Tensile behavior and cyclic creep of continuous fiber-reinforced glass matrix composites at room and elevated temperatures
UNSPECIFIED (1997) Tensile behavior and cyclic creep of continuous fiber-reinforced glass matrix composites at room and elevated temperatures. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 6 (3). pp. 344-348. ISSN 1059-9495Full text not available from this repository.
In this study we investigated the stress-strain behavior at room and elevated temperatures and the tensile creep and cyclic creep response of a unidirectional SIC fiber-reinforced aluminosilicate glass matrix composite. The interfacial condition of the as-received material was measured by a push-out indentation technique. The stress-strain behavior was that expected for this kind of composite, i.e. ''pseudoductile'' behavior with extensive fiber ''pull-out'' at room temperature and brittle failure at intermediate temperatures (750 degrees C) due to oxidation embrittlement. The stiffness of the composite at 750 degrees C was analyzed for different loading rates, highlighting the influence of the loading rate on apparent composite stiffness, due to matrix softening. The creep studies were conducted at temperatures above and below the softening temperature of the glass (T-g, 745 degrees C) in air. The cyclic creep experiments showed the existence of exten sive viscous strain recovery during the unloading period. The creep strain recovery was quantified using strain recovery ratios. These ratios showed a slight dependence on the temperatures investigated (700 and 750 degrees C). The crept composites retained their ''graceful'' fracture behavior only partially after testing, indicating that oxidation of the fiber/matrix interface due to oxygen diffusion through the matrix occurred in the peripheral area of the samples.
|Item Type:||Journal Article|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Journal or Publication Title:||JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE|
|Number of Pages:||5|
|Page Range:||pp. 344-348|
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