Experimental study of dynamic air permeability for woven fabrics

Xiao, Xueliang and Zeng, Xuesen and Bandara, Palitha and Long, Andrew (2012) Experimental study of dynamic air permeability for woven fabrics. Textile Research Journal, 82 (9). pp. 920-930. ISSN 0040-5175

Abstract

Dynamic permeability is relevant to textile applications subjected to fluid/gas flow under high pressure, such as automotive airbags, wearable airbags and parachute fabrics. Dynamic permeability can be determined when a porous medium is tested under transient pressure conditions. This paper utilizes a reliable approach to measure and characterize dynamic permeability for woven fabrics. The experimental principle is based on the ideal gas law and the non-linear Forchheimer equation. Compared with static permeability measured under a constant low pressure, the dynamic permeability is an intrinsic property determined by change of fabric geometry and structure due to a high-pressure load. The pressure-induced deformation is identified, including effects on fiber and yarn arrangement, yarn porosity and fabric thickness. The level of deformation is a function of the number of fabric layers and initial pressure drop. The experimental results show that the dynamic permeability is higher than the static permeability for loose fabric, while it is lower for tight fabrics. For tight fabric, more fabric layers and a lower initial pressure can reduce the difference between the static and the dynamic permeability. Analytical models are used to explain and predict both static and dynamic permeability.


Statistics for USQ ePrint 31548
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 15 Jun 2017 01:08
Last Modified: 10 Jul 2017 05:21
Uncontrolled Keywords: analytical prediction; deformation; dynamic permeability; woven fabric; analytical predictions; fabric thickness; Forchheimer equation; high pressure; Ideal gas law; initial pressure; pow pressures; porous medium; textile applications; transient pressures; mechanical Properties; synthetic and natural fibers; textile technology; accidents and accident prevention; materials science
Fields of Research : 09 Engineering > 0910 Manufacturing Engineering > 091012 Textile Technology
09 Engineering > 0902 Automotive Engineering > 090204 Automotive Safety Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1177/0040517511429605
URI: http://eprints.usq.edu.au/id/eprint/31548

Actions (login required)

View Item Archive Repository Staff Only