scholarly journals Effects of sizing and yarn structural properties on the physical properties of combed and carded cotton ring yarns

2018 ◽  
Vol 69 (02) ◽  
pp. 81-86
Author(s):  
ÖZDEMİR HAKAN
Keyword(s):  
Physical Properties ◽  
Structural Properties ◽  
Breaking Strength ◽  
Structural Parameters ◽  
Elongation At Break ◽  
Frictional Properties ◽  
Yarn Count ◽  
Sizing Agents ◽  
Weaving Loom ◽  
Back Rest

Warp yarns, prepared as warp beam, are exposed to various forces at weaving loom. Warp yarns are bended on the back rest, subjected to friction from drop wires and healds. They are also exposed to friction and impact at reed and thereby abraded. Yarns are sized in order to increase their resistance to these effects. Sizing agents ensure that warp yarns can be weaved with sizing process. On the other hand, yarn count and yarn type (combed or carded yarn) are the significant yarn structural properties that determine and so affect the physical properties of yarn. The main reason and objective this study is to investigate the effects of yarn structural parameters (yarn count and yarn type) and sizing on the physical properties (breaking strength, elongation at break, hairiness, friction coefficient) of 100% cotton carded and combed ring yarns, sized with four different sizing agents, which were not studied in the references. It is observed that sizing process cause to decrease in the hairiness up to 99% and in friction coefficients of combed and carded yarns whereas to increase in the breaking strengths of combed and carded yarns. And also, the combed yarns had better tensile and frictional properties than carded yarns.

The effects of yarn and fabric structural parameters on surface friction of plain-woven fabrics

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kura Alemayehu Beyene ◽  
Soliyana Gebeyaw
Keyword(s):  
Surface Properties ◽  
Structural Parameters ◽  
Surface Friction ◽  
Woven Fabrics ◽  
Weft Yarn ◽  
Content Type ◽  
Frictional Behavior ◽  
Frictional Properties ◽  
Yarn Count ◽  
Fabric Surface

Purpose Friction is considered to be one property of cloth that has considerable importance in the fields of both technological and subjective assessment for surface properties of textile fabrics. The purpose of this study is to investigate the affective aspects of yarn and fabric structural parameters on the behavior of surface friction of plain woven fabrics. Design/methodology/approach In this study, nine varieties of half-bleached cotton plain-woven fabrics with three weft yarn count (tex) and three weft thread density (ppc) are produced and will be examined for their frictional characteristics. The surface frictional properties of plain-woven fabrics were measured by using Kawabata (KES-Fb4) testing instrument. The ANOVA analysis is used to determine how yarn (count) and fabric (density) structural parameters does influence the surface friction properties of the fabrics. Also, the interaction effects between the factors (count and density) on the response variable (surface friction) of plain-woven fabrics. Findings The findings of this study revealed that the effects of weft yarn count and pick-density have statistically significant on the frictional behavior of the fabric surface properties at a 95% confidence interval. Thus, weft yarn count has a positive correlation with both coefficient of friction (MIU) and mean deviation of coefficient of friction (MMD) on frictional behavior of the fabric surface properties. On the other hand, pick density has a negative correlation with both MIU and MMD on frictional behavior of the fabric surface properties. The weft count, pick density and their interactions (Count X Density) have multicollinearity in the experiment term because the variance inflation factor values were greater than one. Originality/value The findings of this study can be routinely used across the textile industries and laboratories to provide a fundamental understanding regarding the surface frictional properties of the woven fabric for different end applications concerning the yarn structural parameters and fabric structural parameters. And the relationship of count and density with surface friction of plain woven fabrics.

COLUMBIUM 15W-5Mo-1Zr

Alloy Digest ◽  
1969 ◽  
Vol 18 (12) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Structural Properties ◽  
Base Alloy ◽  
Heat Treating ◽  
Temperature Performance

Abstract Columbium 15W-5 Mo- 1Zr is a columbium-base alloy capable of retaining usuable structural properties up to 2500 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Cb-17. Producer or source: Fansteel Metallurgical Corporation.

FEDERATED No. 8

Alloy Digest ◽  
1956 ◽  
Vol 5 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Frictional Properties ◽  
Good Corrosion Resistance ◽  
High Speeds ◽  
Bearing Alloy

Abstract FEDERATED No. 8 is a lead-base bearing alloy recommended for moderate to high speeds and moderate loads. It has very good frictional properties, reasonably good corrosion resistance and low price. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fatigue. It also includes information on casting and joining. Filing Code: Pb-3. Producer or source: Federated Metals Corporation, ASARCO Inc..

