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Al–Al 2 O 3 Composites with Interpenetrating Network Structures: Composite Modulus Estimation
Author(s) -
Moon Robert J.,
Tilbrook Matthew,
Hoffman Mark,
Neubrand Achim
Publication year - 2005
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.1551-2916.2005.00115.x
Subject(s) - modulus , composite material , materials science , composite number , aggregate modulus , young's modulus , bulk modulus , specific modulus , tangent modulus , dynamic modulus , dynamic mechanical analysis , polymer
The effective Young's moduli of co‐continuous Al–Al 2 O 3 composites over the 5–97 vol% Al 2 O 3 composition range were experimentally measured and compared with theoretical composite modulus values predicted using the methods of Ravichandran, Tuchinskii, Hashin‐Shtrikman, and the effective medium approximation (EMA). The influence of phase morphology and the modulus ratio ( E 1 / E 2 ) of the constituent phases on the resulting experimental and calculated Young's modulus is discussed. For two‐phased co‐continuous composites with a modulus ratio greater than 5, the EMA, with an appropriate microstructural shape factor, was the most consistent method for approximating the composite Young's modulus over the entire composition range.