North America

Red Room - Session 5

8:00 to 9:00 a.m. Wednesday, June 4, 2014

Reducing the Validation Cost of an Engineering Design Change When a Failure Occurs on a Censored Test

When an unexpected failure occurs during a long durability censored test, a design change is required. Relying on the same long durability test will jeopardize the timing of the project to validate the new design before it can be released into production. Since failures have occurred on the censored test then this valuable "Life" information can be utilized along with accelerated stress testing and substantiation testing to shorten the validation cycle and confirm that the new design will not only be better than the old design, but it will also successfully complete the long durability test without failure.

Key Words: Weibull Plot, Accelerated Stress Testing, Substantiation Testing, Demonstration Testing, Regression with Life Data, Physics of Failures, Design Change Cost Reduction

Jeff Snow

Magna Powertrain

Concord, Ontario