Relationship of damage evolution of ceramic matrix composites between static and dynamic oxidizing gas environments

The present work aims toward the application of an innovative methodology for testing environmental performance of CMC materials with an integrated testing platform including a simulated equivalent environments system (ES) and a high temperature wind tunnel environments system (WS). The similarity and the mapping relationship of damage evolution of CMCs between static ES and dynamic WS with the same contents of oxidizing atmosphere were analyzed and compared. The multiplication factor between ES and WS was identified, and correlated experimentally and theoretically with the major environmental variables such as temperature, stress, and gas velocity.