Statistical theory of interfacial shear strength distribution, and its applications to carbon-fiber reinforced polymer composites
The objectives of this research are to develop a statistical theory of interfacial shear strength (IFSS), and to apply this theory to diagnose the effect of electrodeposited coatings on carbon fiber on the IFSS in a single filament composite. KR138S, titanium di(dioctyl pyrophosphate) oxyacetate, and P-30 (ammonium polyphosphate), which have been shown to minimize fiber lofting, were selected for electrodeposition and evaluation of their effect on IFSS. The statistical theory of IFSS was developed by treating both the fiber fracture stress and the ultimate fragmentation length as dependent random variables. The single filament composite technique was used to get the fragmentation length distribution of the carbon fiber embedded in the epoxy matrix. Various models were tried to fit the empirical strength distribution and the empirical fragmentation length distribution. Kolmogorov-Smirnov goodness-of-fit test was used to test the goodness-of-fit of the proposed models.
- OSTI ID:
- 5718341
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360303* -- Composite Materials-- Mechanical Properties-- (-1987)
360403 -- Materials-- Polymers & Plastics-- Mechanical Properties-- (-1987)
CARBON FIBERS
COATINGS
COMPOSITE MATERIALS
ELECTRODEPOSITED COATINGS
FIBERS
MATERIALS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
SHEAR PROPERTIES
STATISTICAL MODELS