Prediction of structural parameters and physical properties ofCsHSO3up to 60 GPa

1998 ◽  
Vol 57 (8) ◽  
pp. 4321-4326 ◽  
Author(s):  
C. Griewatsch ◽  
B. Winkler ◽  
V. Milman ◽  
C. J. Pickard
Keyword(s):  
Physical Properties ◽  
Structural Parameters

Cable and Wire Application: Adoption of Nanomagnesium Hydroxide Blended with LDPE/EVA for Mechanical and Physical Properties

2013 ◽  
Vol 701 ◽  
pp. 202-206
Author(s):  
Ahmad Aroziki Abdul Aziz ◽  
Sakinah Mohd Alauddin ◽  
Ruzitah Mohd Salleh ◽  
Mohammed Iqbal Shueb
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Melt Flow Index ◽  
Low Density Polyethylene ◽  
Flow Index ◽  
Low Density ◽  
Elongation At Break ◽  
Mechanical And Physical Properties ◽  
Poly Ethylene ◽  
Loading Amount

Effect of nanoMagnesium Hydroxide (MH) nloading amount to the mechanical and physical properties of Low Density Polyethylene (LDPE)/ Poly (ethylene-co vinyl acetate)(EVA) nanocomposite has been described and investigated in this paper. The tensile strength results show that increased amount of nanofiller will decrease and deteriorate the mechanical properties. The elongation at break decreased continuously with increasing loading of nanofiller. Generally, mechanical properties become poorer as loading amount increase. Melt Flow Index values for physical properties also provide same trend as mechanical properties results. Increase filler amount reduced MFI values whereby increased resistance to the flow.

scholarly journals Engineering Properties of Peeled and Unpeeled Multiplier Onion

2020 ◽  
Vol 8 (3) ◽  
pp. 232-238
Author(s):  
Dawn C.P. Ambrose
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Coefficient Of Friction ◽  
Angle Of Repose ◽  
Engineering Properties ◽  
True Density ◽  
Crushing Strength ◽  
Frictional Properties ◽  
Allium Cepa L ◽  
Multiplier Onion

Multiplier onion (Allium cepa L. var aggregatum. Don.) is mainly used for its unique flavour in seasoning dishes. The unpeeled onions are processed at farm level by means of primary processing and by secondary processing various products like paste, flakes, powder could be produced from peeled onions. For the design of processing and handling equipment knowledge of engineering properties is essential. The engineering properties of peeled and unpeeled multiplier onion were determined. The average values of the physical properties of unpeeled onion were recorded for bulk density and true density as 636.621 and 1526.825 kg/m3 respectively. Similarly for peeled onions, the bulk and true density were 627.03 and 1108.74 kg/m3 respectively. The moisture present in peeled and unpeeled onion was 77.66 % and 74.43% (w.b) respectively. The TSS of multiplier onion was found to be 20° Brix for both peeled and unpeeled samples. The colour values were also measured using colour flex meter for the peeled and unpeeled onions. The frictional properties including coefficient of friction, filling and emptying angle of repose were also measured. Mechanical properties were determined by using a texture analyser. The firmness was measured in terms of penetrating force and crushing strength which were recorded to be 8.59 N and 124.93 N respectively for peeled and 12.00 N and 138.35 N respectively for unpeeled onions.

Variation of Poisson’s ratio of fabrics woven with helical composite auxetic weft yarns in relation to fabric structural parameters

2019 ◽  
Vol 50 (2) ◽  
pp. 149-169
Author(s):  
Asal Lolaki ◽  
Mohsen Shanbeh
Keyword(s):  
Poisson’S Ratio ◽  
Structural Parameters ◽  
Processing Technique ◽  
Poisson's Ratio ◽  
Image Processing Technique ◽  
Weft Yarn ◽  
Warp Yarn ◽  
Dimensional Changes ◽  
Weft Direction ◽  
Yarn Count

