Material-Environment Interaction and Its Implications in Durability and Reliability Performance of Vehicle Exhausts

摘要

1. Hold-time effect in thermal-mechanical tests (high-temperature fatigue and the V-shape specimen testing) demonstrates the complex nature of the material-environment interaction 2. Oxygen can significantly increase the crack growth rate in some materials, and a fundamental understanding is needed 3. Material-environment interaction needs be explicitly considered in the durability/reliability design and validation of vehicles components and systems.