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By Nicolas Boyard

This ebook addresses basic info, stable practices and examples approximately thermo-physical houses, thermo-kinetic and thermo-mechanical couplings, instrumentation in thermal technology, thermal optimization and infrared radiation.

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Extra resources for Heat Transfers in Polymer Composite Materials: Forming Processes

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Viscous dissipation is generally negligible because of the low flow velocities in these phases. The source term must be of course taken into account adequately for semi-crystalline polymers. It is related to the kinetics of crystallization and its release participates in the coupling between the phase change and heat transfer. Provided that the homogenization is possible in the composite, the source is weighted by the weight fraction of the matrix. This question of homogenization is not trivial and research works remain to be undertaken to indicate in which circumstances it is possible.

The heat flux sensors have a time constant lower than 5 ms. Indeed, the thermocouples are semi-intrinsic with separated junctions. The metal of the sensor itself ensures the electric continuity. The sensor thermocouples are K type (the thermoelectric power of about 40 μV/°C). This low voltage generates acquisition difficulties and amplification of the signal is necessary. 8. 9 and we intend to use it to illustrate the power of relevant thermal analysis. The mold temperature before the injection is set to 140°C, whereas the BMC is maintained at 40°C in the injection unit.

Comportement thermique des semi-cristallins injectés. Application à la prédiction des retraits, PhD Thesis, University of Nantes, 1998. , Caractérisation et simulation des processus de transferts lors d’injection de résine pour le procédé RTM, PhD Thesis, University of Nantes, 1999. , Etude et modélisation des transferts thermiques lors de la solidification de pièces injectées en polymère semi-cristallin chargé de fibres, PhD Thesis, University of Nantes, 2006. , SOBOTKA V. , “A heat transfer analysis of injection molding of fiber-reinforced poly (M-xylylene Adipamide)”, International Journal of Material Forming, vol.

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