In-Plane Effective Thermal Conductivity of Symmetric, Diamond-Weave Screen Laminates

[+] Author and Article Information
Jun Xu

Mechanical Engineering, 585 Purdue Mall,  Purdue University, West Lafayette, Indiana 47907xu31@purdue.edu

Richard A. Wirtz

Mechanical Engineering Department∕MS 312  University of Nevada Reno, Reno, Nevada 89557rawirtz@unr.edu

J. Electron. Packag 127(3), 353-356 (Oct 31, 2004) (4 pages) doi:10.1115/1.1997162 History: Received November 11, 2003; Revised October 31, 2004

Algebraic models of porosity, specific surface area, and in-plane effective thermal conductivity for stacked, two-dimensional symmetric diamond-weave screen laminations are developed and benchmarked with laboratory experiments. Diamond-weave laminations are found to have greater metal fractions and specific surface area than equivalent orthogonal-weaves. With the weave angle smaller than 90°, the structure also has a much higher effective thermal conductivity.

Copyright © 2005 by American Society of Mechanical Engineers
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Figure 1

Plan and A-A section views for a screen unit cell

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Figure 2

Plots of reduced metal fraction for diamond-shaped symmetric screen laminates with different weave angles

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Figure 3

Transformed unit cell and thermal circuit

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Figure 4

Reduced dimensionless in-plane effective thermal conductivity of diamond-shaped symmetric screen laminates with two typical values of Md-product, as a function of the weave angle (2θ)

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Figure 5

The ratio of reduced effective in-plane conductivity of diamond weaves to equivalent orthogonal weaves as a function of 2θ

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Figure 6

Effect of in-plane rotation on Ke of orthogonal plain-weave laminates with M1=M2,(a) heat flux along one filament axis, (b) heat flux not along any filament axis

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Figure 7

A bonded single-layer diamond-shaped isotropic screen laminate

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Figure 8

Experimental measurements of the reduced dimensionless in-plane effective thermal conductivities of symmetric diamond-shaped screen laminates

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Figure 9

Experimental measurements of the reduced dimensionless in-plane effective thermal conductivities of orthogonal isotropic screen laminates with different orientation




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