Almen Strip Variability - A Statistical Treatment

Author:  Marvin Happ, David Rumpf
Source:  Conf Proc: ICSP-6, (p.302-311)
Doc ID:  1996078
Year of Publication:  1996
Abstract:  
Repeatability of Almen strip arc height measurements has been determined for both A and N strips. Repeatability estimates are based on exposing multiple strips under constant peening conditions. The effects of media, fixture orientation and type of machine on arc height variation have also been investigated. This paper discusses the amount of almen strip variability observed and its implications for defining the saturation point; and, ofers a recommendation for peening intensity limits based on process capability.