7.5. Should burn-in tests be systematically conducted? 136
7.5.1. Constraints extrinsic to the equipment manufacturer 137
7.5.2. Constraints intrinsic to the equipment manufacturer 137
7.5.3. Decision criteria 137
7.6. Test coverage 142
7.7. Economic aspect of burn-in 144
7.7.1. No burn-in test is conducted 145
7.7.2. Burn-in test is conducted 146
Chapter 8. Run-In 153
8.1. Run-in principle 153
8.2. Stabilization 156
8.2.1. Proposed principle 156
8.2.2. Drift acceleration law 159
8.2.3. Choice of the drift model 161
8.2.4. Equivalent level of physical contribution 162
8.3. Expression of the corresponding degradation 164
8.4. Optimization of the stabilization time 165
8.5. Estimation of a prediction interval of the degradation 167
8.5.1. Principle of the stabilization method 167
List of Notations 171
List of Definitions 173
List of Acronyms 179
References 183
Index 187
Every parent is concerned when a child is slow to become a mature adult. This is also true for any product designer, regardless of their industry sector. For a product to be mature, it must have an expected level of reliability from the moment it is put into service, and must maintain this level throughout its industrial use.
While there have been theoretical and practical advances in reliability from the 1960s to the end of the 1990s, to take into account the effect of maintenance, the maturity of a product is often only partially addressed.
Product Maturity 1 fills this gap as much as possible; a difficult exercise given that maturity is a transverse activity in the engineering sciences; it must be present throughout the lifecycle of a product.
About the Author Franck Bayle is an electronic engineer by training. He has practiced for almost 15 years, working at Crouzet and then at Thalès in Valence, France. He has also worked in reliability and maturity.