In my test lab we carry out a great deal of random vibration durability testing. In these tests we take measured data, accelerate it using miners rule and use this as our test profle. We generally use a 20 hour test and attempt to simulate 60000 hours of life, to obtain a reasonable reliabilty estimate with few test components.
However this 20 hour duration is fairly arbitary, but has been used for such a long time people are nervous to change it. I am now getting pressure from a customer to adopt a longer test duration of 70 hours. They have quoted standard ISO 16750-3 which quotes 94 hours test to show they are not being over arduous in their test.
So the upshot of all this somewhat confusing babbling is I wonder if anyone has a standard or can point me towards some literature that gives guidance on arriving at test durations for random approval.
Many thanks.
Scoring disabled. You must be logged in to score posts.
