Simulating Anisotropic Woven Fabric Deformation with a New Particle Model

Technical textiles used in airbag are usually in tight structure and subject to high air pressure in through-thickness direction. The pressure can deform fabric with changing its properties such as porosity and air permeability. This paper proposes an analytical approach to predict the out-of-plane deformation of tight fabric by analogy with membrane deformation. The model integrates the energies happened on the deformed fabric, that is, fabric strain energy, bending energy, and external work done. The fabric deformation can be predicted by minimizing the total fabric energy. The prediction was validated by experiment for fabric profile and the maximum displacement, and a good agreement was found for the cases of two typical fabrics. A sensitivity study shows that Young's modulus and Poisson's ratio can affect the fabric deformation significantly.

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Experimental and theoretical analysis of air-inflated circular woven fabric deformation

Journal of the Textile Institute ◽

10.1080/00405000.2018.1551303 ◽

2018 ◽

Vol 110 (8) ◽

pp. 1169-1178

Author(s):

Donya Najafzadeh ◽

Saeed Shaikhzadeh Najar ◽

Mohammad Reza Khedmati

Keyword(s):

Theoretical Analysis ◽

Woven Fabric ◽

Fabric Deformation

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Influence of Tensile Stress on Woven Compression Bandage Structure and Porosity

Autex Research Journal ◽

10.2478/aut-2019-0027 ◽

2020 ◽

Vol 20 (3) ◽

pp. 263-273 ◽

Cited By ~ 1

Author(s):

Abdelhamid R.R. Aboalasaad ◽

Brigita Kolčavová Sirková ◽

Zuhaib Ahmad

Keyword(s):

Tensile Stress ◽

Woven Fabric ◽

Compression Bandage ◽

Body Parts ◽

Finishing Process ◽

Applied Tension ◽

Fabric Deformation ◽

Main Factors ◽

The Given ◽

The Relationship

AbstractWoven compression bandage (CB) is one of the elastic textiles that exert pressure on muscles. With a defined tensile strength, it is possible to create the required compression on the given body parts. This work aims to investigate the relationship between woven fabric deformation, porosity, and tensile stress properties of three main types of woven CBs. All bandage samples are applied on human leg using two- and three-layer bandaging techniques. Bandage porosity is calculated for all frames at different weave angles using NIS software. Woven bandage construction parameters which are given by the preparation of warp and weft yarns, twist, count, and density along with woven fabric weave, type of weaving, and finishing process are the main factors that influence the bandage properties. Several methods considering thread distributions have been developed to determine the woven fabric's porosity during the tensile stress. Experimental results confirm that bandage porosity is directly proportional to the bandage extension and weave angle that ranges from 44° to 90°. The novelty of candidate study is to introduce practical remarks to the patient for optimizing the required bandage pressure by suitable extension or applied tension or weave angle for two- and three-layer bandaging systems.

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Modeling fine particles and alkali metal compound behavior in a kraft recovery boiler

TAPPI Journal ◽

10.32964/tj11.7.9 ◽

2012 ◽

Vol 11 (7) ◽

pp. 9-14 ◽

Cited By ~ 2

Author(s):

AINO LEPPÄNEN ◽

ERKKI VÄLIMÄKI ◽

ANTTI OKSANEN

Keyword(s):

Alkali Metal ◽

Computational Models ◽

Fine Particles ◽

Black Liquor ◽

Melting Behavior ◽

Metal Compound ◽

Effect Of Temperature ◽

Particle Model ◽

Boiler Furnace ◽

Recovery Boiler

Under certain conditions, ash in black liquor forms a locally corrosive environment in a kraft recovery boiler. The ash also might cause efficiency losses and even boiler shutdown because of plugging of the flue gas passages. The most troublesome compounds in a fuel such as black liquor are potassium and chlorine because they change the melting behavior of the ash. Fouling and corrosion of the kraft recovery boiler have been researched extensively, but few computational models have been developed to deal with the subject. This report describes a computational fluid dynamics-based method for modeling the reactions between alkali metal compounds and for the formation of fine fume particles in a kraft recovery boiler furnace. The modeling method is developed from ANSYS/FLUENT software and its Fine Particle Model extension. We used the method to examine gaseous alkali metal compound and fine fume particle distributions in a kraft recovery boiler furnace. The effect of temperature and the boiler design on these variables, for example, can be predicted with the model. We also present some preliminary results obtained with the model. When the model is developed further, it can be extended to the superheater area of the kraft recovery boiler. This will give new insight into the variables that increase or decrease fouling and corrosion

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Mikania micrantha mixed woven fabric for quick blood clotting and wound healing

Journal of Textile Engineering & Fashion Technology ◽

10.15406/jteft.2020.06.00252 ◽

2020 ◽

Vol 6 (5) ◽

Author(s):

Shaikh Md Mominul Alam ◽

Shilpi Akter ◽

Md Lutfor Rahman

Keyword(s):

Wound Healing ◽

Blood Clotting ◽

Woven Fabric ◽

Excessive Bleeding ◽

Sustainable Operations ◽

Environment Friendly ◽

Mikania Micrantha ◽

Leaf Powder ◽

Medical Textile ◽

Dressing Materials

The aim of this paper is to introduce novel dressing with Mikania Micrantha for quick blood clotting and wound healing. When epidermis of human skin is cut or scrapped, sometimes too much bleeding occurs. Excessive bleeding may cause death, if bleeding is not stopped immediately. To promote blood clotting & wound healing natural based bio materials are still insufficient in medical textile sector. To fill up this scarcity, woven fabric treated with Mikania micrantha leaf juice & leaf powder was examined. M. micrantha exhibits good blood clotting time in comparison with available dressing materials. Woven fabric (bandage) that contains M. micrantha can be used for cut wounds healing purpose. The experiments were carried out in environment friendly way which indicates the production & processing of these dressing materials can have enormous contribution to sustainable operations and products.

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