Air permeability of polyester nonwoven fabrics
AUTEX Research Journal, 2015 Air permeability is one of the most important properties of non-woven fabrics in many applications. This paper aims to investigate the effects of thickness, porosity and density on the air permeability of needle-punched non-woven fabrics and compare the ...
Zhu Guocheng +3 more
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Air permeability of thermally modified hemlock wood
Les, 2022 Western hemlock (Tsuga heterophylla) is a prevalent coastal species in British Columbia (BC). Its wood has a high potential for thermal modification, a process that can affect numerous physical properties, including air permeability.
Yaohui Liu, Stavros Avramidis
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Correlation of Air Permeability to Other Breathability Parameters of Textiles. [PDF]
Polymers (Basel), 2021 In the field of textile comfort of smart textiles, the breathability of the material is very important. That includes the flow of air, water and water vapours through the textile material.
Adámek K, Havelka A, Kůs Z, Mazari A.
europepmc +2 more sources
Relationship between air diffusivity and permeability coefficients of cementitious materials
RILEM Technical Letters, 2020 In this study, the relationship between air diffusivity and permeability in cementitious materials was investigated to theoretically investigate the relationship between diffusion and air permeability coefficients.
Yuya Sakai
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Journal of Natural Fibers, 2022 This study investigates the knitted fabrics’ air permeability and water vapor resistance as complex phenomena of the interaction between the fiber nature, fabric structural characteristics and, different wet processes.
Aleksandra Ivanovska +4 more
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Multilayer cotton fabric porosity and its infl uence on permeability properties [PDF]
Tekstilec, 2018 Apart from their soft feel and good water absorbency, cotton fabrics are also characterised by good heat conductivity, air permeability and breathing. By increasing the open surface of one-layer fabrics, their air and water vapour permeability, and heat ...
Klara Kostajnšek, Krste Dimitrovski
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Effect of air permeability on stability of supersonic parachute
Aviation, 2021 A compressible air permeability model is developed to simulate the aerodynamic performance of the supersonic porous canopy. And a single-degree-of-freedom model is applied to analyse the static stability of the parachute.
Xue Yang
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The impact of compaction, moisture content, particle size and type of bulking agent on initial physical properties of sludge-bulking agent mixtures before composting [PDF]
, 2012 This study aimed to experimentally acquire evolution profiles between depth, bulk density, Free Air Space (FAS), air permeability and thermal conductivity in initial composting materials.
Huet, Joachim +8 more
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Analysis of Air Permeability of Insulated Masonry Walls
Energies, 2020 Recently, the construction of external ventilated walls has become popular for public and office buildings. These blocks are used without internal rendering because of their good interior surface, stable dimensions and various filling of masonry joints ...
Valdemaras Geležiūnas +4 more
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Permeability and dynamic elastic moduli of controlled porosity ultra-precision aerostatic structures [PDF]
, 2014 Porous ceramic aerostatic bearings enable precise and smooth motion and improved stiffness compared with widely used orifice restrictor bearings. However, the processing techniques so far used are too complex or rely in lowering the sintering temperature
Corbett, John +2 more
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