The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Omer Berk Berkalp - One of the best experts on this subject based on the ideXlab platform.
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Air Permeability & Porosity in Spun-laced Fabrics
Fibres & Textiles in Eastern Europe, 2006Co-Authors: Omer Berk BerkalpAbstract:The relationship between Air Permeability and fabric characteristics such as fabric weight, thickness and density in a variety of nonwoven types has already been investigated. The effect of porosity on Air Permeability has also been thoroughly evaluated in numerous research works. However in this paper, we report the effects of the specific energy in hydroentan glement on the Air Permeability of the resultant fabric. It is shown that within the ranges of the measurements, energy is not the only factor that affects the Permeability. Although the same web weight is used in all trials, fabric weights and thicknesses did not show any clear or linear decrease when the energy given to the fabric was increased. The alteration of web weights and thicknesses under enhanced energy shows that entanglement mechanism in these nonwovens is not not as simple as we had expected. It is thought that the flow corridors in nonwovens are certainly very complex. This increased intricacy may be due to the randomness of nonwoven structures or the method of bonding such as the random hydroentanglement of spun-laced fabrics.
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Air Permeability porosity in spun laced fabrics
Fibres & Textiles in Eastern Europe, 2006Co-Authors: Omer Berk BerkalpAbstract:The relationship between Air Permeability and fabric characteristics such as fabric weight, thickness and density in a variety of nonwoven types has already been investigated. The effect of porosity on Air Permeability has also been thoroughly evaluated in numerous research works. However in this paper, we report the effects of the specific energy in hydroentan glement on the Air Permeability of the resultant fabric. It is shown that within the ranges of the measurements, energy is not the only factor that affects the Permeability. Although the same web weight is used in all trials, fabric weights and thicknesses did not show any clear or linear decrease when the energy given to the fabric was increased. The alteration of web weights and thicknesses under enhanced energy shows that entanglement mechanism in these nonwovens is not not as simple as we had expected. It is thought that the flow corridors in nonwovens are certainly very complex. This increased intricacy may be due to the randomness of nonwoven structures or the method of bonding such as the random hydroentanglement of spun-laced fabrics.
Rattanaphol Mongkholrattanasit - One of the best experts on this subject based on the ideXlab platform.
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Evaluating the Air Permeability Properties of Summer Cooling Towels
Materials Science Forum, 2020Co-Authors: Yim Ling Lam, Wen Yi Wang, Chi-wai Kan, Kasem Manarungwit, Wasana Changmuong, Jitti Pattavanitch, Wirat Wongphakdee, Rattanaphol MongkholrattanasitAbstract:Air Permeability is one of the thermal comfort properties of clothing and fabrics. This study evaluated the Air Permeability properties of summer cooling towels of different brands available in the market, “Perfect Fitness”, “N-rit” and “Cooldyxm” and an anonymous ice towel. The Air Permeability function of the cooling towels was evaluated instrumentally. Other than the Air Permeability property, other fabric specification such as fiber composition, fabric type, fabric weight, fabric thickness, yarn linearity and fabric density were measured. Some specifications were found to have good statistical correlation with the Air Permeability. Based on the experimental results and statistical analysis, the sample of Perfect Fitness was found to have the poorest cooling effect, whereas N-rit, Cooldyxm and Ice Towel samples had comparable Air Permeability properties. The best performance of Air Permeability was seen in N-rit sample. The underlying reason could be ascribed to the fabric structure and thickness. This study can provide some information for choosing cooling towel for practical use.
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An Analysis of Air Permeability of Men’s Quick-Dry Sportswear
E3S Web of Conferences, 2020Co-Authors: Yan-ngo Fan, Wen Yi Wang, Chi-wai Kan, Jitti Pattavanitch, Krailerck Visesphan, Kornchanok Boontorn, Thawatchai Intasean, Rattanaphol MongkholrattanasitAbstract:Air Permeability is one of the thermal comfort properties of clothing and fabrics. This study evaluated the quick dry properties of summer men’s T-shirts of different brands (Nike, Adidas, Laishilong and Columbia) by studying the Air Permeability behavior. Both Nike and Adidas samples were knitted by single jersey, while double jersey was used for Laishilong and Columbia T-shirts. The materials for Adidas, Laishilong and Columbia were polyester while Nike was made of cotton and polyester. Overall, both Nike and Adidas were found to perform better in terms of Air Permeability than those of Laishilong and Columbia.
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Evaluation on the Air Permeability Properties of the Mainstream Sportswear Brands
Applied Mechanics and Materials, 2020Co-Authors: Man Ting Lam, Wen Yi Wang, Chi-wai Kan, Kasem Manarungwit, Somchai Udon, Rattanaphol MongkholrattanasitAbstract:The present study investigated the Air Permeability of three representative sportswear brands products (OUDIKE, NIKE and an unknown brand bought from the boutique) in Hong Kong marketplace. It was found that NIKE sportswear had the highest Air Permeability (0.23kPa*s/m) among the samples, which indicates that it allows more Air flow passing through the textile and provides good comfort property to wearer, while OUDIKE samples showed the lowest Air Permeability in capacity (0.08kPa*s/m). The fiber content and fabric structure may be the reason that affects the Air Permeability. This study would provide a comparative information about Air Permeability property of the mainstream sportswear brands product in Hong Kong market.
