From 88347a8ef0efeda5f11e5a980330b949ace46cb2 Mon Sep 17 00:00:00 2001 From: Robin Clark Date: Thu, 4 Nov 2010 09:24:36 +0000 Subject: [PATCH] fleshing out skeleton chapter --- lifecycle_modelling/lifecycle_modelling.tex | 60 +++++++++++++++++++-- 1 file changed, 57 insertions(+), 3 deletions(-) diff --git a/lifecycle_modelling/lifecycle_modelling.tex b/lifecycle_modelling/lifecycle_modelling.tex index e0b1582..e1e99bf 100644 --- a/lifecycle_modelling/lifecycle_modelling.tex +++ b/lifecycle_modelling/lifecycle_modelling.tex @@ -8,12 +8,36 @@ This paper describes how the FMMD methodology can be applied throughout the lifecycle of a product, with minimal impact to the cost of re-analysis. +% what I did +Looking at SYSTEMS ENGINEERING concepts. +FMMD static design analysis tool, but can be applied to product life cycle +Becomes a living analysis tool +% what I found + Alterations required in a failure mode model arise from +new failure modes discovered in base components, new failure mode behaviour observed +in {\dc}s, and environmantal effects found that interact with the failure mode model. +% conclusion +FMMD analysis can be updated with these three effects +and we can apply procedures that will automaically force +the uncoverig of new possible SYSTEM failure modes. } } { This chapter describes how the FMMD methodology can be applied throughout the lifecycle of a product, with minimal impact to the cost of re-analysis. +% what I did +Looking at SYSTEMS ENGINEERING concepts. +FMMD static design analysis tool, but can be applied to product life cycle +Becomes a living analysis tool +% what I found + Alterations required in a failure mode model arise from +new failure modes discovered in base components, new failure mode behaviour observed +in {\dc}s, and environmantal effects found that interact with the failure mode model. +% conclusion +FMMD analysis can be updated with these three effects +and we can apply procedures that will automaically force +the uncoverig of new possible SYSTEM failure modes. } @@ -22,12 +46,21 @@ with minimal impact to the cost of re-analysis. \ifthenelse {\boolean{paper}} { paper + +THIS IS THE PAPER VERSION OF THE CHAPTER + +QUICK DESCRIPTION OF FMMD + } { chapter +THIS IS THE CHAPTER IN THESIS VERSION OF THE CHAPTER } -\section{discovering a `new' failure mode in a component} +\section{Three sources of Alteration/addition to the FMMD Model} + + +\subsection{discovering a `new' failure mode in a component} Give general idea of how a new failure mode can be integrated into the model. @@ -46,6 +79,27 @@ But when combined with high value resistors could give incorrect voltage reading I how the FMMD model can have this new failure mode added and what impact it has on the FMMD data model. -\section{Discovering New Failure Mode behaviour ina {\dc}} +\subsection{Discovering New Failure Mode behaviour in a {\dc}} + +Ref Nacy Leveson, system eng. + +A sub-system or system has its own behaviour etc + +These may be traced to combinations of afailure modes +but may be undiscovered in initial analysis. + + +\subsection{New or additional evironmental Conditions} + + + +An environmental effect may be found to affect a sub-system. +Show how this vcan be retro fitted into a working/live FMMD model. + +\section{Conclusion} + +Product Life cycle phases for FMMD + + + -\section{New or additional evironmental Conditions}