Hoop Tensile Strength Testing of Small Diameter Ceramic Particles

Journal Article · Mon Jan 01 04:00:00 EST 2007 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2006.11.013· OSTI ID:930794

Wereszczak, Andrew A ^[1]; Jadaan, Osama M. ^[2]; Lin, Hua-Tay ^[1]; Champoux, Gregory J ^[1]; Ryan, David P ^[1]

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1. ORNL
2. University of Wisconsin, Platteville

A method to measure hoop tensile strength of 1-mm-diameter brittle ceramic spheres was demonstrated through the use of a "C-sphere" flexure strength specimen. This innovative specimen geometry was chosen because a simple, monotonically increasing uniaxial compressive force produces a hoop tensile stress at the C-sphere's outer surface that ultimately initiates fracture. This enables strength quantification and strength-limiting flaw identification of the sphere itself. Such strength information is relevant to design optimization and durability assessments of ceramic fuel particles and breeder/multiplier pebbles for fusion whose surfaces are subjected to tensile stresses caused by thermal gradients, thermal transients, swelling, etc., during their manufacturing or service.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 930794
• Journal Information: Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Vol. 361; ISSN 0022-3115; ISSN JNUMAM
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
CERAMICS
FUEL PARTICLES
TEMPERATURE GRADIENTS
TENSILE PROPERTIES
TESTING