ASQ - Electronics and Communications Division

Materiel Availability Modeling and Analysis for a Complex Army Weapon System

Abstract: © 2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must first be obtained from the IEEE.

Materiel availability (Am) is a new US Department of Defense Key Performance Parameter (KPP) implemented through a mandatory Sustainment Metric consisting of an Availability KPP and two supporting Key System Attributes (KSAs), materiel reliability and ownership cost. Sandia National Laboratories (Sandia), in conjunction with several US Army organizations, developed the analytical foundation, assumptions, and brigade-level modeling approach to support lifecycle, fleet-wide Am modeling and analysis of a complex Army weapon system. Like operational availability (Ao), Am is dependent on reliability, but Am is also affected by other factors that do not impact Ao. The largest influences on Am are technology insertion and reset downtimes. Am is a different metric from Ao. Whereas Ao is an operational measure, Am is more of a programmatic measure that spans a much larger timeframe, additional sources of downtime, and additional sources of unscheduled maintenance.

Keywords: RAMS 2011 Proceedings - Product Reliability - Reliability Model - Warranty

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