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Adaptation of the chevron‐notch beam fracture toughness method to specimens harvested from diesel particulate filters
Author(s) -
Wereszczak Andrew,
Jadaan Osama,
Modugno Max,
Hatala Glenn,
Lance Michael
Publication year - 2017
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12653
Subject(s) - materials science , cordierite , chevron (anatomy) , ceramic , fracture toughness , composite material , beam (structure) , diesel fuel , porosity , fracture (geology) , structural engineering , waste management , paleontology , engineering , biology
Abstract The apparent fracture toughness of a porous cordierite ceramic was estimated using a large specimen whose geometry was inspired by the ASTM ‐C1421‐standardized chevron‐notch beam. Using the same combination of experiment and analysis used to develop the standardized chevron‐notch test for small, monolithic ceramic bend bars, an apparent fracture toughness of 0.6 and 0.9 MPa√m were estimated for an unaged and aged cordierite diesel particulate filter structure, respectively. The effectiveness and simplicity of this adapted specimen geometry and test method lends itself to the evaluation of (macroscopic) apparent fracture toughness of an entire porous‐ceramic, diesel particulate filter structure.