Chapter 66. Creep Deformation and Rupture Behavior of a Notched Oxide/Oxide Nextel(tm)720/AS Composite

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Reji John,
  2. Dennis J. Buchanan and
  3. Larry P. Zawada

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294628.ch66

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

How to Cite

John, R., Buchanan, D. J. and Zawada, L. P. (2000) Creep Deformation and Rupture Behavior of a Notched Oxide/Oxide Nextel(tm)720/AS Composite, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294628.ch66

Author Information

  1. Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/MLLN), Wright-Patterson Air Force Base, OH 45433-7817

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375686

Online ISBN: 9780470294628

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Keywords:

  • composite tubes;
  • mechanical properties;
  • nextel fibers;
  • axial tensile;
  • tensile strength

Summary

Oxide/oxide ceramic matrix composites such as Nextel(tm)720/Alumina-Silica(AS) are currently being demonstrated in high-temperature aerospace applications (≥1000°C). Many of these components containing holes and notches will be subjected to long-term exposures. Hence, the knowledge of the effect of sustained (creep) loading on the deformation and rupture of notched Nextel 720/AS was investigated. Unnotched and double-edge notched specimens were tested under tensile and sustained loading at 1100°C. Nextel(tm)720/AS is slightly notch-sensitive (∼15%) under tensile loading and significantly notch-sensitive (∼40%) under sustained loading for 100+ hours.