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Infrared heating stage simulation of semi-transparent media (PET) using ray tracing method

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Abstract

Stretch blow molding or thermoforming processes includes an infrared heating stage of the thermoplastic preform by infrared heaters. The knowledge of the temperature distribution on the surface and through the thickness of the preform is important to make good prediction of thickness and properties of the manufactured parts. Currently in industry, the fitting of the process parameters is given by experience and is expensive. Our objective is to provide tools that are able to simulate the heat transfers between infrared heaters and preforms in order to reduce the fitting cost and to control the qualities of the end products. The optical method called “ray tracing” is used to simulate the radiative transfer. First, we compare the ray tracing method with the view factor method on a simple example: the heating of a square sheet by one infrared lamp. Then, we perform 3D heating stage simulations and compare with experiments. The ray tracing method allows to compute a source term in the transient heat balance equation. Then commercial finite element method softwares can be used to solve the heat balance equation.

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Acknowledgement

This work could not be possible without our industrial partner: O. Demangeon from Toshiba Lighting.

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Authors and Affiliations

  1. TCPIM, Ecole des Mines de Douai, 941 Rue C. Bourseul, BP 10838, 59508, Douai Cedex, France

    Benoit Cosson

  2. CROMeP, Université de Toulouse, Mines Albi, Campus Jarlard, 81013, Albi, Cedex 09, France

    Fabrice Schmidt, Yannick Le Maoult & Maxime Bordival

Authors
  1. Benoit Cosson
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  2. Fabrice Schmidt
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  3. Yannick Le Maoult
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  4. Maxime Bordival
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Corresponding author

Correspondence to Benoit Cosson.

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Cosson, B., Schmidt, F., Le Maoult, Y. et al. Infrared heating stage simulation of semi-transparent media (PET) using ray tracing method. Int J Mater Form 4, 1–10 (2011). https://doi.org/10.1007/s12289-010-0985-8

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  • DOI: https://doi.org/10.1007/s12289-010-0985-8

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