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An Analysis of Air Permeability of Cotton-Fibre-Based Socks
Key Engineering Materials, 2019Co-Authors: Wen Yi Wang, Chi-wai Kan, Kwok Tung Hui, Kongkiat Maha-in, Salakchit Pukjaroon, Siriorn Wanitchottayanont, Rattanaphol MongkholrattanasitAbstract:Socks are the clothing preserving the foot in thermal neutrality and preventing foot from blister generating. The development of socks has been diversified like the type, materials, and function, etc. Socks with good quality are conducive to prevent foot disease or smelly odor from foot. The wearing comfort of socks can be affected by the fabric properties of Air Permeability. The present study aims to investigate the relationship between the fabric parameters and Air Permeability of knitted socks fabric. The ventilation of socks fabric was measured by the KES-F8 automatic Air Permeability tester. It was found that the Air Permeability of fabric was negatively proportional to the content of cotton, yarn count and thickness, before washing. Meanwhile, washing was found to increase the Air Permeability.
M Madhusoothanan - One of the best experts on this subject based on the ideXlab platform.
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Thermal resistance and Air Permeability of jute-polypropylene blended needle- punched nonwoven
2011Co-Authors: Sanjoy Debnath, M MadhusoothananAbstract:Thermal resistance and Air Permeability of needle-punched nonwoven fabric made from jute and polypropylene blends have been studied using the Box and Behnken factorial design to observe the effect of fabric weight, needling density and blend proportion on thickness, thermal resistance, specific thermal resistance, Air Permeability and sectional Air Permeability. Correlation matrix and cluster analysis have also been used to understand the relationship and grouping behaviour of the dependent and independent variables. It is observed that the thermal resistance and thickness increase but Air Permeability and sectional Air Permeability decrease significantly with the increase in fabric weight at all levels of jute contents. Significant ( p < 0.05000) negative correlations r = – 0.67 and r = – 0.61 exist between needling density & thermal resistance and needling density & specific thermal resistance respectively. The highest thermal resistance and specific thermal resistance have been obtained at 430 g/m 2 fabric weight and 150 punches/cm 2 needling density. All dependent variables are highly influenced by fabric weight (Euclidean distance ~ 560) which is a different cluster identity.
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Thermal insulation, compression and Air Permeability of polyester needle-punched nonwoven
2010Co-Authors: Sanjoy Debnath, M MadhusoothananAbstract:The normal round, circular hollow and trilobal cross-sectional shaped polyester fibres have been used to prepare needlepunched nonwoven fabrics for technical textile application. Effects of fabric weight and fibre cross-sectional shapes on thermal insulation value (TIV), fabric thickness, density, percentage compression, Air Permeability and sectional Air Permeability (SAP) have been studied. Comparison between Marsh and plate methods of TIV measurement has also been studied along with the inter-relation and grouping of parameters using correlation matrix and cluster analysis approach respectively. The TIV, thickness, density, Air Permeability and SAP fall under different sub-cluster but all these parameters are dependent on fabric weight. Plate method of TIV measurement is preferred over Marsh TIV measurement because of the easy preparation of samples and the reason that the samples retain their original properties and it gives more accurate results. Trilobal fabric sample shows highest TIV, thickness and percentage compression followed by regular and hollow polyester needle-punched fabrics. Thermal insulation value, thickness and density of the fabric increase but percentage compression, Air Permeability and SAP decrease with the increase in fabric weight. The fabric thickness is significantly correlated with fabric weight and TIV. Fabric weight versus Air Permeability and fabric density versus SAP are negatively correlated with significant correlation coefficient.
Jirí Militký - One of the best experts on this subject based on the ideXlab platform.
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Air Permeability of polyester nonwoven fabrics
Autex Research Journal, 2015Co-Authors: Guocheng Zhu, Dana Kremenáková, Yan Wang, Jirí MilitkýAbstract: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 experimental values with two models which are based on hydraulic radius theory and drag theory, respectively. The Air Permeability of the samples was measured by an Air Permeability tester FX3300. The results showed that the Air Permeability of non-woven fabrics decreased with the increase in thickness and density of samples, increased with the increase of porosity, and the Air Permeability was not directly proportional to the pressure gradient. Meanwhile, the prediction model based on hydraulic radius theory had a better agreement with experimental values than the model based on drag theory, but the values were much higher than the experimental results, especially for higher porosity and higher pressure gradient.
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Air Permeability and light transmission of weaves
International Journal of Clothing Science and Technology, 1999Co-Authors: Jirí Militký, Marie Travnickova, Vladimir BajzikAbstract:The main aim of this contribution is characterization of fabric porosity by the light transmission and comparison of this characteristic with Air Permeability and idealized geometrical structure of selected weaves. For characterization of Air Permeability the classical apparatus has been used. The transmission of light through fabrics has been measured on the system LUCIA for image analysis. The porosity of textiles has been evaluated from corresponding construction parameters and idealized models of fabric geometry. The dependencies between the above mentioned characteristics were formalized by using regression analysis.
M F Montemor - One of the best experts on this subject based on the ideXlab platform.
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assessing concrete carbonation resistance through Air Permeability measurements
Construction and Building Materials, 2015Co-Authors: R Neves, Sena B Da Fonseca, Fernando A Branco, J De Brito, A S Castela, M F MontemorAbstract:Abstract Performance-based design and specification of concrete for durability is the most efficient way to achieve the intended service life; its use has been increasing. However, to have a consistent approach, the durability related properties must be assessed onsite. This assessment can provide useful and realistic information to estimate the service life of newly built concrete structures. Thus, this work aims at evaluating the suitability of a non-destructive onsite test method to provide such information. A preliminary study, comprising tests on Air Permeability and carbonation resistance of several concrete mixes and an analysis of its results, was carried out. The analysis allowed proposing an analytical model, based on the calibration of a theoretical model, correlating Air Permeability with resistance to carbonation. This allows estimating reliably carbonation resistance through Air Permeability results. Although further research is needed, to provide more data, the results encourage the use of a simple test method that operates on a completely non-destructive basis. Thus, a contribution to a more consistent approach towards the achievement of durable concrete structures and of the associated positive environmental impacts is provided.
