(OP)
If memory serves the higher the heat treated strength of steel the more knotch sensitive it is, and is also more sensitive to low cycle fatique. How does Aluminum compair to different alloys and hardness of steels?
I know in the aircraft parts world we strive to keep down the stress risers on both types of materials. Is it really that important with Al?
I know in the aircraft parts world we strive to keep down the stress risers on both types of materials. Is it really that important with Al?





RE: Steel, Al etc fatique
The fatigue behavior between aluminum and steel is very different. Instead of trying to summarize the differences, I have included a link to the site below. First, review the article on fatigue crack initiation and propagation for aluminum-aluminum alloys. After this, go back and navigate your way to the key to metals steel and review the various articles on fatigue of steel. The web site contains various articles that are worth reading.
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RE: Steel, Al etc fatique
Al doesn't work that way. Even at very low loads you will eventually reach the fatigue limit.
Fatigue in these materials has to be managed differently.
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Plymouth Tube
RE: Steel, Al etc fatique