Peening Intensity True Meaning and Measurement Strategy

Author:  Prof. Dr. David Kirk, Coventry University, U.K. Electronics Inc.
Source:  The Shot Peener magazine, Vol 30, Issue 3, Summer 2016
Doc ID:  2016030
Year of Publication:  2016
INTRODUCTION The two most important quantitative terms for shot peeners are “Coverage” and “Peening Intensity.” “Coverage” has a single, unambiguous, definition: The percentage of the peened area that has been indented at least once. “Peening Intensity,” on the other hand, is defined in several ways. Customers identify peening intensity as being the arc height of a specified point on a so-called “Saturation Curve.” In addition, internet searches for definitions of peening intensity commonly yield “Peening intensity is the measure of the energy of the shot stream”—which is incorrect. This wrongly implies that peening intensity will increase with shot stream flow rate and therefore leads to confusion.

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