Bogey Testing |
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Bogey Testing |
Bogey testing requires the testing duration be equal to the required life. For
example, if 95% reliability is required at 200,000 kilometers of service then
units being tested will be removed from testing when they fail or when they
complete the equivalent of 2000,000 kilometers of testing. The sample size
required to demonstrate reliability of r with a confidence level of c
is
n = ln(1-c)/ln(r) Example Solution n = ln(1-0.9)/ln(0.99) = 229.1 Click Here to download this example in a spreadsheet. |