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What are the dates and locations for ReliaSoft's 2004 public reliability
training seminars?
The following table presents the dates and locations for ReliaSoft's
public reliability training
seminars in 2004. If your schedule conflicts with these public
training seminars or if your organization requires customized training,
please contact ReliaSoft
to discuss on-site seminar options.
|
Date |
Course |
Location |
|
February 23 - 27 |
Master the Subject, Master the Tools
-
RS 401 - Life Data Analysis (M, T, W)
-
RS 402 - Accelerated Life Testing (Th)
-
RS 403 - System Reliability (F) |
Tucson,
Arizona
USA |
|
March 22 - 26 |
RS 522 - Advanced System Analysis and BlockSim
(M, T, W)
RS 470 - FMEA/FMECA and Xfmea
(Th, F) |
Tucson,
Arizona
USA |
|
April 19 - 21 |
RS 521 - QALT Boot Camp
(M, T, W)
RS 511 - Reliability Growth Analysis and RGA
(M,T,W) |
Tucson,
Arizona
USA |
|
May 3 - 7 |
Master the Subject, Master the Tools
-
RS 401 - Life Data Analysis (M, T, W)
-
RS 402 - Accelerated Life Testing (Th)
-
RS 403 - System Reliability (F) |
Tucson,
Arizona
USA |
|
June 16 - 18 |
2004 International Applied Reliability Symposium |
San Diego, California
USA |
|
August 2 - 6 |
Master the Subject, Master the Tools
-
RS 401 - Life Data Analysis (M, T, W)
-
RS 402 - Accelerated Life Testing (Th)
-
RS 403 - System Reliability (F) |
San
Diego, California
USA |
|
September 20 - 24 |
RS 522 - Advanced System Analysis and BlockSim
(M, T, W)
RS 470 - FMEA/FMECA and Xfmea
(Th, F) |
Tucson,
Arizona
USA |
|
November 15 - 19 |
Master the Subject, Master the Tools
-
RS 401 - Life Data Analysis (M, T, W)
-
RS 402 - Accelerated Life Testing (Th)
-
RS 403 - System Reliability (F) |
Tucson,
Arizona
USA |
|
December 6 -
8 |
RS 521 - QALT Boot Camp
(M, T, W)
RS 511 - Reliability Growth Analysis and RGA
(M, T, W) |
Tucson,
Arizona
USA |
|
February 28 - March 4, 2005 |
Master the Subject, Master the Tools
-
RS 401 - Life Data Analysis (M, T, W)
-
RS 402 - Accelerated Life Testing (Th)
-
RS 403 - System Reliability (F) |
Tucson,
Arizona
USA |
When using the Weibull distribution, why does it seem that the mean
increases as the value of beta decreases (0 < beta < 1) for a constant
value of eta?
Actually, this is one
of the reasons why the mean is such a misleading metric. As mentioned,
the mean increases as beta decreases (for the same eta and for 0 < beta
< 1). However, if you calculate the probability at the mean, you will
see that there is a higher probability of occurrence at the lower beta.
In reliability engineering, this means that a higher portion of the
population will fail by the mean life. It also means that a higher
percentage will fail initially, but there is also a small percentage
that will survive a long period of time (compared to the initial
failures). This portion is what is pushing the mean to the right. In
other words, you have a much higher spread (or standard deviation). The
smaller the beta, the higher the spread. Relating to the pdf,
even though the curve leans to the y-axis as beta goes to zero, you will
notice that it also extends further on the x-axis (i.e.
approaches zero less rapidly).
Why doesn't BlockSim allow for the rolling up of system reliability
uncertainty using confidence limits on the individual component
parameters?
We have looked into
adding this feature to BlockSim,
but there are two issues that need to be addressed:
- All the blocks in
the diagram must have the associated uncertainty on the parameters
included in their properties. Even if one block does not have these
values then the analysis should not be performed.
- As the number of
blocks in the diagram increases, the bounds on reliability become
unrealistic (i.e. between 0 and 1).
We are continuing to
look into this and we may include this feature at some point, regardless
of these drawbacks.
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