Affiliation of Author(s):民航学院
Journal:MATERIALS
Key Words:ceramic-matrix composites (CMCs) oxidation matrix multicracking interface debonding
Abstract:In this paper, the synergistic effects of stress rupture and cyclic loading on the strain response of fiber-reinforced ceramic-matrix composites (CMCs) at elevated temperature in air have been investigated. The stress-strain relationships considering interface wear and interface oxidation in the interface debonded region under stress rupture and cyclic loading have been developed to establish the relationship between the peak strain, the interface debonded length, the interface oxidation length and the interface slip lengths. The effects of the stress rupture time, stress levels, matrix crack spacing, fiber volume fraction and oxidation temperature on the peak strain and the interface slip lengths have been investigated. The experimental fatigue hysteresis loops, interface slip lengths, peak strain and interface oxidation length of cross-ply SiC/MAS (magnesium alumino-silicate, MAS) composite under cyclic fatigue and stress rupture at 566 and 1093 degrees C in air have been predicted.
ISSN No.:1996-1944
Translation or Not:no
Date of Publication:2017-02-01
Correspondence Author:llb
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Lecturer
Education Level:南京航空航天大学
Degree:Doctoral Degree in Engineering
School/Department:College of Civil Aviation
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