Chapter 12. Novel Real-Time Method for Measuring the Densification Rate of Carbon-Carbon Fiber-Matrix Composites and Other Articles (Invited Paper)

  1. Mrityunjay Singh and
  2. Todd Jessen
  1. Ilan Golecki and
  2. Dave Narasimhan

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294680.ch12

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

How to Cite

Golecki, I. and Narasimhan, D. (2001) Novel Real-Time Method for Measuring the Densification Rate of Carbon-Carbon Fiber-Matrix Composites and Other Articles (Invited Paper), in 25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3 (eds M. Singh and T. Jessen), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294680.ch12

Author Information

  1. Honeywell International Inc. (formerly Allied Signal Inc)., Corporate Materials Research and Development Laboratory 101 Columbia Road Morristown, NJ 07962 Phone (973) 455–4938; Fax (973) 455–4339; ilan.golecki@honeywell.com

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2001

ISBN Information

Print ISBN: 9780470375730

Online ISBN: 9780470294680

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Keywords:

  • infiltration;
  • isothermal;
  • carbon;
  • electromagnetic;
  • molybdenum

Summary

The instantaneous and cumulative mass rate of change of Carbon-Carbon (C-C) fiber-matrix composite articles is measured in real time, during densification. The densification rate is determined by contactless measurement of the change in electrical conductivity of the articles over time as the structures increase in mass. This method is applied to real-time process monitoring of the rapid densification by chemical vapor infiltration (CVI) of multiple, 3 cm thick C-C preform disks, as well as other types of thicker C-C preforms, using inductively-heated thermal-gradient isobaric CVI.