Chapter 12. Prediction of the Load-Bearing Capabilities Based on the First Matrix-Cracking Criterion for Plainweave Multilayered Nicalon/SiC Composites with lay-Ups of [0/20/60] and [0/40/60]

  1. Don Bray
  1. Wei Zhao,
  2. Peter K. Liaw and
  3. Niann-I Yu

Published Online: 23 MAR 2010

DOI: 10.1002/9780470294499.ch12

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

How to Cite

Zhao, W., Liaw, P. K. and Yu, N.-I. (1998) Prediction of the Load-Bearing Capabilities Based on the First Matrix-Cracking Criterion for Plainweave Multilayered Nicalon/SiC Composites with lay-Ups of [0/20/60] and [0/40/60], in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294499.ch12

Author Information

  1. Dept. of Materials Science and Engineering

Publication History

  1. Published Online: 23 MAR 2010
  2. Published Print: 1 JAN 1998

ISBN Information

Print ISBN: 9780470375594

Online ISBN: 9780470294499

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Keywords:

  • alkaline;
  • coefficient;
  • phosphate opal;
  • refractory products;
  • borosilicate

Summary

In the paper, the effects of the fiber-fabric lay-up on the load-bearing capability (the first matrix-cracking stress of the laminated CFCC) were theoretically studied for a Nicalon/SiC laminated ceramic composite with plain-weave Nicalon fiber reinforcements. The effects of laminate lay-ups, [0/20/60] and [0/40/60], and their associated lamina exact staclung sequences, on the load-bearing capability of the laminate were considered. The prediction of the load-bearing capability was based on the first matrix-cracking criterion. A micro-mechanics approach was firstly employed to compute the elastic modulus of a single Nicalon/SiC ceramic composite lamina with plain-weave reinforcements. Then, macro-mechanics models were employed to study the effects of the lamina orientation and/or laminate lay-up on: (1) the elastic modulus of the single lamina, and (2) the elastic stress distributions within the laminate. Finally, the load-bearing capability of the laminated ceramic composite was predicted. Variations in both the fiber-fabric lay-up, and the lamina stacking sequence give rise to differences in the stress distributions within the laminate, and thus, leading to the different load-bearing capabilities of the laminates. For a given lay-up, load-bearing capabilities could be optimized by selecting an optimum lamina stacking sequence. The strategy provided here can be served as guidelines for: (1) structural analyses with a given laminated composite, and (2) designs of new composite materials and new structures.