Chapter 47. Fracture Toughness Testing of Graded Particulate Composites

  1. John B. Wachtman Jr.
  1. Todd L. Jessen

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310588.ch47

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

How to Cite

Jessen, T. L. (1989) Fracture Toughness Testing of Graded Particulate Composites, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310588.ch47

Author Information

  1. U.S. Naval Research Laboratory Washington, DC

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374870

Online ISBN: 9780470310588

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Keywords:

  • crack-free seal;
  • wavelength dispersive spectroscopy;
  • coefficients of thermal expansion;
  • metal seals;
  • expansion glass-ceramics

Summary

A series of 0, 10, and 25 vol% metal particulate/glass matrix composites in which the volume fraction of composite was both constant and graded across the specimen were prepared. Double-cantilever-beam fracture toughness results show that the graded fraction composites generally had equivalent values to the constant fraction specimens despite lower overall volume fraction particulate phase and composite density. Additionally, these results indicate the existence of a minimum composite layer thickness necessary for maximum toughening.