In this issue: |
Issue
86, April 2008
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Reliability HotWire
is a service of ReliaSoft
Corporation
To subscribe or update your e-mail
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Hot Topics
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Degradation Analysis in
Destructive Testing - Part II Degradation analysis
is an important data analysis technique for projecting failure
data from the degradation history of a quality or performance
characteristic that is associated with the reliability of
a product. This approach typically requires that the degradation
be measured for multiple units over time. However, in some
cases, destructive testing is necessary to obtain degradation
measurements and taking multiple measurements over the life
of the same unit is therefore not feasible. The
previous month's issue of the Reliability HotWire
presented an approach for handling such a data analysis
problem and predicting a failure distribution model using
ALTA 7. In
this article an alternative method is presented using
Weibull++ 7.
To read more, see
http://www.weibull.com/hotwire/issue86/hottopics86.htm

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Reliability Basics |
Discussion of the Residual
Sum of Squares in DOE Variation occurs in nature,
be it the tensile strength of a particular grade of steel,
the caffeine content in your energy drink or the distance
traveled by your vehicle in a day. Variations are also seen
in the observations recorded during multiple executions
of a process, even when conditions are kept as homogeneous
as possible. The natural variations that occur in a process,
even when all factors are maintained at the same level,
are often termed noise. In Design of Experiments
(DOE) analysis, a key goal is to study the effect(s) of
one or more factors on measurements of interest (or responses)
for a product or process. It thus becomes extremely important
to distinguish the changes in the response caused by a factor
from those caused by noise. A number of statistical methods,
generally referred to as hypothesis testing, are
available to achieve this. These methods normally involve
quantifying the variability due to noise or error in conjunction
with the variability due to different factors and their
interactions. It is then possible to determine whether the
changes observed in the response(s) due to changes in the
factor(s) are significant. In this article, we will discuss
different components of error and give an example of how
the error and each of its components are defined and used
in the context of hypothesis testing. To read more, see
http://www.weibull.com/hotwire/issue86/relbasics86.htm
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Tool
Tips |
- Can I edit the optimal
solutions in DOE++s Optimization tab?
- What functionality
is available in the Tasks area of my XFRACAS
Portal page?
To read more, see
http://www.weibull.com/hotwire/issue86/tooltips86.htm

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Latest Software Updates |
DOE++ (1.0.1) has
been released! In addition, new service releases are now
available for Weibull++
(SR 7.5.4), ALTA
(SR 7.5.4) and RENO
(SR 1.0.10). To determine the compile revision of the application
on your computer, select About from the Help
menu.
More Software Downloads...
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Hot
News |
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New Software Release!
- ReliaSoft's
DOE++
software was officially released in March and is
now available for purchase. This powerful software
package facilitates traditional Design of Experiments
(DOE) techniques and also expands upon standard
methods to provide the proper analysis treatment
for interval and right censored data - offering
a major breakthrough for reliability-related
analyses! For more information about the product's
features and applications, please visit
http://DOE.ReliaSoft.com.
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New DOE Training Seminar
- Mark your calendars for June 2-4, 2008
to attend the
RS 588 Design of Experiments (DOE) training
seminar in Tucson. This three-day course begins
with DOE fundamentals and continues with advanced
concepts, principles and requirements. Participants
will be thoroughly exposed to DOE through theoretical
and hands-on sections that will allow them to perform
DOE methods. They will also learn how to analyze
data from such experiments, including factorial
design, fractional factorial design, robust design,
response surface methodology (RSM) and mixture design.
For more information on this course, please visit
http://www.ReliaSoft.com/seminars/gencourses/rs588.htm.
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ARS Advanced Registration
Deadline Act now to take advantage of
the $200 discount for this year's International
Applied Reliability Symposium, North America, which
will be held June 17-20, 2008 at the Grand
Sierra Resort in Reno, Nevada. Visit
http://www.ARSymposium.org/register.htm to register
by April 23, 2008 for this special rate.
Hotel rooms at the Grand Sierra Resort will also
need to be reserved by May 18, 2008 to be eligible
for the negotiated Symposium rate.
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Whirlpool Corporate
Partner License - Whirlpool Corporation
has demonstrated its total commitment to reliability
engineering practices by recently becoming an
official ReliaSoft Global Corporate Partner.
This agreement provides all Whirlpool employees
around the world with full unlimited access to all
standalone products offered directly by ReliaSoft
as well as access to all ReliaSoft training material.
Welcome aboard, Whirlpool! Learn more about ReliaSoft's
Corporate Partner License option at
http://www.ReliaSoft.com/license.htm#partner.
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Upcoming
Public Training Event Calendar |
April 2008 |
April 14 - 15,
2008:
RS 480 Reliability
Centered Maintenance
in
Warsaw, Poland |
April 17 - 18,
2008:
International
Applied Reliability Symposium
in
Chennai, India |
April 21 - 25,
2008:
MSMT Foundations
in
Tucson, Arizona |
April 23 - 25,
2008:
RS 521 Advanced
QALT
in
Singapore |
May 2008 |
May 12 - 14,
2008:
RS 522 Advanced
System Analysis
in
Manchester, UK |
May 14 - 16,
2008:
RS 521 Advanced
QALT
in
Tucson, Arizona |
May 14 - 16,
2008:
RS 511 Adv. Reliability
Growth Analysis
in
Tucson, Arizona |
May 15 - 16,
2008:
RS 470 FMEA/FMECA
in
Manchester, UK |
June 2008 |
June 2 - 4, 2008:
RS 588 Design
of Experiments (DOE)
in
Tucson, Arizona |
June 30 - July
4, 2008:
RS 540 Reliability
and Maintainability Analysis
for Repairable Systems
in
Singapore |
June 5 - 6, 2008:
RS 480 Reliability
Centered Maintenance
in
Tucson, Arizona |
June 9 - 13,
2008:
MSMT Foundations
in
Turin, Italy |
June 11 - 13,
2008:
RS 560 Introduction
to Design for Reliability
in
Bangalore, India |
June 17 - 20,
2008:
International
Applied Reliability Symposium
in
Reno, Nevada |
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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
contact us. |
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Copyright 2008
ReliaSoft Corporation,
ALL RIGHTS RESERVED
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