Auxetic textiles are defined as textiles with negative Poisson’s ratio. These textiles possess unique properties that render them suitable for special applications. This work aims to investigate the effect of fabric structural parameters such as thread densities, weave design and warp yarn count. Thus, 30 fabric samples were woven at 3 weft and 2 warp densities, respectively. Two warp counts and three weave designs of plain, basket 3/3 and weft-backed satin 6 were used. The samples were uniaxially loaded in weft direction and dimensional changes at various strains levels were evaluated. The evaluation was carried out using the image processing technique based on MATLAB software. The weft yarns used were found to exhibit auxetic behavior at the whole spectrum of the strain level used. The least weft yarn Poisson’s ratio was found to be −0.9. It was established that in general the fabric samples exhibit auxetic effect within the stated range of strain. Additionally, it was concluded that while fabric thread densities together with warp count influence the minimum fabric Poisson's ratio, auxetic behavior of the samples is not dependent on weave design alone. Rather, it was illustrated that the combined effect of weave design in association with stated structural parameters on auxetic feature cannot be ignored.

scholarly journals Self-similar transport, spin polarization and thermoelectricity in complex silicene structures

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
R. Rodríguez-González ◽  
L. M. Gaggero-Sager ◽  
I. Rodríguez-Vargas
Keyword(s):  
Physical Properties ◽  
Spin Polarization ◽  
Structural Parameters ◽  
Transition Metal Dichalcogenides ◽  
Monolayer Graphene ◽  
Complex Geometries ◽  
2D Material ◽  
Metal Dichalcogenides ◽  
Self Similar ◽  
Mott Formula

Abstract 2D materials open the possibility to study Dirac electrons in complex self-similar geometries. The two-dimensional nature of materials like graphene, silicene, phosphorene and transition-metal dichalcogenides allow the nanostructuration of complex geometries through metallic electrodes, interacting substrates, strain, etc. So far, the only 2D material that presents physical properties that directly reflect the characteristics of the complex geometries is monolayer graphene. In the present work, we show that silicene nanostructured in complex fashion also displays self-similar characteristics in physical properties. In particular, we find self-similar patterns in the conductance, spin polarization and thermoelectricity of Cantor-like silicene structures. These complex structures are generated by modulating electrostatically the silicene local bandgap in Cantor-like fashion along the structure. The charge carriers are described quantum relativistically by means of a Dirac-like Hamiltonian. The transfer matrix method, the Landauer–Büttiker formalism and the Cutler–Mott formula are used to obtain the transmission, transport and thermoelectric properties. We numerically derive scaling rules that connect appropriately the self-similar conductance, spin polarization and Seebeck coefficient patterns. The scaling rules are related to the structural parameters that define the Cantor-like structure such as the generation and length of the system as well as the height of the potential barriers. As far as we know this is the first time that a 2D material beyond monolayer graphene shows self-similar quantum transport as well as that transport related properties like spin polarization and thermoelectricity manifest self-similarity.

scholarly journals Physical Properties and Consumer Evaluation of Cocoa Bean Shell-Functionalized Biscuits Adapted for Diabetic Consumers by the Replacement of Sucrose with Tagatose

Foods ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 814 ◽  
Author(s):  
Olga Rojo-Poveda ◽  
Letricia Barbosa-Pereira ◽  
David Orden ◽  
Caroline Stévigny ◽  
Giuseppe Zeppa ◽  
...  
Keyword(s):  
Physical Properties ◽  
Structural Properties ◽  
Water Retention ◽  
Consumer Acceptance ◽  
Cocoa Bean ◽  
Total Dietary Fiber ◽  
Consumer Evaluation ◽  
Lower Solubility ◽  
Interesting Possibility ◽  
Physicochemical And Structural Properties

The cocoa bean shell (CBS), a by-product of the cocoa industry, has been reported to be rich in fiber and polyphenols, which could contribute to reducing the metabolism of sugars and glucose adsorption. The production of CBS-based biscuits in which sucrose is replaced with tagatose (a low-glycemic sugar with prebiotic properties), benefiting diabetic consumers, is proposed. Six prototype biscuits were produced using sucrose, tagatose, and CBS powder at 0%, 10%, and 20% as a wheat flour replacement. Biscuits were studied in terms of fiber content, and those with 10% and 20% CBS showed to contain 5.66% and 8.70–8.71% of total dietary fiber, respectively. Moreover, the physicochemical and structural properties of the biscuits were studied to evaluate their differences due to the use of sucrose and tagatose combined with CBS. Significant effects mainly caused by the reducing nature and lower solubility of tagatose with respect to sugar, and the water retention capacities of CBS were observed. Finally, the biscuits were evaluated by performing a consumer acceptance evaluation, and their perceptible sensorial differences were studied by performing a Napping® sensory characterization. CBS-based biscuits represent an interesting possibility for cocoa by-product revalorization, although an optimized recipe is recommended, especially when employing tagatose.

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