whats the failure density function of spring?
one unit was failed because of a component spring ruptured during testing, so I had a reliability test about the spring, 10 samples,without accelerations now I’ve tested for 240 hours (the spring’s required life is 100 hours according the products’ life), no failure found, and I must derminate the test limited by the time, but It’s a litttle difficult to get the related reliability plot because of no failure,and I don’t know what the failure density function of spring regularly is, if I get it, I will take it easy.
