Browsing by Author "Yang Tao"

Now showing 1 - 20 of 61
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    2015 Annual Report of L&L Acoustic Project
    (2015) Militký Jiří; Zhu Guocheng; Yang Tao
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    A new approach to apply silica aerogel into nonwovens for thermal insulation
    (Technical University of Liberec, 2017) Xiong Xiaoman; Yang Tao; Mishra Rajesh; Wiener Jakub
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    A review of acoustic properties measurements and wave propagation models of porous materials
    (OPS, 2015) Novák Jan; Militký Jiří; Mishra Rajesh; Sanetrník Filip; Yang Tao; Xiong Xiaoman
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    A Review on Nanofibrous Membranes and Their Applications
    (OPS, 2016) Xiong Xiaoman; Yang Tao; Huang Juan; Mishra Rajesh; Militký Jiří
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    A study of some airflow resistivity models for multi-component polyester fiber assembly
    (8206Elsevier, 2018) Yang Tao; Mishra Rajesh; Horoshenkov Kirill V.; Hurrell Alistair; Saati Ferina; Xiong Xiaoman
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    Acoustic evaluation of Struto nonwovens and their relationship with thermal properties
    (Sage, 2018) Yang Tao; Xiong Xiaoman; Mishra Rajesh; Militký Jiří; Novák Jan
    This paper presents an experimental investigation on the sound absorption behavior and thermal properties of Strutononwovens by establishing relationship between these properties. Seven Struto nonwoven fabrics were selected toexamine the noise reduction coefficient (NRC) and average values of sound absorption coefficients as well as thermalproperties, including thermal conductivity and thermal resistance. The Bruel and Kjar impedance tube instrument andAlambeta were used for the evaluation of acoustic and thermal properties, respectively. The influence of structuralparameters on acoustic and thermal properties of Struto nonwovens were investigated and analyzed. The results showedthat Struto nonwovens with higher thickness, finer fibers and higher fabric grams per square meter can provide bettersound absorption performance. The effect of specific airflow resistance on sound absorption performance was alsoinvestigated. It is observed that sound absorption performance has a strong correlation with specific airflow resistance.The effect of porosity on specific airflow resistance and thermal properties was studied in detail. The result indicated thatporosity has a strong correlation with specific airflow resistance and thermal properties. It was also observed that soundabsorption, the NRC and have an insignificant correlation with thermal conductivity, while they are strongly correlatedwith thermal resistance. The correlation coefficient of the NRC with thermal resistance is 0.9835, indicating that theNRC is directly proportional to the thermal resistance of Struto nonwovens.
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    ACOUSTIC PROPERTIES OF ADVANCED NONWOVENS
    (Technical University of Liberec, 2019) Mishra Rajesh; Militký Jiří; Yang Tao; Xiong Xiaoman
    Sound absorption property of perpendicularly-laid nonwovens were tested by Brüel and Kjær measuring instrument. The effect of manufacturing techniques on sound absorption performance was investigated. The effect of porosity and airflow resistivity on sound absorption ability was studied. It is found that there is no significant influence of two manufacturing techniques on sound absorption performance. The increase of areal density results in improvement of sound absorption ability. The increase of thickness can improve sound absorption coefficient at low-frequency range, but decrease of the coefficient occurred at high-frequency range. A quadratic relationship between porosity and sound absorption ability has been found. The airflow resistivity is a key parameter to predict accurately the acoustical properties of fibrous media. There is a large number of theoretical and empirical models which can be used to predict the airflow resistivity of this type of porous media. However, there is a lack of experimental data on the accuracy of these models in the case of multi-component fibrous media. This study presents a detailed analysis of the accuracy of several existing models to predict airflow resistivity which make use of the porosity, bulk density and mean fiber diameter information. The AFD300 AcoustiFlow device was employed to measure airflow resistivity. It is shown that some existing models largely under- or overestimate the airflow resistivity when compared with the measured values. A novel feature of this work is that it studies the relative performance of airflow resistivity prediction models that are based on the capillary channel theory and drag force theory. These two groups of models are then compared to some purely empirical models. It is found that the mean absolute values of relative error (MAVRE) by some models is unacceptably high (e.g. >20-30%). The results suggest that there are existing models which can predict the airflow resistivity of multi-component fibrous media with 12.8% accuracy. A simple empirical model based on fiber diameter and fabric bulk density has been obtained through power-type model. This model exhibits very small error which is 5.1%.
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    Advanced Fibrous Materials for Acoustic Performance
    (Technická univerzita v Liberci, 2019) Yang Tao; Xiong Xiaoman; Mishra Rajesh; Petrů Michal; Novák Jan; Militký Jiří
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    Aerogel Embedded High-performance Fibrous Materials
    (Technická univerzita v Liberci, 2019) Xiong Xiaoman; Yang Tao; Mishra Rajesh; Venkataraman Mohanapriya; Militký Jiří; Petrů Michal
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    Application of Acoustical Method to Characterize Nonwoven Material
    (Korean Fiber Society, 2021) Yang Tao; Xiong Xiaoman; Wang Yuanfeng; Mishra Rajesh; Petrů Michal; Militký Jiří
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    Characterization on Polyester Fibrous Panels and Their Homogeneity Assessment
    (MDPI, 2020) Yang Tao; Petrů Michal; Xiong Xiaoman; Militký Jiří
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    Comparative Analysis on Acoustic Properties of Different Struto-type Nonwovens
    (OPS, 2016) Yang Tao; Xiong Xiaoman; Mishra Rajesh; Novák Jan; Militký Jiří
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    Copper coated textiles for inhibition of virus spread
    (TBIS, 2020) Hu Shi; Wang Dan; Yang Kai; Wang Yuanfeng; Yang Tao; Peng Qingyan; Tan Xiaodong; Křemenáková Dana; Militký Jiří; Venkataraman Mohanapriya; Periyasamy Aravin Prince
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    Dendrimer-grafted PLGA nanofibrous matrix-mediated gene delivery systems
    (TBIS, 2020) Peng Qingyan; Xiao Shi-Li; Tan Xiaodong; Yang Kai; Wang Yuanfeng; Yang Tao; Wang Dan; Hu Shi; Xiong Xiaoman; Venkataraman Mohanapriya; Militký Jiří
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    Determination of the permeability coefficient and airflow resistivity of nonwoven materials
    (Sage Publications, 2021) Yang Tao; Petrů Michal; Wang Xiaomeng; Xiong Xiaoman; Militký Jiří
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    Development And Characterization of 3d Orthogonal Carbon Fibre Reinforced Composite
    (TEXTILE BIOENGINEERING & INFORMATICS SOCIETY, 2015) Yang Tao; Xiong Xiaoman; Mishra Rajesh; Militký Jiří
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    Disinfection mechanisms of UV light and ozonization
    (TBIS, 2020) Wang Yuanfeng; Militký Jiří; Periyasamy Aravin Prince; Venkataraman Mohanapriya; Baheti Vijay; Yang Kai; Hu Shi; Wang Dan; Tan Xiaodong; Yang Tao; Peng Qingyan
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    Effect of Weaving Friction on the Hairiness and Mechanical Properties of Cotton Warp
    (TEXTILE BIOENGINEERING & INFORMATICS SOCIETY LTD, 2015) Xiong Xiaoman; Yang Tao; Mishra Rajesh; Militký Jiří