Comparative Study of Different Approaches in the Prediction of Transverse Thermal Conductivity

Rao, T. Srinivasa; Rao, G. Sambasiva; Gowd, B. Uma Maheswar

doi:10.1016/j.mspro.2014.07.219

Cited by 1 publication

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“…Prior to Srinivasa Rao et al (2014b), there was no distinction of the two approaches and the contributors of both methods tried to convince by comparing their results with experimental results, irrespective of the approach they followed. In the present work through thickness thermal conductivity of the composite obtained using both methods are compared.…”

Section: Introductionmentioning

confidence: 99%

Consistency of electrical analogy approach in the prediction of through thickness thermal conductivity of fiber reinforced plastic (FRP) composites with orientation of the square unit cell

Rao¹,

Rao²,

Gowd³

2015

Int. J. Phys. Sci.

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From the literature, it is found that two different criteria were followed for the prediction of transverse thermal conductivity (K 2 ) of fiber reinforced plastic (FRP) composites. In the first criterion, the internal anisotropy of the lamina is assumed negligible and K 2 is estimated using simple Fourier's law of 1-D heat conduction applied to representative volume element (RVE). Whereas in the second approach, an electrical analogy method is followed. To estimate the effect of internal anisotropy, through thickness thermal conductivity (K 3 ) of an FRP lamina is determined by both the approaches through finite element method for an RVE in the auxiliary plane. The problem is modeled in ANSYS 15 software. In the present paper studies are made for various volume fractions (0.1-0.75) and for various angles (20°-90°) made by the section plane with the fiber axis. It is observed that the through thickness thermal conductivity is consistent in the second approach, whereas in the first approach there is considerable variation (max 8.7%) with the orientation of the unit cell.

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Section: Introductionmentioning

confidence: 99%