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| In this
issue: |
Issue
48, February 2005 |
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| Hot Topics |
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Using BlockSim to Analyze Systems That Do Not Operate
24 Hours per Day
In many production lines,
the manufacturing operation is not a 24-hour operation, but a partial-day
operation (e.g. 8 hours or 16 hours per day) in which maintenance
crews are required to continue their work even beyond the end of a shift. In this article, we will discuss
using BlockSim to model and
simulate such systems. The key for modeling this type of scenario is to incorporate a time
block that handles the "clock" of the system and makes the operation stop for
a certain duration (or percentage) of the time, while allowing the crews to
continue their work.
To
read more, see
http://www.weibull.com/hotwire/issue48/hottopics48.htm
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| Reliability Basics |
Beta Binomial Confidence Bounds on the Mixed
Weibull Distribution
The
mixed Weibull distribution is used to model data that do not fall on a
straight line on a Weibull probability plot. Data of this type, particularly
if the data points follow an S-shape on the probability plot, may be
indicative of more than one failure mode at work in the population of
failure times.
This article describes how the beta binomial
method is used to estimate the confidence bounds for such analyses.
To read more, see
http://www.weibull.com/hotwire/issue48/relbasics48.htm
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| Tool Tips |
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How can I
view the properties of all blocks simultaneously in BlockSim?
-
In Weibull++, when
fitting a distribution with a location parameter, should the location parameter
always be equal to the minimum failure time?
To read more, see
http://www.weibull.com/hotwire/issue48/tooltips48.htm
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Hot News |
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2005 International Applied Reliability Symposium: "Sharing Applications, Success
Stories and Lessons Learned in Reliability and Maintainability
Engineering."
– The ARS Board of Directors is pleased to announce
Vice Admiral Scott Fry United States
Navy (Retired) as the keynote speaker for this year’s Symposium. He
is currently acting as Group Senior Vice President and manager of
the Strategic Systems Group for Alion Science and Technology. The
Symposium will be held May 18–20, 2005 at the Catamaran
Resort on Mission Bay in San Diego, California. ARS provides
a forum for expert presenters from industry and government to come
together with reliability practitioners from all over the world to
discuss the application of reliability principles to meet real world
challenges. Early registration is recommended and available at:
http://www.ARSymposium.org/register.htm.
In addition,
the Symposium event details are growing! You can now navigate the
ARS 2005 Program Matrix by Title, Presenter or Session ID. Further
exploration will then lead to presentation overviews. Please visit
the Symposium Web site at
http://www.ARSymposium.org/ to learn more. |
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ARS
2005 Sponsorship
– This year’s International Applied Reliability Symposium is offering a creative
way to help your company demonstrate its commitment to reliability
engineering. The ARS 2005 introductory sponsorship package provides
your company with targeted visibility while also allowing a number
of your engineers to attend the event at no additional cost. Send a
quick message to
Info@ARSymposium.org if you are interested in benefiting your
company and the engineering team with this simple solution. |
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ReliaSoft
Scientist Presenting in France – Mr. Adamantios Mettas,
Senior Scientist, will be presenting a paper on Accelerated Life
Test Analysis at this year’s QUALITA 2005 conference in Bordeaux,
France. The event dates are March 16 – 18, 2005. Mr. Mettas
will be presenting on Thursday the 17th. For more information about
this reliability and maintainability conference, please visit:
http://www.lap.u-bordeaux1.fr/qualita2005/default-a.htm. |
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Enhanced Reliability Prediction – ReliaSoft has always stressed the importance of
performing reliability assessments based on the results of testing
from in-house labs and data pertaining to the performance results of
the product in the field. We also recognize that reliability
prediction stands at the center of many reliability programs across
government and industry. Therefore, we currently offer an entire
suite of quantitative analysis software tools and RAC’s prediction
software,
PRISM. ReliaSoft is also finalizing the newest addition to
our suite of software,
Lambda Predict
for standards based reliability prediciton with any of
the major prediction standards. If your
current business model mandates the use of reliability prediction
and you want to utilize your more accurate in-house data too, then
ReliaSoft offers the best of both worlds. |
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Chinese MSMT Training
–
ReliaSoft China will be holding a
localized MSMT training
seminar in Shenzhen, China this coming March 2005. For complete
details in Chinese, please visit:
http://www.ReliaSoft.cn/seminars/MSMT_Intro2005.htm. |
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Regional Symposia -
The annual International Applied Reliability Symposium is
held in the
USA.
In addition to this event, regional Applied Reliability Symposia
combine both regional presenters, addressing needs and applications
specific to that region, and international presenters. Rio
de Janeiro, Brazil will be the first host of such an event this
coming June 16 – 17, 2005. An official call for papers and
additional information can be reviewed at:
http://ReliaSoft.com.br/Simposio2005/index.htm.
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Public Training Event Calendar
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February 2005 |
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February 28 - March 4, 2005:
MSMT Foundations in
Tucson, Arizona |
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February 28 - March 4, 2005:
MSMT Foundations in
Istanbul, Turkey |
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March 2005 |
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March 7 - 8, 2005
Failure Modes, Effects and Criticality Analysis and Xfmea in
Melbourne, Australia |
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March 14 - 18, 2005:
MSMT Foundations in
Warsaw, Poland |
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April 2005 |
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April 4 - 6, 2005:
Advanced System Reliability, Maintainability and Availability
Analysis in
Tucson, Arizona |
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April 7 - 8, 2005:
Failure Modes, Effects and Criticality Analysis and Xfmea in
Tucson, Arizona |
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April 25 - 29, 2005:
MSMT Foundations in
Tucson, Arizona |
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April 27 - 29, 2005:
Advanced System Analysis and BlockSim in
Singapore |
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May 2005 |
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May 2 - 6, 2005:
MSMT Foundations in
Melbourne, Australia |
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May 18 - 20, 2005:
2005 International Applied Reliability Symposium in
San
Diego, California |
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More
Reliability Training Seminars... |
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Contribute to HotWire |
Contributions Welcomed
As always, your
feedback and contributions are appreciated. ReliaSoft is able to provide the most
user-friendly reliability software packages and support because we
listen to our customers. This applies to our newsletters and
publications as well. We welcome any suggestions or contributions you may
have for Reliability HotWire.
If you have a topic or
article that you think would be useful to the readers of Reliability
HotWire, feel free to contact us. We can be reached by
e-mail at HotWire@ReliaSoft.com,
or by standard mail at 1450 S. Eastside Loop, Tucson, AZ 85710-6703,
USA.
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Copyright © 2005 ReliaSoft
Corporation, ALL RIGHTS RESERVED
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