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Robin Clark 2010-10-30 17:43:35 +01:00
parent 785aa0624e
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3
lifecycle_modelling/Makefile
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@ -1,6 +1,7 @@
# #
#
#
paper: paper.tex lifecycle_modelling_paper.tex paper: paper.tex lifecycle_modelling_paper.tex
#latex paper.tex #latex paper.tex

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lifecycle_modelling/lifecycle_modelling.tex
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@ -27,6 +27,7 @@ paper
chapter chapter
} }
\section{discovering a `new' failure mode in a component}
Give general idea of how a new failure mode can be integrated into the model. Give general idea of how a new failure mode can be integrated into the model.
@ -36,3 +37,15 @@ How it will generally be limited to small sections of th FMMD tree.
Give specific example, pretend a new failure mode is discovered in a SCHOTTKY diode. Give specific example, pretend a new failure mode is discovered in a SCHOTTKY diode.
Often an electronic component will have a new failure mode `discovered'
I am using as an example a diode which has an exponential relationship
with temperature and reverse leakage current. This is
a failure mode that would not be initially considered in a design.
But when combined with high value resistors could give incorrect voltage readings in some circuits.
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}}
\section{New or additional evironmental Conditions}

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lifecycle_modelling/paper.tex
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@ -22,7 +22,7 @@
\author{R.P.Clark} \author{R.P.Clark}
\title{Product Lifecycle Modelling with FMMD} \title{Product Lifecycle Modelling with FMMD}
\maketitle \maketitle
\input{life_cycle_modelling_paper} \input{lifecycle_modelling_paper}
\bibliographystyle{plain} \bibliographystyle{plain}
\bibliography{../vmgbibliography,../mybib} \bibliography{../vmgbibliography,../mybib}

4
symptom_ex_process/introduction.tex
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@ -32,5 +32,7 @@ of FTA \cite{nasafta} (Fault Tree Analysis) and mimimal cuts sets \cite{nucfta}
Also statistical reliability/probability of failure~on~demand \cite{en61508} and MTTF (Mean Time to Failure) calculations can be produced Also statistical reliability/probability of failure~on~demand \cite{en61508} and MTTF (Mean Time to Failure) calculations can be produced
automatically \footnote{Where component failure mode statistics are available \cite{mil1991}}. automatically \footnote{Where component failure mode statistics are available \cite{mil1991}}.
% %
This chapter focuses on the process of building the blocks, the symptom extraction or abstraction process, that is key to creating an FMMD hierarchy. This chapter focuses on the process of converting {\fgs} to {\dcs}, or building the `blocks' of the FMMD hierarchy.
We can term this stage in FMMD analysis as the `symptom extraction' process.
The symptom extraction or abstraction process, is the key process in creating an FMMD hierarchy.
} }