Peening Impressions (Dents)

Author:  Prof. Dr. David Kirk, Coventry University, U.K.
Source:  The Shot Peener magazine, Vol 27, Issue 2, Spring 2013
Doc ID:  2013019
Year of Publication:  2013
INTRODUCTION: The SAE specification J2277 on coverage mentions “overlapping peening impressions (dents).” That specification also includes “Coverage is defined as the percentage of a surface that has been impacted at least once by the peening media.” The only evidence that a surface has been impacted is the peening impressions (dents) left by the impacts. It is therefore somewhat surprising that there is no corresponding definition of a peening impression (dent).

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