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| In this issue: |
Issue 48, February 2005 |
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Reliability HotWire is a service
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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 |
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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?
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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 years 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 1820, 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 years 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 years 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 RACs 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://www.ARSymposium.org/southamerica/.
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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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