Transverse squeeze flow of concentrated aligned fibers in viscous fluids

Shuler, Stephen; Advani, Suresh G.

doi:10.1016/0377-0257(96)01440-1

Cited by 79 publications

(66 citation statements)

References 16 publications

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“…This result is also supported by the results of Shuler and Advani. 19 Thus, the assumption of a Newtonian shear flow can be seen as an oversimplification. As a result, the occurring velocities will be underestimated and the pressures overestimated.…”

Section: Discussionmentioning

confidence: 99%

“…Shuler and Advani 19 have investigated the transversal viscosity depending on the shear rate for a PEEK/AS4 tape laminate. As a viscosity model for their measurements, they used a modified Carreau model (Eq.…”

Section: Fundamentals Concerning the Melt Shear Viscosity Of Polymersmentioning

confidence: 99%

“…Shuler and Advani. 19 report for η 0 a value of 2.5 Mpa s, for n a value of 50 s, and for n a value of 0.65 at a temperature of 370…”

Section: Calculation Of the Wall Shear Rates Under The Compaction Rollermentioning

confidence: 99%

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Simulation of the Tape‐Laying Process for Thermoplastic Matrix Composites

et al. 2012

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ABSTRACT:The paper presents an overview of the tape-laying process for thermoplastic matrix composites and the current state-of-the-art simulation of this process. As the current mathematical description of the process is partly based on a Newtonian shear flow and thermoplastics normally show a shear thinning behavior at higher shear rates, the assumption of a Newtonian shear flow has been verified. Therefore, the occurring shear rates have been calculated and compared with the data of a viscosity plot for a polyether ether ketone material. As a result of this analysis, the assumption of Newtonian shear flow is shown to be an oversimplification. C 2012 Wiley Periodicals, Inc. Adv Polym Techn 00: 1-9, 2012; View this article online at wileyonlinelibrary.com.

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Section: Discussionmentioning

confidence: 99%

Section: Fundamentals Concerning the Melt Shear Viscosity Of Polymersmentioning

confidence: 99%

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Simulation of the Tape‐Laying Process for Thermoplastic Matrix Composites

et al. 2012

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“…The constitutive modelling and associated experimental work on uniaxial and cross-ply CFRC laminates have received considerable attention over a period of more than a decade [7][8][9][10][11][12][13][14][15][16]. However, until recently, relatively little attention was paid to the characterisation and modelling of woven CFRC.…”

Section: Introductionmentioning

confidence: 99%

Shear characterisation of viscous woven textile composites: a comparison between picture frame and bias extension experiments

Harrison

Clifford

Long

2004

Composites Science and Technology

265

184

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“…Starting from the low-Reynolds number squeeze flow analysis, the momentum equations of Newtonian and power-law fluid could be simplified by lubrication theory (5,6) . In conjunction with the law of mass conservation, one could obtain the relationship between molding velocity and flow-field pressure.…”

Section: Fluid Mechanics Analysismentioning

confidence: 99%

Thermo-mechanical and Mold Flow Analyses of Die Shift in Wafer Reconstitution Process for Advanced Packaging Technology

Yang

Liu

Chen

et al. 2017

The Proceedings of the 5th International Conference on Industrial Application Engineering 2017

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In advanced wafer level packaging, a process called wafer reconstitution was developed as a strategy for decoupling IC/MEMS fabrication and packaging. However, several concern such as die-shift and warpage are found during reconstitution and they induce problems for subsequent wafer process. In this paper, it is desired to examine the key factor of die-shift on wafer. The investigation procedures including fluidic and thermomechanical effects are introduced. Preliminarily, the die-shift problem is deduced as interaction of fluid load, thermal expansion, shrinkage of molding compound and viscoelastic effect. To gain a deeper insight, simplified fluid model and finite element analyses have been constructed to mimic the entire process. As current results shown, defects of molding is not the dominating factor in reconstitution process as those usually reported previously. Meanwhile, simulation of thermal model has a consistent tendency with actual situation and is close to the observed defects. In summary, the presented model in this work is able to provide the basis failure phenomena for the wafer reconstitution. However, the situations are actually sensitive to processing parameters and a more sophisticated finite element model to include those detail processing should be further developed for further optimizing the reconstitution process for a better yield models in the near future.

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Transverse squeeze flow of concentrated aligned fibers in viscous fluids

Cited by 79 publications

References 16 publications

Simulation of the Tape‐Laying Process for Thermoplastic Matrix Composites

Simulation of the Tape‐Laying Process for Thermoplastic Matrix Composites

Shear characterisation of viscous woven textile composites: a comparison between picture frame and bias extension experiments

Thermo-mechanical and Mold Flow Analyses of Die Shift in Wafer Reconstitution Process for Advanced Packaging Technology

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