Unaccurate warranty data

[Antoinenaudy]

Hello !

I am designing a reliability base for an automotive supplier in which I would like to put basic failures and their failure rates according to warranty data.

These waranty data consist basically in a chart with a column "age" showing the age of the system when it failed and a column "failure" describing the failure.

Unfortunately some failure are basic failures and others intermediate consequences of basic failures.

Is it a good idea to try to put basic failures and non-basic failures side by side in the reliability base ? Or is it better to design a reliability base with only non basic failures to avoid the risk of mixing infomations between basic and non basic failures ?

Thanks for your help,

[usara_reliable]

Hi,
You should be consider all possible failure mode either basic or due to cosequence under warranty case. So just mix both failure and calculate the reliability by fitting particular distribution.

Consider the weibull fit and regression line will show the data inaccuracy if any.


Hope this help to you.