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Determination of the Elastic Modulus and Residual Stresses in Ceramic Coatings Using a Strain Gage
Author(s) -
Chiu ChinChen
Publication year - 1990
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.1151-2916.1990.tb05258.x
Subject(s) - materials science , composite material , residual stress , ceramic , coating , modulus , elastic modulus , strain gauge , compression (physics) , substrate (aquarium) , young's modulus , graphite , residual , mathematics , oceanography , algorithm , geology
Formulas based on the beam theory are derived for calculating the in‐plane elastic modulus and residual stresses in ceramic coatings. In addition to theoretical derivation, experimental data for SiC coating/graphite substrate composites are proposed. The results indicate that the modulus of SiC coatings is 359 GPa. The residual stresses are in compression and are functions of the ratio of substrate thickness to coating thickness.