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Evaluation of the Fracture Strength for Silicon Carbide Layers in the Tri‐Isotropic‐Coated Fuel Particle
Author(s) -
Hong SeongGu,
Byun ThakSang,
Lowden Richard A.,
Snead Lance L.,
Katoh Yutai
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.01367.x
Subject(s) - materials science , weibull distribution , fracture (geology) , silicon carbide , composite material , isotropy , particle (ecology) , flexural strength , test method , optics , paleontology , statistics , physics , mathematics , oceanography , biology , geology
A program to develop new methods to measure the fracture strength of the chemical vapor deposition SiC coatings in nuclear fuel particles has been carried out. Internal pressurization and crush test techniques were developed and applied to prototype‐sized tubular and hemispherical shell specimens. The fracture strength measured from each test method applying the Weibull two‐parameter distribution, and Weibull parameters were measured. It was shown that data generated with each test technique were independent of the test technique applied. This implies that the developed test methods are reliable and provide reasonable strength data. For the same material, fracture strength varied with the specimen geometry and loading configuration. These size and loading configuration effects on the fracture strength are explained with the concept of effective surface.