FMEA
stands for Failure
Mode and Effects Analysis.
1. Potential Failure
Mode and Effects
Analysis (FMEA)
is widely used by
manufacturing industries
in various phases of the
product life cycle and
is now increasingly
finding use in the
service industry. It is
described by
AIAG,
QS-9000,
SAE J 1739,
IEC 60812, JEP131 and
other standards,
sometimes called
"automotive" or "AIAG"
(Automotive Industry
Action Group) FMEA. It
is required by many
other standards like ISO
14971 (Medical devices
risk management) and
more.
Potential FMEA is
analytical technique
utilized as a mean to
assure that, to the
extent possible,
potential failure modes
and their associated
causes/mechanisms have
been considered and
addressed. Corrective
actions are suggested
and selected for
implementation and
control plan is formed
as part of the
procedure.
Potential FMEA deals
with Severity,
Occurrence and Detection
rankings, multiplication
of these 3 ranks gives
us RPN - Risk Priority
Number, which is a
measure of risk.
Any entity like product,
process, software,
system etc. may be a
subject of this
analysis.
The screenshot below
illustrates FMEA example
done using RAM Commander
software:
See RAM Commander
Potential FMEA Software
Module for more
information about this
FMEA type.
2. Hardware FMEA
and FMECA
(Failure Mode, Effects
and Criticality
Analysis) is a
continuation of system
reliability analysis. It
is required and
compatible with
MIL-STD-1629A
and other standards
(like GJB 1391,
GJB 1392,
AIR FORCE SMC REGULATION
800-31 and more).
Many standards and
regulations for
aerospace, defence,
telecommunications,
electronic and other
industries require that
FMECA analysis must be
performed for all
designed/manufactured/acquisition
systems, especially if
they are mission or
safety critical.
FMECA includes failure
analysis, criticality
analysis and testability
analysis. It analyzes
different failure modes
and their effects on the
system, classifies and
prioritizes end effects
level of importance
based on failure rate
and severity of the
effect of failure.
Testability analysis is
a part of FMECA module
and is used to analyze
methods of failure mode
detection/isolation,
perform fault
diagnostics, validate
test efficiency and find
undetectable failures.
FMECA module uses a
product tree previously
created by the user for
the reliability analysis
purposes. It uses
reliability and
maintainability
information received as
a result of reliability
and maintainability
analysis.
The screenshot below
illustrates FMECA
example done using RAM
Commander software:
See RAM Commander
FMECA and Testability
Software Module for
more information about
this FMEA type.
See also:
RAM Commander homepage
SoHaR Reliability and
Safety Software Overview
See
SoHaR Reliability,
Safety and Quality
Services if you wish
us to perform
reliability prediction,
analysis or other
activities for you
Download the latest
version of RAM Commander
V8.2 (November 2011)
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