This SAE recommended practice provides some procedure for determining shot peening coverage and relating coverage to part exposure to the media stream. Effectiveness of shot peening is directly dependent on coverage. Either incomplete or excessive coverage can be detrimental to fatigue strength and life.
Rationale
The document is being revised to: (1) establish guidelines for visual (magnified) examination to determine coverage. Alternative indirect methods can assist but not necessarily replace visual examination. Revision (2) clarifies that full/coverage allows random unpeened islands smaller than the peening dimples.
The Surface Enhancement Committee is primarily engaged in standard practices for shot peening and similar metal treatments to abate fatigue failure. The committee webpage is meant to be a repository for Surface Enhancement Committee on-going work and news. It is meant mainly for active committee members quick reference, but all others are also welcome to look and comment (you are welcome to attend meetings also). The materials presented here are NOT SAE official documents, and are only meant as working documents, with the usual working document errors. The material should not be used for any other purposes except Surface Enhancement Committee work. Participants in the SAE Surface Enhancement Committee include OEMs, suppliers, consulting firms, government and other interested parties.
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J2277_201304
Shot Peening Coverage Determination
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Shot Peening Coverage Determination
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