Infrared curing simulations of liquid composites molding
- Universite de Toulouse (France)
Infrared radiation is an effective energy source to cure thermosetting polymers. Its usage is expected to reduce curing time in comparison with thermal heating and mold thermally regulated. In addition, because of the polymerization mechanism and instant on-off control of this power, an improvement in the final properties of the material is also expected. In this paper, we studied the infrared interaction with carbon (or glass) fibers reinforced epoxy matrix, where Liquid resin infusion (LRI) is used to manufacture the composite. Temperature of the composite is a key parameter that affects its mechanical properties and is controlled by the infrared emitters and the exothermic heat released from the polymerization. Radiative heat flux is computed using the in-lab developed software RAYHEAT. Then, the heat flux (or absorbed energy for glass fibers) is exported to the finite element based program COMSOLMULTIPHYSICS where heat balance equation is solved. This equation is coupled with the exothermic heat released during the curing process in order to predict the composite temperature versus time and degree of cure. Numerical simulations will be performed on planar parts (sheet shape) as well as curvilinear shapes. Experimental validations of the infrared curing carbon (glass)-epoxy composite system are presented in this paper Sheet surface temperature distribution are measured thanks to infrared camera. Kinetic parameters were estimated from differential scanning calorimeter (DSC) experimental data.
- OSTI ID:
- 21516703
- Journal Information:
- AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589667; (c) 2011 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALORIMETRY
CARBON
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
ENERGY SOURCES
EPOXIDES
FIBERGLASS
FIBERS
FINITE ELEMENT METHOD
GLASS
HEAT
HEAT FLUX
INFRARED RADIATION
MOLDING
POLYMERIZATION
REINFORCED MATERIALS
SURFACES
TEMPERATURE DISTRIBUTION
CALCULATION METHODS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
EVALUATION
FABRICATION
MATERIALS
MATHEMATICAL SOLUTIONS
NONMETALS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RADIATIONS
SIMULATION