Obstacles to High Temperature Cyclic Structural Durability of Continuous-Fiber MMCs

  • Gary R. Halford
Conference paper


Increases in high temperature cyclic structural durability are being sought constantly. Materials for the next generations of machines must be designed to resist higher stresses and strains, and for elevated temperature use, must also resist time-dependent, thermally-activated damage mechanisms such as creep and oxidation. If mission usage involves temperature excursions, thermal-gradient induced stresses and strains will be superimposed on mechanical stresses and strains. The combined strains adversely interact with environmental attack mechanisms. The end result is a complex cyclic variation of strain, stress and temperature, with time-dependent creep, diffusion, oxidation, etc.


Strain Range Continuous Fiber Thermal Expansion Mismatch Thermomechanical Fatigue Tungsten Fiber 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Gary R. Halford
    • 1
  1. 1.Lewis Research CenterNASAClevelandUSA

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