The effect of thermal contact resistance on the thermosetting pultrusion process

Baran, İsmet; Tutum, Cem Celal; Hattel, Jesper Henri

doi:10.1016/j.compositesb.2012.09.049

Cited by 58 publications

(57 citation statements)

References 26 publications

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“…In the contact surface, heat flow is a result of applying a heat source and a heat sink to the upper and lower specimens, respectively [9]. The temperature difference and heat flux are calculated by using the temperature distribution along the specimens.…”

Section: Methodsmentioning

confidence: 99%

Numerical investigation of thermal contact conductance between linear and curvilinear contacts

Shojaeefard

Tafazzoli

2018

Scientia Iranica

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Abstract-Heat transfer has considerable applications in different industries such as designing of heat exchangers, nuclear reactor cooling, control system for spacecraft and designing of microelectronics cooling. As the surfaces of two metals contact each other, this issue becomes so crucial. Thermal contact resistance (TCR) is one of the key physical parameters in heat transfer of mentioned surfaces. Measuring the experimental value of TCR in laboratory is highly expensive and difficult. As an alternative, numerical modeling methods could be engaged. In this study, inverse problem method solution is utilized as a proper method for estimation of TCR value. To that end, three different configurations (flat-flat, flat-cylinder, cylinder-cylinder) were utilized in two steady and unsteady state conditions to predict the value of TCR. A comparison between the measured and obtained values from the simulation shows that the errors for flat-flat, flat-cylinder and cylinder-cylinder configurations after 10 minutes from starting the experiment are 4.6074%, 0.1662% and 0.5622% , respectively. For steady state condition, the corresponding errors are 6.06e-3%, 1.506% and 0.846%, respectively. In conclusion, the final results establish the fact that the inverse problem method solution can predict TCR values between contacting surfaces.

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Section: Methodsmentioning

confidence: 99%

Numerical investigation of thermal contact conductance between linear and curvilinear contacts

Shojaeefard

Tafazzoli

2018

Scientia Iranica

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“…They also explained that polymerization reaction and rheological change of the resin strongly influenced the final properties and the quality of the pultruded products. Baran et al (2013b) highlighted that in pultrusion of thermo set composites, the exothermic reaction of the matrix begins when the composite reaches initiation temperature at which the gelation of the resin is also observed. Therefore, the thermosetting resin plays the important part in the degree of curing behaviour.…”

Section: Processing Parametersmentioning

confidence: 99%

“…The volume of resin that shrinks has been a higher contribution to the deformation of the cured resin compared to thermal expansion because of the different temperatures of the resin and the die has become smaller (Baran et al, 2013b). Joshi et al (2003) presented the analysis through finite element to study the behavior of pultruded glass reinforced epoxy composite at die inlet and die cooler temperature.…”

Section: Processing Parametersmentioning

confidence: 99%

Polymer Composite Manufacturing Using a Pultrusion Process: A Review

Fairuz¹,

Sapuan²,

Zainudin³

et al. 2014

American Journal of Applied Sciences

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Pultrusion is the one of technologies to fabricate the polymer composites to be used in many industries such as in aerospace, automotive and construction industries. The high performance pultruded products that are produced by this technique offer high fibre content of at least 70%. In order to produce high quality pultruded profiles, there are variables such as fibre impregnation, resin viscosity, pulling speed and curing temperature that have to be considered and these variables are discussed in this study. The review on the recent research in pultrusion process, types of resins used in pultrusion process and mechanical properties of pultuded composites are presented.

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“…As a consequence, the whole temperature field is established solving a unique nonlinear equation using the lumped material properties [4][5][6][7][8][9][10][11][16][17][18], which can be written as follows:…”

Section: Continuous Modelmentioning

confidence: 99%

“…Several researchers have performed numerical and experimental investigations on different aspects inherent to the pultrusion process, mainly focusing on issues related to heat transfer and cure [5][6][7][8][9][10][11], pressure distribution [12,13], and pulling force [14][15][16][17][18][19][20]. However, proposed models often neglect the interactions between involved phenomena, on the base of some simplifying assumptions.…”

Section: Introductionmentioning

confidence: 99%

Computational Approaches for Modeling the Multiphysics in Pultrusion Process

Carlone

Baran

Hattel

et al. 2013

Advances in Mechanical Engineering

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Pultrusion is a continuous manufacturing process used to produce high strength composite profiles with constant cross section. The mutual interactions between heat transfer, resin flow and cure reaction, variation in the material properties, and stress/distortion evolutions strongly affect the process dynamics together with the mechanical properties and the geometrical precision of the final product. In the present work, pultrusion process simulations are performed for a unidirectional (UD) graphite/epoxy composite rod including several processing physics, such as fluid flow, heat transfer, chemical reaction, and solid mechanics. The pressure increase and the resin flow at the tapered inlet of the die are calculated by means of a computational fluid dynamics (CFD) finite volume model. Several models, based on different homogenization levels and solution schemes, are proposed and compared for the evaluation of the temperature and the degree of cure distributions inside the heating die and at the postdie region. The transient stresses, distortions, and pull force are predicted using a sequentially coupled three-dimensional (3D) thermochemical analysis together with a 2D plane strain mechanical analysis using the finite element method and compared with results obtained from a semianalytical approach.

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The effect of thermal contact resistance on the thermosetting pultrusion process

Cited by 58 publications

References 26 publications

Numerical investigation of thermal contact conductance between linear and curvilinear contacts

Numerical investigation of thermal contact conductance between linear and curvilinear contacts

Polymer Composite Manufacturing Using a Pultrusion Process: A Review

Computational Approaches for Modeling the Multiphysics in Pultrusion Process

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