Rotational flexural strength of cylindrical brittle specimens

Wereszczak, Andrew A.; Steiner, Emily F.; Jadaan, Osama M.; Wiles, Randy H.; Kuwik, Brett S.

doi:10.1111/jace.18452

Rotational flexural strength of cylindrical brittle specimens

Journal Article · Sun Mar 27 00:00:00 EDT 2022 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/jace.18452· OSTI ID:1888937

^[1]; Steiner, Emily F. ^[1]; Jadaan, Osama M. ^[2]; ^[1]; Kuwik, Brett S. ^[3]

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)

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.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1888937

Journal Information:: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 7 Vol. 105; ISSN 0002-7820

Publisher:: American Ceramic SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
brittle materials
effective area
effective volume
flexure
rotation
strength

Rotational flexural strength of cylindrical brittle specimens

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References (11)

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