Models for heat transfer in thermoplastic composites made by automated fiber placement using hot gas torch

Composites Part C: Open Access

Suong V. Hoa¹  Mehrshad Moghadamazad² 

[1] Concordia Center for Composites, Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Center for High Performance Polymers and Composites (CREPEC), Montreal, Quebec, Canada H3G1M8;Corresponding author.;

关键词: Transient heat transfer analysis;    Thermoplastic composites;    Automated Fiber Placement (AFP);    Thermal inputs;    Convection coefficient of heat transfer;    Inter-layer thermal contact resistance;   

DOI  :  

来源: DOAJ

【 摘 要 】

ABSTRACT: This paper presents a 2D transient heat transfer model, which has been developed using finite difference method for composites made by AFP process with a hot gas torch. The model includes non-linear distributions for the hot gas/air temperature and convection coefficients in the vicinity of composite, which are essential to increase the accuracy of the model. It is necessary not to just obtain the accurate maximum temperature of composite, but more importantly, the thermal gradients in the composite laminate. These thermal gradients have strong influence on the development of residual stresses and deformation in thermoplastic laminates made by AFP. In addition, the temperature dependencies of the material properties and inter-layer thermal contact resistance have been taken into account. Comparison of the experimental and theoretical results indicates how the accuracy of model increases by considering the above mentioned aspects.

【 授权许可】

Unknown