Strength Evaluation of PyC for TRISO Particles: Development of Equibiaxial Flexural Test

Technical Report · Mon Sep 01 00:00:00 EDT 2008

DOI:https://doi.org/10.2172/1244179· OSTI ID:1244179

Katoh, Yutai ^[1]; Kondo, Sosuke ^[1]; Snead, Lance Lewis ^[1]; Hunn, John D. ^[1]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

For the purpose of evaluating fracture strength of inner pyro-carbon (IPyC) for TRISO particles, a disc equibiaxial flexural test technique was developed and IPyC-relevant specimens fabricated in a test-run of fluidized-bed chemical vapor deposition were evaluated. It was demonstrated that the test technique developed is effective to determine the apparent fracture strength of thin specimen of PyC. Moreover, true strength was estimated from the acquired apparent strength values based on the result from finite element analysis. The estimated true strength values appeared reasonable for flexural strength of dense PyC. The influence of geometrical features introduced to the specimens due to the specific preparation procedures appeared insignificant.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1244179
• Report Number(s): ORNL/TM-2008/164; TRN: US1601039
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
PYROLYTIC CARBON
CHEMICAL VAPOR DEPOSITION
FRACTURE PROPERTIES
FINITE ELEMENT METHOD
FLEXURAL STRENGTH
FLUIDIZED BEDS
EVALUATION
MEASURING METHODS
ACCIDENT-TOLERANT NUCLEAR FUELS