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Measuring Interphase Recession by Fiber Push‐In Testing
Author(s) -
Lewinsohn Charles A.,
Henager Charles H.,
Jones Russell H.,
Eldridge Jeffrey I.
Publication year - 2001
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.1151-2916.2001.tb00754.x
Subject(s) - interphase , materials science , ceramic matrix composite , composite material , fiber , bridging (networking) , ceramic , recession , computer science , computer network , genetics , biology , keynesian economics , economics
A novel technique for measuring interphase recession in ceramic‐matrix composites (CMCs) due to oxidation is described. The technique involves fiber push‐in testing and analysis of the load–displacement curves. Fiber push‐in tests were conducted on carbon‐coated Hi‐Nicalon SiC fibers in a CVI SiC matrix, where the carbon interphase had recessed due to oxidation. Estimates of interphase recession distances from analysis of fiber push‐in tests are in reasonable agreement with measurements made by optical microscopy. Besides measuring the recession distance, the fiber push‐in test can be used to investigate environmental effects on fiber bridging.