In Reply to Parent Post by Allen M.
I've been asked to help in reliability and maintainability planning for a new product, I've never done this before where do I start?
I recommend that you start at the beginning and try to reach the end by way of the middle
. Seriously though, it's a very broad question. In general, it's best to start with some idea of what's desired. Try to establish the desired useful life of the product. Use experience with similar products, even those of competitors, if you can. Do a DFMEA to establish as many of the anticipated failure modes as possible, and what features are in the design (or should be) to mitigate them (this is where maintainability might come in). In essence what you're trying to accomplish is A) the ideal reliability attributes, B) how maintenance contributes to longevity, and C) what you need to do to achieve (A), or get as close to it as reasonably possible.