The thermoelastic properties of woven glass/epoxy substrates for multilayer circuit board applications were investigated and the influence of fabric geometry assessed. The woven fabric geometry of several commercially pressed boards was carefully characterized using optical microscopy. The elastic moduli and Poisson’s ratios were then measured in uniaxial tension, while the CTEs of the boards were measured using thermal mechanical analysis (TMA) at temperatures above and below the glass transition. Experimental data were compared to predictions from two new analytical models. One of the models, which does not use classical lamination theory, results in a significant improvement for the prediction of Poisson’s ratio and CTEs. Finally, a parametric study was performed to demonstrate the effect of fiber crimp on the properties of the fabric.
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March 1999
Technical Papers
Thermoelastic Properties of Plain Weave Composites for Multilayer Circuit Board Applications
N. R. Sottos,
N. R. Sottos
University of Illinois at Urbana-Champaign, Department of Theoretical and Applied Mechanics, 216 Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801
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J. M. Ockers,
J. M. Ockers
University of Illinois at Urbana-Champaign, Department of Theoretical and Applied Mechanics, 216 Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801
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M. Swindeman
M. Swindeman
University of Illinois at Urbana-Champaign, Department of Theoretical and Applied Mechanics, 216 Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801
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N. R. Sottos
University of Illinois at Urbana-Champaign, Department of Theoretical and Applied Mechanics, 216 Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801
J. M. Ockers
University of Illinois at Urbana-Champaign, Department of Theoretical and Applied Mechanics, 216 Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801
M. Swindeman
University of Illinois at Urbana-Champaign, Department of Theoretical and Applied Mechanics, 216 Talbot Laboratory, 104 South Wright Street, Urbana, IL 61801
J. Electron. Packag. Mar 1999, 121(1): 37-43 (7 pages)
Published Online: March 1, 1999
Article history
Received:
September 1, 1995
Revised:
September 28, 1998
Online:
November 5, 2007
Citation
Sottos, N. R., Ockers, J. M., and Swindeman, M. (March 1, 1999). "Thermoelastic Properties of Plain Weave Composites for Multilayer Circuit Board Applications." ASME. J. Electron. Packag. March 1999; 121(1): 37–43. https://doi.org/10.1115/1.2792659
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