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Micro-Macro Acoustic Modeling of Heterogeneous Foams with Nucleation Perturbation

Publication ,  Conference
Nguyen, CT; Guilleminot, J; Detrez, F; Langlois, V; Bornert, M; Duval, A; Perrot, C
Published in: SAE Technical Papers
September 30, 2020

The properties of a polyurethane foam are greatly influenced by the addition of graphite particles during the manufacturing process, initially used as a fire retardant. These thin solid particles perturbate the nucleation process by generating bubbles in their immediate vicinity. A large body of work has focused on foams that are reasonably homogeneous. In this work, we propose a modeling approach for inhomogeneous foams that includes membrane effects and allows pore size distributions to be accounted for. The cellular structure of the foam is obtained through a random Laguerre tessellation optimized from experimental properties. The structure of real foam samples is analyzed using X-ray computed tomography and scanning electron microscopy, followed by image processing, to create three-dimensional, digital models of the samples. The corresponding effective material parameters, including the permeability, the tortuosity and the viscous characteristic length, are subsequently computed by applying a numerical homogenization approach. All the numerical data are presented, discussed and gauged against experimental results.

Duke Scholars

Published In

SAE Technical Papers

DOI

EISSN

0148-7191

Publication Date

September 30, 2020

Issue

2020

Related Subject Headings

  • 4014 Manufacturing engineering
  • 4002 Automotive engineering
  • 0910 Manufacturing Engineering
  • 0902 Automotive Engineering
 

Citation

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Nguyen, C. T., Guilleminot, J., Detrez, F., Langlois, V., Bornert, M., Duval, A., & Perrot, C. (2020). Micro-Macro Acoustic Modeling of Heterogeneous Foams with Nucleation Perturbation. In SAE Technical Papers. https://doi.org/10.4271/2020-01-1526
Nguyen, C. T., J. Guilleminot, F. Detrez, V. Langlois, M. Bornert, A. Duval, and C. Perrot. “Micro-Macro Acoustic Modeling of Heterogeneous Foams with Nucleation Perturbation.” In SAE Technical Papers, 2020. https://doi.org/10.4271/2020-01-1526.
Nguyen CT, Guilleminot J, Detrez F, Langlois V, Bornert M, Duval A, et al. Micro-Macro Acoustic Modeling of Heterogeneous Foams with Nucleation Perturbation. In: SAE Technical Papers. 2020.
Nguyen, C. T., et al. “Micro-Macro Acoustic Modeling of Heterogeneous Foams with Nucleation Perturbation.” SAE Technical Papers, no. 2020, 2020. Scopus, doi:10.4271/2020-01-1526.
Nguyen CT, Guilleminot J, Detrez F, Langlois V, Bornert M, Duval A, Perrot C. Micro-Macro Acoustic Modeling of Heterogeneous Foams with Nucleation Perturbation. SAE Technical Papers. 2020.

Published In

SAE Technical Papers

DOI

EISSN

0148-7191

Publication Date

September 30, 2020

Issue

2020

Related Subject Headings

  • 4014 Manufacturing engineering
  • 4002 Automotive engineering
  • 0910 Manufacturing Engineering
  • 0902 Automotive Engineering