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| In this
issue: |
Issue
20, October 2002 |
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Reliability HotWire is a service of ReliaSoft
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| Hot Topics |
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Determining the
Reliability of a System with Load Sharing
A reliability block
diagram (RBD) allows you to graphically represent how the components
within a system are reliability-wise connected. In most cases,
independence is assumed across the components within the system. Meaning,
the failure of component A does not effect the failure of component B.
However, if your system consists of multiple components sharing a load
then the assumption of independence no longer holds true. If one component fails then the component(s) that are still operating will have
to assume the failed unit's load. Therefore, the reliabilities of the surviving unit(s) will change. Calculating the system reliability is no
longer an easy proposition. This article will explore the concept of component dependence while using accelerated life test data to determine system reliability.
To
read more, see http://www.weibull.com/hotwire/issue20/hottopics20.htm
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| Reliability
Basics |
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| The
purpose of this section is to offer background and advice to the novice
reliability engineer.
Difference Between Physical and Reliability-Wise Arrangement
Reliability block diagrams are created in order to illustrate the way
that components are reliability-wise arranged in a system. There are
different "structural properties" of a system, such as series, parallel, etc. These structural properties refer to the system's state of success or failure based on the
states of its components. However, although the physical structural arrangement is clearly related to the reliability-wise arrangement, the two are not necessarily identical.
To read more, see http://www.weibull.com/hotwire/issue20/relbasics20.htm
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| Tool
Tips |
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The
Tool Tips section addresses helpful hints and frequently asked questions
about ReliaSoft software products.
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What
are the differences between ALTA 6 Standard and ALTA 6 PRO?
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Where can I find resources on life data analysis, accelerated life testing analysis and system reliability analysis?
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How do I specify which time-varying profile(s) to use in
calculations when implementing the Cumulative Damage model in ALTA 6 PRO?
To read more, see http://www.weibull.com/hotwire/issue20/tooltips20.htm
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| Latest
Software Updates |
| Service
Packs for Weibull++
6 MT (SP3) and MPC (SP2)
are currently now available. To determine the compile revision of the
application on your computer, select About from the Help menu.
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| Hot
News |
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Introducing the Ultimate System Visualization and Analysis Tool - ReliaSoft's BlockSim software provides
astounding analytical power while maintaining an artful simplicity of use. The new version, BlockSim 6, supports exact reliability computations for the most complex systems, now
including configurations with standby redundancy as well as load sharing. The simulation capability for repairable systems analysis is more sophisticated and realistic than ever, now
including detailed maintenance parameters, cost summaries, throughput estimations and much, much more. For more information on the features of BlockSim 6, anticipated for release in
Winter 2002, please visit http://BlockSim.ReliaSoft.com/preview.
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Introducing Xfmea for All Types of FMEA/FMECA - ReliaSoft's
Xfmea software provides expert support for all types of FMEA and FMECA (such as DFMEA, PFMEA, FMECA, etc.) according to the major industry standards and customizable to meet your particular needs. The software facilitates the analysis process and provides flexible data management and extensive reporting capabilities.
Xfmea is anticipated for release in Winter 2002 and a sneak preview of the product features is available at http://www.ReliaSoft.com/xfmea.
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Reliability
Growth Update - ReliaSoft is very pleased to announce
that Deere & Company and the U.S. Naval Aviation Depots have
signed on as part of the Development Team for the new version of the
Reliability Growth software. The new software suite will include the
most advanced theoretical models, as developed by Dr. Larry Crow,
and will feature his methodology for reliability growth management
and planning. Look for more details on this in the months to come!
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Reliability
Training Seminars - Upcoming ReliaSoft public reliability
training seminars include:
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QALT
Boot Camp intensive three day course on advanced topics,
concepts and applications of quantitative accelerated life
testing (QALT) analysis, such as time-varying stress, multiple stress
testing and ReliaSoft's ALTA PRO software: November 6 - 8,
2002 in Tucson, Arizona. For more information, see http://www.ReliaSoft.com/seminars/qalt.htm.
Please remember that registered users of the ALTA PRO
software are entitled to attend this seminar at no cost. |
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Master
the Subject, Master the Tools training seminar for
life data analysis, accelerated life data analysis and
system reliability analysis: November 18 - 22, 2002 in Tucson,
Arizona. For more information, see http://www.ReliaSoft.com/seminars/master.htm. |
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Reliability
Training Courses at the GM Knowledge Center - We are
pleased to announce that once again ReliaSoft will be providing
training classes for GM employees and qualified GM suppliers at the
General Motors Knowledge Center in Warren, Michigan. The courses
offered will cover life data analysis and system reliability,
maintainability and availability analysis. For more information,
visit the GMU Knowledge Center Web site at http://www.gmulearning.com
or contact ReliaSoft at +1.520.886.0410. Class size is limited. GM suppliers can check
with GM for class availability. The remaining 2002 class schedule is
as follows:
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October
21 - 23, 2002 - Life Data Analysis |
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October
24, 2002 - System Reliability |
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Contribute
to HotWire
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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 © 2002 ReliaSoft
Corporation, ALL RIGHTS RESERVED
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