Dec
1
Reliability of Repairable Systems vs. Non-Repairable Systems
December 1, 2011 | Leave a Comment
When performing various reliability tasks, non-repairable systems or products are treated differently from repairable systems or products. Some of the tools that are used for one type are not applicable to the other. Obviously, at some level, repairable systems are composed of non-repairable parts. Examples of non-repairable systems would be “one-shot” devices like light bulbs [...]
May
5
Analyzing Data for Repairable Systems
May 5, 2010 | Leave a Comment
Many of the “standard” reliability methods are intended for non-repairable systems. That is, when a component, sub-assembly or system fails, it is not repaired and returned to service. The Weibull distribution and other well-known distributions which effectively describe the time to failure assume the failures are “terminal”. That is, the whole system is replaced. In [...]
Jun
27
High-Availability Systems
June 27, 2009 | 1 Comment
Hardware Availability is a function of hardware reliability and the maintainability/serviceability features of that hardware. The principle way of achieving availability goals is to first achieve the reliability goals. This is the most cost-effective way for both the producer and customer to achieve these goals. However, even with the best design and manufacturing practices, random [...]
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