From 025cca76276fa3fd2ac6ddb8a0a0e0b4bef38f9b Mon Sep 17 00:00:00 2001 From: Robin Clark Date: Mon, 8 Nov 2010 10:34:28 +0000 Subject: [PATCH] . Environmental and operational states And where they should be applied --- fmmd_concept/fmmd_concept.tex | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/fmmd_concept/fmmd_concept.tex b/fmmd_concept/fmmd_concept.tex index b57eb89..f2be36f 100644 --- a/fmmd_concept/fmmd_concept.tex +++ b/fmmd_concept/fmmd_concept.tex @@ -610,6 +610,31 @@ new {\fg}s and we can build a hierarchical `failure~mode' model of the SYSTEM. NEED DIAGRAM OF HIERACY \vspace{20pt} + +\subsection{Environmental and Operational States and FMMD} + +Introduce the ideas + +\subsubsection {Environmental Conditions and FMMD} + +HERE talk about environmental effects of a sub-system. + +Define this further by identifying that +environmental conditions affect components + +for instance a system may be speced for +0 to 85oC operation, but some components +may show failure behaviour between 60 and 85 + +\subsubsection {Operational States and FMMD} +HERE talk about operational states of a sub-system + +Define this further by stating that +operational states are effects on a functional group. +For instance a circuit may have a test line input. +The fnctional group will there fore have two +operational states, testing mode and normal mode. + \subsection{Justification of wishlist} By applying the methodology in section \ref{fmmdproc}, the wishlist can