Frequency and Hold-Time Effects on Durability of Melt-Infiltrated SiC/SiC (Preprint)

Abstract

With the growing interest in ceramic matrix composites for multiple applications, the response of the material to service conditions needs to be understood. A range of durability assessment was undertaken on Melt Infiltrated (MI) SiC/SiC Ceramic Matrix Composite. MI SiC/SiC was tested under 30 Hz fatigue, 1 Hz fatigue, dwell fatigue (2 hour hold cycle) and creep loading. The applied stresses ranged from the micro-cracking initiation point to well above the saturation stress of the material. Test temperatures included room, 815 deg C and 1204 deg C. The effects of fatigue loading frequency and dwell (hold) time on the durability of the composite are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2011
Accession Number
ADA549069

Entities

People

  • G. Morscher
  • G. Ojard
  • J. Ahmad
  • R. John
  • Rachel A. Miller
  • U. Santhosh
  • Y. Gowayed

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Ceramic Matrix Composites
  • Composite Materials
  • Creep Tests
  • Frequency
  • Gas Turbines
  • Materials
  • Military Research
  • Resilience
  • Saturation
  • Silicon Carbide
  • Technical Ceramics
  • Tensile Strength
  • Tensile Testing
  • Turbines

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials