•The graph on the previous slide is the same graph as
the first one, but with
different vertical scale. It shows for low cumulative failures the linear relationship:
•
–Cumulative number of failures =
•
•
•So, what should be the MTBF of a product if
we are willing to accept
2% failures in 20 years?
•
•
• Answer: = 1000 years MTBF
•