Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: The Almen Gage and Almen Strip
Author: Jack Champaigne
Source: TSP, Vol 04/Issue 1, Spring 1990
Publication year 1990
Document number: 1990152
Number of pages: 2
Abstract:
After the discovery that surface treatment by blast cleaning caused significant fatigue resistance improvement, John Almen devised a scheme to provide process consistency.
Intensity of the shot blast stream was deemed to be a dominant variable to be controlled. Measurement of this intensity was made, by implication, with a test strip made of
the same material as the valve springs being treated (SAE 1070 RC 45-50). By blasting, and therefore stretching, only one surface of the test strip the resulting curvature
could be used as a measure of blast intensity.
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