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Piezoresistivity of Hi‐Nicalon Type‐S Silicon Carbide‐Based Fiber
Author(s) -
Kishimoto Akira,
Toyoguchi Ginjiro,
Ichikawa Hiroshi
Publication year - 2002
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.1151-2916.2002.tb00115.x
Subject(s) - materials science , composite material , silicon carbide , electrical resistivity and conductivity , ultimate tensile strength , ceramic , fiber , modulus , electrical engineering , engineering
Piezoresistivity effect of a silicon carbide‐based ceramic fiber (Nicalon family) was evaluated when a single fiber was buried at the tensile plane in a plastic rectangular bar subjected to bending to apply a stable tensile strain. Electrical resistivity change during the bending was monitored by a digital high‐resistance meter. From the fracture strain, Young's modulus, and the resistivity change, the piezoresistance coefficient is calculated to be 1.6 × 10 −11 m 2 /N, which is in agreement with the reported value for silicon carbide single crystals and our own reported value for polycrystalline silicon carbide ceramics.