Fibers and Polymers

, Volume 14, Issue 3, pp 494–499 | Cite as

Modelling and experimental studies of air permeability of nonuniform nonwoven fibrous porous media

  • Dipayan Das
  • S. M. Ishtiaque
  • S. V. Ajab Rao
  • Behnam Pourdeyhimi
Article
First Online:
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Abstract

The fibrous porous materials stand out as a unique class of porous media. The air permeability of these media is very important for a wide variety of medical and technical applications. It is observed that the air permeability of these media is different at different locations owing to the nonuniformity in fibre packing density. This observation is taken into consideration while developing an analytical model of air permeability of nonuniform fibrous porous media. This model is reported in this article and demonstrated with the help of practical examples of real nonwoven fibrous porous materials. The theoretical results are found to be in satisfactory agreement with the experimental ones.

Keywords

Nonwoven Air permeability Packing density Nonuniformity Model Experiment 
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Copyright information

© The Korean Fiber Society and Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Dipayan Das
    • 1
  • S. M. Ishtiaque
    • 1
  • S. V. Ajab Rao
    • 1
  • Behnam Pourdeyhimi
    • 2
  1. 1.Department of Textile TechnologyIndian Institute of Technology DelhiNew DelhiIndia
  2. 2.The Nonwovens InstituteNorth Carolina State UniversityRaleighUSA

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