Rotational flexural strength of cylindrical brittle specimens
Abstract
Conventional static flexural strength testing of brittle cylindrical rods only subjects a small fraction of the entire specimen's area or volume to the maximum tensile stress. Thus, a nonconservative measured strength likely results since most flaws on the surface or in the bulk are not subjected to a sufficiently high tensile stress that can cause fracture. Here, to mitigate this, a rotational flexural tester and corresponding test method were developed whereby rotation and monotonically increasing three-point flexure were superimposed to investigate fracture response of solid glass cylinders. This combination of rotation and flexure subjects more area and volume of a cylindrical test specimen to tensile stress than a standard static (nonrotating) flexural test. As anticipated, failure stresses were lower for the rotational flexural test. Expressions for effective area and volume are provided for rotating solid rods and tubes subjected to three-point, four-point, uniform, and uniformly distributed load bending configurations.
- Authors:
-
[1];
[1];
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of North Florida, Jacksonville, FL (United States)
- Oak Ridge Associated Univ., Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1888937
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the American Ceramic Society
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 7; Journal ID: ISSN 0002-7820
- Publisher:
- American Ceramic Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; brittle materials; effective area; effective volume; flexure; rotation; strength
Citation Formats
Wereszczak, Andrew A., Steiner, Emily F., Jadaan, Osama M., Wiles, Randy H., and Kuwik, Brett S. Rotational flexural strength of cylindrical brittle specimens. United States: N. p., 2022.
Web. doi:10.1111/jace.18452.
Wereszczak, Andrew A., Steiner, Emily F., Jadaan, Osama M., Wiles, Randy H., & Kuwik, Brett S. Rotational flexural strength of cylindrical brittle specimens. United States. https://doi.org/10.1111/jace.18452
Wereszczak, Andrew A., Steiner, Emily F., Jadaan, Osama M., Wiles, Randy H., and Kuwik, Brett S. Sun .
"Rotational flexural strength of cylindrical brittle specimens". United States. https://doi.org/10.1111/jace.18452. https://www.osti.gov/servlets/purl/1888937.
@article{osti_1888937,
title = {Rotational flexural strength of cylindrical brittle specimens},
author = {Wereszczak, Andrew A. and Steiner, Emily F. and Jadaan, Osama M. and Wiles, Randy H. and Kuwik, Brett S.},
abstractNote = {Conventional static flexural strength testing of brittle cylindrical rods only subjects a small fraction of the entire specimen's area or volume to the maximum tensile stress. Thus, a nonconservative measured strength likely results since most flaws on the surface or in the bulk are not subjected to a sufficiently high tensile stress that can cause fracture. Here, to mitigate this, a rotational flexural tester and corresponding test method were developed whereby rotation and monotonically increasing three-point flexure were superimposed to investigate fracture response of solid glass cylinders. This combination of rotation and flexure subjects more area and volume of a cylindrical test specimen to tensile stress than a standard static (nonrotating) flexural test. As anticipated, failure stresses were lower for the rotational flexural test. Expressions for effective area and volume are provided for rotating solid rods and tubes subjected to three-point, four-point, uniform, and uniformly distributed load bending configurations.},
doi = {10.1111/jace.18452},
journal = {Journal of the American Ceramic Society},
number = 7,
volume = 105,
place = {United States},
year = {Sun Mar 27 00:00:00 EDT 2022},
month = {Sun Mar 27 00:00:00 EDT 2022}
}
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