Chapter 10. Exploration of the Weibull Modulus as a Function of Surface Preparation and Flexure Testing Conditions

  1. Don Bray
  1. Kristin Breder,
  2. Andrew A. Wereszczak and
  3. Mark J. Andrews

Published Online: 23 MAR 2010

DOI: 10.1002/9780470294499.ch10

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

Breder, K., Wereszczak, A. A. and Andrews, M. J. (1998) Exploration of the Weibull Modulus as a Function of Surface Preparation and Flexure Testing Conditions, 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.ch10

Author Information

  1. High Temperature Materials Laboratory, Oak Ridge National Laboratory Oak Ridge, TN 37831–6069

Publication History

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

ISBN Information

Print ISBN: 9780470375594

Online ISBN: 9780470294499

SEARCH

Keywords:

  • dense chromic oxide;
  • corrosion resistance;
  • implementation;
  • thermal shock resistance;
  • modifications

Summary

Weibull characteristic strength and modulus were studied as a function of machining severity and orientation. The characteristic strength decreased as machining conditions were more aggressive, and longitudinally machined specimens were consistently stronger than transversely machined specimens. The Weibull modulus did not vary systematically with machining conditions, but after pooling data from sets machined under identical conditions, a low Weibull modulus and a poor fit to the Weibull distribution was obtained. The results showed that the lack of reliability of the machining process effectively decreased the Weibull modulus, a critical parameter to be used in the life prediction of machined components.