Characterization of mechanical and thermal properties of advanced composite pultrusions. Final report
- Mississippi Univ., University, MS (United States)
This report summarizes the work performed by the Composite Materials Group at the University of Mississippi to characterize the mechanical and thermal properties of pultruded advanced composite materials. Considerable progress has been made on characterizing the effects of pultrusion process variables on the structural/dynamic and thermal properties of a mono-fiber type graphite-epoxy composite material system. The effects of process parameters on the mechanical properties of a mono-fiber type fiberglass-epoxy were also investigated and correlated with the degree of cure using differential scanning calorimetry (DSC) studies. The mechanical properties and the failure mechanisms of these hybrids were compared with those of the mono-fiber type glass/epoxy and graphite/epoxy pultruded composites. The static properties examined were flexural strength and modulus, short-beam shear strength and tensile strength. For the dynamic (modulus and damping) studies, the impulse frequency response technique was used for exciting the flat specimens into flexural, and the round specimens into torsional, modes of vibration using appropriately designed test fixtures. The results of these tests demonstrate the potential for the cost-effective production of stiff, light and well damped composite products having a number of practical applications. A three-dimensional numerical model which utilizes a fixed control volume based finite difference approach was also developed to predict the axial, radial and circumferential temperature and degree of cure profiles, which were found to be in close agreement with experimental results.
- Research Organization:
- Electric Power Research Inst. (EPRI), Palo Alto, CA (United States); Mississippi Univ., University, MS (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 383658
- Report Number(s):
- EPRI-TR-106271; TRN: AHC29621%%104
- Resource Relation:
- Other Information: PBD: Aug 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
IACMI Project 4.2: Thermoplastic Composite Development for Wind Turbine Blades
Economic competitiveness of pultruded fiber composites for wind turbine applications