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Robin Clark 2013-09-27 00:00:02 +01:00
parent bda19ba4d7
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5 changed files with 7 additions and 7 deletions

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@ -1180,7 +1180,7 @@ An example PFMEA report is presented in table~\ref{tbl:pfmeareport}.
\section{FMECA - Failure Modes Effects and Criticality Analysis} \section{FMECA - Failure Modes Effects and Criticality Analysis}
\fmmdglossFMECA \fmmdglossFMECA
\label{sec:FMECA} \label{sec:FMECA}
\paragraph{ FMECA - Failure Modes Effects and Criticality Analysis.} %\paragraph{ FMECA - Failure Modes Effects and Criticality Analysis.}
% \begin{figure} % \begin{figure}
% \centering % \centering
% %\includegraphics[width=100pt]{./military-aircraft-desktop-computer-wallpaper-missile-launch.jpg} % %\includegraphics[width=100pt]{./military-aircraft-desktop-computer-wallpaper-missile-launch.jpg}
@ -1224,9 +1224,9 @@ determined, to become part of the failure mode model.
A history of the usage and development of FMECA may be found in~\cite{FMECAresearch}. A history of the usage and development of FMECA may be found in~\cite{FMECAresearch}.
\fmmdglossFMECA \fmmdglossFMECA
\paragraph{ FMECA - Failure Modes Effects and Criticality Analysis.} \paragraph{FMECA - Statistical variables.}
% %
Very similar to PFMEA, but instead of cost, a criticality or An extension of PFMEA, but instead of cost, a criticality or
seriousness factor is ascribed to putative top level incidents. seriousness factor is ascribed to putative top level incidents.
FMECA has three probability factors for component failures, a system operational time and a severity factor. FMECA has three probability factors for component failures, a system operational time and a severity factor.

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@ -281,7 +281,7 @@ This is becoming apparent in a dilemma now faced
by organisations dealing with highly safety critical systems and having to rely on `smart~instruments'~\cite{justifysmartnuke} by organisations dealing with highly safety critical systems and having to rely on `smart~instruments'~\cite{justifysmartnuke}
that can no longer be validated using FMEA. that can no longer be validated using FMEA.
% %
Smart instruments are dealt with in the section below. Smart instruments are discussed in the section below.
Distributed real time systems, which rely on micro-controllers connected in a network Distributed real time systems, which rely on micro-controllers connected in a network
using a communications protocol, similarly are difficult to meaningfully analyse using FMEA (see section~\ref{sec:distributed}). using a communications protocol, similarly are difficult to meaningfully analyse using FMEA (see section~\ref{sec:distributed}).

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@ -424,7 +424,7 @@ it is necessary to consider all three components as one larger {\fg}.
\centering \centering
\includegraphics[width=400pt]{CH5_Examples/circuit1001.png} \includegraphics[width=400pt]{CH5_Examples/circuit1001.png}
% circuit1001.png: 420x300 pixel, 72dpi, 14.82x10.58 cm, bb=0 0 420 300 % circuit1001.png: 420x300 pixel, 72dpi, 14.82x10.58 cm, bb=0 0 420 300
\caption{Circuit 1} \caption{Differencing Amplifier using two op-amps.}
\label{fig:circuit1} \label{fig:circuit1}
\end{figure} \end{figure}
\fmmdglossOPAMP \fmmdglossOPAMP

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@ -629,7 +629,7 @@ one symptom set, enforces this, for the derived
component created in the next stage. component created in the next stage.
} }
{ {
Ensuring that no result belongs to more than one symptom Ensuring that no result is linked to more than one symptom
%set <-------------------------------------------- HOW did the word set get in here!!!!!!!! Totally screwed up the meaning 26SEP2013 %set <-------------------------------------------- HOW did the word set get in here!!!!!!!! Totally screwed up the meaning 26SEP2013
enforces the `unitary state failure mode constraint' for derived components (see section~\ref{sec:unitarystate}). enforces the `unitary state failure mode constraint' for derived components (see section~\ref{sec:unitarystate}).
} }

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@ -23,7 +23,7 @@ its members will always remain dear to me. %, and I am sure, a strong influence
%%%% IS THIS BIT A BIT MAD???? YES! 27AUG2013 %%%% IS THIS BIT A BIT MAD???? YES! 27AUG2013
% % % Like an army recruits training Sergeant Major I found them % % % Like an army recruits training Sergeant Major I found them
% % % hard task masters at first, and then, as with realising the rationale behind training and % % % hard task masters at first, and then, as with realising the rationale behind training and
% % % {\em even} parade drill, respected and grew to like them. % % % {\em even} parade drill, respected and grew to like them. well one of them anyway, the one who actually helped. the one with the motorbike.
% % % % % % % %
% %
My first debt of gratitude must go to my supervisors, My first debt of gratitude must go to my supervisors,