Browse Publications Technical Papers 2003-01-3673
2003-11-18

Bumper Fatigue Cracks 2003-01-3673

One thing that is very important in a carmaker company is its know-how built during all its life. Such an experience allows, for instance, to correlate the customer expected product life with accelerated tests procedures.
When it comes to cars, it is usual to have correlated proving routes in such way that if a prototype can take a number of passing in the proving ground without failure, it is unlikely the car is going to fail during a regular life. In the other hand, if a failure at determined percentage of the test happens, it is predictable that the same failure shows up at the same percentage of the product design life.
This paper proposes a methodology based on the SxN fatigue theory to solve durability issues observed in correlated durability tests.

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