Hygrothermomechanical evaluation of transverse filament tape epoxy/polyester fiberglass composites
The static and cyclic load behavior of transverse filament tape (TFT) fiberglass/epoxy and TFY fiberglass/polyester composites, intended for use in the design of low-cost wind turbine blades, are presented. The data behavior is also evaluated with respect to predicted properties based on an integrated hygrothermomechanical response theory. Experimental TFT composite data were developed by the testing of laminates made by using composite layups typical of those used for the fabrication of TFT fiberglass wind turbine blades. Static properties include tension, compression, and interlaminar shear strengths at ambient conditions and at high humidity/elevated temperature conditions after a 500 hour exposure. Cyclic fatigue data were obtained using similar environmental conditions and a range of cyclic stresses. The environmental (temperature and moisture) and cyclic load effects on composite strength degradation are subsequently compared with the predictions obtained by using the composite life/durability theory. The results obtained show that the predicted hygrothermomechanical environmental effects on TFT composites are in good agreement with measured data for various properties including fatigue at different cyclic stresses.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI ID:
- 6027863
- Report Number(s):
- N-8315362; NASA-TM-83044; E-1491; CONF-830230-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
170602* -- Wind Energy Engineering-- Turbine Design & Operation
36 MATERIALS SCIENCE
360303 -- Composite Materials-- Mechanical Properties-- (-1987)
COMPRESSION STRENGTH
DYNAMIC LOADS
HUMIDITY
MACHINERY
MATERIALS
MECHANICAL PROPERTIES
REINFORCED MATERIALS
REINFORCED PLASTICS
SHEAR PROPERTIES
STATIC LOADS
STRESSES
TEMPERATURE EFFECTS
TENSILE PROPERTIES
THERMAL STRESSES
THERMODYNAMICS
TURBINE BLADES
TURBINES
TURBOMACHINERY
WIND TURBINES