Chapter 27. Fiber Architecture Design for CMC Engine Seal

  1. John B. Wachtman Jr
  1. Frank K. Ko

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314715.ch27

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4

How to Cite

Ko, F. K. (1995) Fiber Architecture Design for CMC Engine Seal, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314715.ch27

Author Information

  1. Erin Ross and Charles Lei Fibrous Materials Research Center Department of Materials Engineering Drexel University Philadelphia, PA 19104

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1995

ISBN Information

Print ISBN: 9780470375372

Online ISBN: 9780470314715

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Keywords:

  • framework;
  • seal;
  • orientation;
  • parameters;
  • densification

Summary

Preform fiber architecture plays an important role in the performance and processing of composites. In the framework of integrated design and manufacturing, the fiber architecture and preform processing parameters by the 3-D braiding process were determined for the CMC engine seal. Based on the Finite Element Analysis of stress and deflection of the seal under various temperature environment the required fiber orientation and volume fraction distribution were determined. These engineering parameters were translated to braiding machine parameters through geometric and mechanistic modeling. In order to meet the required axial/circumferential strength of 104 MPa (15 Ksi) and radial strength of 35 MPa (5 Ksi), it was concluded from this first phase study that Nextel 312 can be fabricated to meet the design requirements using a lxl construction and an appropriate level of axial yarns by the 3-D braiding process.