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tidying CH2

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Robin Clark 2013-09-08 22:18:53 +01:00
parent 499de53920
commit 6b5ce8503d
1 changed files with 3 additions and 2 deletions
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submission_thesis/CH2_FMEA/copy.tex
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@ -212,7 +212,8 @@ from them can be on the conservative side.
\frategloss \frategloss
\fmmdglossFIT \fmmdglossFIT
% %
A FIT value for a micro-processor A FIT\footnote{Failure rates measured per $10^9$ hours of operation
are known as Failure in Time (FIT) values.} value for a micro-processor
may be determined at around 100 using these documents for instance, but may be determined at around 100 using these documents for instance, but
FIT claims for modern integrated micro-controllers are typically less than five~\cite{microchipreliability}. FIT claims for modern integrated micro-controllers are typically less than five~\cite{microchipreliability}.
% %
@ -920,7 +921,7 @@ FMEA is less useful for determining events for multiple
simultaneous simultaneous
failures\footnote{Multiple simultaneous failures are taken to mean failures that occur within the same detection period. failures\footnote{Multiple simultaneous failures are taken to mean failures that occur within the same detection period.
Detection periods are typically determined for the process under control. For instance, for a flame detector in an industrial burner this Detection periods are typically determined for the process under control. For instance, for a flame detector in an industrial burner this
could typically be one second.~\cite{en298}}. is typically one second.~\cite{en298}}.
% %
Work has been performed using component failure statistics to Work has been performed using component failure statistics to
offer the more likely multiple failures~\cite{FMEAmultiple653556} for analysis. offer the more likely multiple failures~\cite{FMEAmultiple653556} for analysis.