Hi, I've found information on this forum very valuable. It helps me finding answers to topics I've been struggling for a while.
I have concern similar to bcoolnow. (see this thread starting at post #45) I want to perform the demonstration test for reliability but I am no longer sure that what I am thinking is wright. There is a component I want to test for reliability. Its working time is 10 years and I need to perform a test for a 90% reliability at 30 weeks time. A confidence level required is at least 90% and I don't want to have any failures. The sample size I am getting are high and I don't think it's feasible for my test. Well, maybe it is feasible and I understand the need for it but if I have time limitations and have only few samples available it looks like impossible to complete! Is there a rule for big machinery components like motors, pumps, etc...?
Thank you very much for any help.
I have concern similar to bcoolnow. (see this thread starting at post #45) I want to perform the demonstration test for reliability but I am no longer sure that what I am thinking is wright. There is a component I want to test for reliability. Its working time is 10 years and I need to perform a test for a 90% reliability at 30 weeks time. A confidence level required is at least 90% and I don't want to have any failures. The sample size I am getting are high and I don't think it's feasible for my test. Well, maybe it is feasible and I understand the need for it but if I have time limitations and have only few samples available it looks like impossible to complete! Is there a rule for big machinery components like motors, pumps, etc...?
Thank you very much for any help.
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