Modeling and numerical analysis of compression molding of three-dimensional thin parts with curing process
Article Abstract:
The simulations of flow, heat transfer and reaction kinetics during the compression molding of thin three-dimensional parts are possible by a new numerical model based on a moving boundary condition for the drag motion of an upper mold of a non-planar shape or for the apparent slipping events of particle filled materials. The part thickness and the mold closing velocity influence the gap-wise distributions of the temperature and degree of cure. The flow pattern is affected by the moving boundary conditions and the degree of cure is affected by temperature.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1995
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An experimental investigation of resin flow sensing during molding processes
Article Abstract:
Experimental analysis of the subsystems used for sensing resin flow dynamics during molding reveals that a DC circuitry-based electronic sensor is efficient in monitoring the resin flow by determining the electrical properties of the circuit. Alteration of the circuitry to monitor the resin flow at different positions in the circuit enhances the response time of the subsystem. One- and two-dimensional experiments validate the new sensing concept of resin flow dynamics.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1995
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Effect of cure state on stress relaxation in 3501-6 epoxy resin
Article Abstract:
Creep tests were undertaken on a 3501-6 epoxy resin at several different cure states. The isothermally cured Beam specimens were tested in three-point bending to obtain creep compliance. It was found that direct inversion was adequate for fully cured specimens, although the technique underpredicts the relxation modulus and transition for partially cured specimens. The results were compared with stress relaxation data from Kim and White.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1997
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