Draft Process for Implementing Maintenance Free / Failure Free Operating Periods in

Electronic Systems
 
 

B. Ramakrishnan, M. Jackson, M. Pecht, D. Das,

N. Pendse, P. Sandborn, R. Solomon, R. Subrahmanyam, R. Uppalapati

G. Griffiths (UK RAF), I. Knowles (UK MoD),

P. Mitchell (UK RAF), J. Stewart (UK MoD),

B. Young (DERA)





A maintenance free operating period (M-FOP) is defined as a period of time (or appropriate units) during which a system is both operational and is able to carry out its required function(s) without maintenance activities and without encountering failures. A failure free operating period (F-FOP) is defined as a period of time (or appropriate units) during which no failures, resulting in a loss of system functionality occur. Maintenance/failure free operating periods (M/F-FOPs) are measures of reliability and can be used to replace the traditional mean time between failure (MTBF) approach. M/F-FOPs has the potential to offer the user an increase in the application effectiveness and enhanced operational availability of a system.

Moving to M/F-FOP process increases application effectiveness and enhances the operational availability of a system during the M/F-FOP. The causes of failures are analyzed in the PoF approach, which is provided to the designers for effective system design. Thus M/F-FOP of a system can be obtained using PoF approach. Implementing a M/F-FOP process when designing a system provides a shift towards a scientific approach in preventing failures and caters to the need for an increase in operational availability.

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