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Continuous Models for Vibration: Advanced Models
Published in Haym Benaroya, Mark Nagurka, Seon Han, Mechanical Vibration, 2017
Haym Benaroya, Mark Nagurka, Seon Han
A web is defined as a thin continuous film of material, such as paper, plastic, polymer, textile, and even metal. The web is transported through a web handling machine under tension. The tensile force exerted on the web is needed to overcome web and roller inertias, bearing friction, bending hysteresis, and air drag (which can be a significant factor at high web speeds).
Constructions of Textile Fabrics
Published in Robert Mather, John Wilson, Solar Textiles, 2023
Wetlaid webs are produced by processes similar to those used for producing paper. The fibres are first dispersed in water and then collected on a continuous screen to form a uniform mesh. The water is then filtered off before the web is dried by heating.
Prediction of electrospun web maximum pore diameter reliability
Published in The Journal of The Textile Institute, 2022
Virginija Kleivaitė, Rimvydas Milašius
Material properties, such as the melting temperature and the glass transition temperature, as well as the structural characteristics of nanofiber webs such as fiber diameter distribution, pore size distribution and fiber orientation distribution, determine the physical and mechanical properties of the webs. The surface of electrospun fibers is important when considering the end-use applications. For example, the ability to introduce porous surface features of a known size is required if nanoparticles need to be deposited on the surface of the fiber, if the drug molecules are to be incorporated for controlled release, as tissue scaffolding materials, and for acting as a cradle for enzymes. Besides, filtration performance of nanofibers is strongly related to their pore structure parameters, i.e. percent open area (POA) and pore-opening size distribution (PSD). Hence, the control of the pore of electrospun webs is of prime importance for the nanofibers that are being produced for these purposes. There is no literature available about the pore size and its distribution in an electrospun web. In this work, the maximum pore size of each SEM immage was measured by using an image analysis technique and its distribution was analyzed (Hsu et al., 2015; Mohammad Khanlou et al., 2015; Mukhopadhyay & Bandyopadhyay, 1964; Wang et al., 2015; Xue et al., 2014; Ziabari et al., 2008).