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Showing 1 to 20 of 49 for “"nonwoven"”.
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Mechanical behavior of nonwoven felts
… entalla descritos en los apartados anteriores. Nonwoven felts are materials manufactured from a set of disordered fibers consolidated by bonds of different nature depending on the particular material or processing technique. The industrial applications of these materials have grown very rapidly …
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Mechanics of bending nonwoven fabrics.
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1979.
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Fabrication and Evaluation of Specialty Nonwoven Materials
… absorption and insulation using natural fiber nonwovens via carbonization and activation. Evaluation of these textile materials includes tensile strength, thermogravimetric analysis, sound absorption and transmission loss, scanning electronic microscopy and surface properties. Carbonization of …
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A continuum model for needlepunched nonwoven fabrics
Nonwoven fabrics are sheet structures created by bonding or interlocking a web (network) of fibers through mechanical, thermal or chemical processes. In general, the mechanical response of nonwoven fabrics exhibits two major characteristics. First, the mechanical response can vary significantly …
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Multiscale modeling and analysis of nanofibers and nonwoven materials
… down to the range of a few nanometers. The nonwoven structure has unique features, including interconnected pores and a very large surface to volume ratio, which enable such nonwoven materials to have many applications. The properties of the fibers and nonwoven fabrics produced, as well as …
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Biaxial Response of Individual Bonds in Thermomechanically Bonded Nonwoven Fabrics
Thermomechanically bonded spunbond nonwoven fabrics contain discrete bonds that are formed by melted and fused fibers. Through equi-biaxial tensile testing and simultaneous image capture, the mechanical response of individual bonds was studied through loading in the preferential fiber direction, …
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Mechanics and Fracture Behavior of Thermomechanical Bonds in Nonwoven Fabric
The market for nonwoven fabrics has experienced extreme growth in recent years and is expected to double in size from 2010 to 2020. This remarkable growth can be attributed to its numerous applications, ease of manufacturing, and customizable properties such as fabric stiffness, extensibility, and …
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Morphology and mechanical properties of electrospun polymeric fibers and their nonwoven fabrics
Electrospinning is a straight forward method to produce fibers with diameter on the order of a few tens of nanometers to the size approaching commercial fibers (on the order of 10 prm or larger). Recently, the length scale effect on physical properties has attracted great attention because of the …
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The effects of abrasion on liquid-fabric interaction of selected nonwoven fabrics
… on the liquid-fabric interaction of selected nonwoven barrier fabrics. The abrasion treatments included moderate and severe abrasion, flat and flat/flex abrasion, and dry and wet abrasion. The liquid-fabric interactions included wetting/wicking, retention, and penetration through nonwoven …
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Liquid transport mechanisms in cotton-polypropylene laminated nonwoven fabrics influencing pesticide penetration
… the liquid transport properties of cotton nonwoven laminates of varying cotton/polypropylene fiber content (80:20, 60:40, 40:60, by weight) with a 100% polypropylene fabric and a 100% polyethylene fabric. Capillary, pressure and impact penetration mechanisms were investigated as well as …
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Physical and mechanical properties of cotton waste nonwoven web produced by needle punching method
A nonwoven web refers to web structures that have been bonded together by entangling the fibres via mechanical, chemical or thermal bonding. Cotton waste has turned into a major threat to both environment and textile manufacturing due to the ever increasing world growth and population. Hence, the …
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Investigation of deformation and failure mechanisms in woven and nonwoven fabrics under quasi-static loading conditions
… of high performance ballistic woven and nonwoven fabrics under in- plane quasi-static loading conditions have been investigated. The investigations focused on the responses of fabrics at the mesostructural level as well as at the macroscopic level under uniaxial tensile and in-plane shear …
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Use of physiological and perceptual dimensions of clothing comfort to evaluate nonwoven protective fabrics through wear testing of limited-use coveralls
The purpose of this research was to identify nonwoven protective fabrics designed to have improved comfort properties over a fabric currently used in limited-use chemical protective clothing by using physiological and perceptual dimensions of comfort. Fabrics that are both waterproof and breathable …
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HYDRAULIC COMPATIBILITY OF GEOTEXTILES FILTERING RECYCLED MATERIALS
… the hydraulic compatibility of several woven and nonwoven geotextiles with four recycled materials commonly used in construction (recycled concrete aggregate, recycled asphalt pavement, foundry sand and recycled asphalt shingle). Upon completion of the LTF tests, grain size analyses, permittivity …
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Bending properties of a lightweight suiting fabric as affected by a fusible and a nonfusible interfacing
… to determine the effect fusible and nonfusible nonwoven interfacings have on three bending properties of a lightweight suiting fabric. These three properties are flexural rigidity, crease recovery, and seam head size. A lightweight suiting fabric, a nonwoven fusible interfacing, and a nonwoven …
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Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers
… forces are also responsible for the adhesion in nonwoven carbon nanofiber networks. Experimental and modeling results are presented for the mechanical and electrical properties of nonwoven (random entanglements) of carbon nanofibers under relatively low and high-loads, both in tensions and …
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Deformation prediction of geosynthetic reinforced soil retaining walls
… retaining walls.Two sands, two polypropylene nonwoven needle-punched geotextiles, three polypropylene woven slit-film geotextiles, and a multi-filament polyester woven geotextile were the focus of the testing program. In-soil testing of the geotextiles was performed using a plane strain unit …
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Low Stress Mechanical Properties of Hydroentangled Fabrics
Nonwoven fabrics are used in many different applications including wipes, incontinence products, interlinings, blinds, bed linen, protective clothing and others. However, the potential uses of nonwovens in traditional clothing outerwear (e. g. shirtings) are still limited. The low stress mechanical …
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Development and Use of Moisture-Suction Relationships for Geosynthetic Clay Liners
… program consisted of configurations of woven and nonwoven geotextiles reinforced with needlepunched fibers. A geofilm was adhesively bonded to the nonwoven side of one of the GCL products. The hydration solution tests involved hydrating GCLs with deionized water, tap water, 0.1 M CaCl<sub>2</sub>, …
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Supramolecular Nanofibers - Preparation, Structure-Property Relations, and Applications
… is the standard technique to post-modify nonwoven filters with conventional polymer nanofibers on the filter surface. However, this process is limited to the surface of the scaffold. In this thesis, the principle utilization of supramolecular nanofibers in air filtration is demonstrated …
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