Fracture of aluminum phosphate/alumina matrix silicon carbide fiber reinforced laminated composites
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Authors
Li, Hong
Issue Date
1992
Type
Dissertation
Language
en_US
Keywords
Aluminum Phosphate , Alumina Matrix Silica Carbide Fiber , Reinforced Laminated Composites , Mackay Theses and Dissertations Grant Collection
Alternative Title
Abstract
The fracture of SiC/AliO:,-AlP04 cementitious matrix, 2D woven fabric, laminated composites was investigated from room temperature to 1200 C. The differences in the mechanical properties were studied in terms of (i) the carbon coating on the fibers and (ii) temperature. A significant result of this thesis was the major effect of the matrix bond phase transition of the Al.P04 on the fracture resistance. A distinct transition of the fracture from toughened-to-embrittled was observed at 600 C for the three composites. For temperatures below 600 C, the carbon coating promotes a weak interf acial bonding at the fiber/matrix interface. Consequently, fiber debonding and fiber pull-out contribute to the rising R-curves of the composites. At temperatures above 600 C, the thermally induced clamping stresses on the fibers are large, while the effect of the carbon coating is insignificant. As a result, the interfacial bonding at the fiber/matrix interface is very strong. The lack of the fiber debonding and fiber pull-out result in a flat R-curves for these composites.
Description
Thesis Number: 2903.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)