scholarly journals On the effect of fiber creep-compliance in the high-temperature deformation of continuous fiber-reinforced ceramic matrix composites

2010 ◽  
Vol 47 (18-19) ◽  
pp. 2487-2497 ◽  
Author(s):  
Theocharis Baxevanis ◽  
Michael Plexousakis
Keyword(s):  
High Temperature ◽  
Creep Compliance ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Continuous Fiber

scholarly journals The Effect of Random Load on Life Prediction of High-Temperature Ceramic Matrix Composites

2020 ◽  
Author(s):  
En-Zhong Zhang
Keyword(s):  
High Temperature ◽  
Fatigue Life ◽  
Life Prediction ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Random Loading ◽  
Mechanism Model ◽  
Safety And Reliability

High-temperature ceramic matrix composites (CMCs) are widely used in hot section components of aeroengine, and random loads have an important effect on their safety and reliability during aircraft operation. The current fatigue life prediction model of CMC is divided into macrophenomenon model and microdamage mechanism model. In this chapter, the fatigue life of fiber-reinforced ceramic matrix composites is investigated. The fatigue life of the fiber-reinforced ceramic matrix composites is predicted by micromechanical methods. The effect of random loading on fatigue life is analyzed and compared with constant peak stress fatigue life. The influence of composite constitutive properties on fatigue fracture is also discussed.

Verification of an EBC’s Protective Capability by First-Stage Evaluation in a High Temperature, High-Pressure Furnace

2003 ◽  
Author(s):  
Karren L. More ◽  
Peter F. Tortorelli ◽  
Larry R. Walker
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Microstructural Analysis ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Degradation Mechanisms ◽  
Continuous Fiber ◽  
Environmental Barrier Coatings ◽  
High Temperature High Pressure

High-temperature, high-pressure exposure furnaces (commonly referred to as Keiser Rigs) have been used successfully to evaluate the ability of environmental barrier coatings (EBCs) on continuous fiber-reinforced ceramic matrix composites and monolithic Si3N4 to protect the underlying substrate at high temperatures and H2O pressures. The ORNL rig provides for a relatively inexpensive way to conduct high sample throughput, first-stage evaluation of an EBCs protective capability on small ceramic specimens under a range of temperatures, pressures, and H2O contents. The exposure of the EBCs in the Keiser Rig is coupled with extensive microstructural analysis to evaluate EBC failure and degradation mechanisms.

Sign in / Sign up

Export Citation Format

Share Document