Chapter 27. Crack Deflection at Structured Interlayers

  1. John B. Wachtman Jr.
  1. C Marcus Warwick and
  2. William J Clegg

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314784.ch27

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5

How to Cite

Warwick, C. M. and Clegg, W. J. (1995) Crack Deflection at Structured Interlayers, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314784.ch27

Author Information

  1. University of Cambridge Department of Materials Science and Metallurgy Pembroke Street Cambridge CB2 3QZ UK

Publication History

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

ISBN Information

Print ISBN: 9780470375389

Online ISBN: 9780470314784

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Keywords:

  • combustion;
  • convection;
  • vertical-draw machines;
  • thermal shock;
  • thermocouples

Summary

Large scale structured interfaces, consisting of a single crack bridged by ligaments, can be used to deflect cracks in a single phase material. An interface containing 1 mm diameter bridging ligaments with a bridged area fraction of 0.1 deflects a primary crack during a 4-point bend test in PMMA. This type of interface offers advantages over graphitic interlayers if it is used in ceramic laminates. A low area fraction of bridging ligaments promotes crack deflection at structured interfaces.