scholarly journals Geometrical Properties of Upholstery Fabrics used in Cars

2020 ◽  
Vol 6 (10) ◽  
pp. 56-59
Author(s):  
M.Mahmuda Begum and Dr.Shabiya Thaseen
Keyword(s):  
Polyester Fabric ◽  
Cotton Fabrics ◽  
Geometrical Properties ◽  
Fabric Thickness ◽  
Fabric Weight

The main purpose of this research is to study about the geometrical properties of upholstery fabrics used in cars such as cotton and polyester. These fabrics such as cotton and polyester where assessed by its fabric count both warp and weft directions, fabric thickness and fabric weight. From the analysis of the result, it can be concluded that Cotton fabrics had better strength than other selected polyester fabric.

scholarly journals Effect of Lycra Weight Percent and Loop Length on Thermo-physiological Properties of Elastic Single Jersey Knitted Fabric

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Amany Khalil ◽  
Pavla Těšinová ◽  
Abdelhamid R.R. Aboalasaad
Keyword(s):  
Thermal Conductivity ◽  
Water Vapor ◽  
Weight Percent ◽  
Vapor Permeability ◽  
Knitted Fabric ◽  
Loop Length ◽  
Geometrical Properties ◽  
Fabric Thickness ◽  
Yarn Diameter ◽  
Single Jersey

Abstract The aim of this work is to estimate the effect of loop length and Lycra weight percent (Lwp) on the geometrical and thermo-physiological comfort of elastic plain knitted fabric. Fifty single jersey knitted fabric samples were produced at five levels of Lycra weight percent (Lwp) (4%, 5%, 6%, 7%, and 8%) and loop length (2.7 mm, 2.9 mm, 3.1 mm, 3.3 mm, and 3.4 mm) with full plaited (fp) and half plaited (hp) of bare Lycra. The thermo-physiological comfort properties (thermal conductivity, absorptivity, and water vapor permeability), air permeability, and geometrical properties were measured at standard of each one. The results showed that the elastic single jersey knitted fabric thickness ranged between 3.12 times and 4.2 times of the yarn diameter (d). The fabric thickness increased when loop length is increased and decreased when Lwp is increased. The thermal conductivity, absorptivity, and water vapor resistance (WVR) decreased with Lwp increasing.

scholarly journals Compression Properties of Polyester Needlepunched Fabric

2009 ◽  
Vol 4 (4) ◽  
pp. 155892500900400 ◽  
Author(s):  
Sanjoy Debnath ◽  
M. Madhusoothanan
Keyword(s):  
Cross Section ◽  
Polyester Fabric ◽  
Initial Thickness ◽  
Cross Sectional ◽  
Nonwoven Fabrics ◽  
Thickness Loss ◽  
Compression Properties ◽  
Reinforcing Material ◽  
Fabric Sample ◽  
Fabric Weight

In the present paper, a study of the effects of fabric weight, fiber cross-sectional shapes (round, hollow and trilobal) and presence of reinforcing material on the compression properties (initial thickness, percentage compression, percentage thickness loss and percentage compression resilience) of polyester needle punched industrial nonwoven fabrics is presented. It was found that for fabrics with no reinforcing material, the initial thickness, compression, and thickness loss were higher than fabrics with reinforcing material, irrespective offiber cross-section. Compression resilience data showed the reverse trend. Initial thickness for trilobal cross-sectional fabric sample was highest followed by round and hollow cross-sectioned polyester needle punched fabrics. The polyester fabric made from hollow cross-sectioned fibers showed the least percentage compression at every level of fabric weights. The trilobal cross-sectioned polyester fabric sample showed higher thickness loss followed by round and hollow cross-sectioned polyester fabric samples respectively. The hollow cross-sectioned polyester fabric samples showed maximum compression resilience followed by round and trilobal cross-sectioned polyester samples irrespective of fabric weights. The initial thickness increases, but percentage compression, thickness loss and compression resilience decreases with the increase in fabric weight irrespective of fiber cross-sectional shapes.

scholarly journals Validity of Washburn’s equation in sericin treated polyester fabric

2019 ◽  
Vol 70 (01) ◽  
pp. 94-97
Author(s):  
KAMALRAJ DASARATHAN ◽  
SUBRAMANIAM VENKATRAMAN
Keyword(s):  
Caustic Soda ◽  
Detailed Analysis ◽  
Reactive Dyes ◽  
Antimicrobial Effect ◽  
Polyester Fabric ◽  
Cotton Fabrics ◽  
Polyester Fabrics ◽  
Work Done ◽  
Kinetics Of

Application of sericin to polyester and cotton fabrics will bring about a number of advantages in that the materials become hydrophilic and are capable of imparting antimicrobial effect. Also, the materials can be dyed using reactive dyes. A considerable amount of work has been carried out on the application of sericin to polyester and cotton fabrics. Wickability of treated fabrics has been studied and it was demonstrated that there was an improvement. A detailed analysis of study is warranted on wickability as the work done on it was scant. It is necessary to validate Washburn’s equation which constitutes an important component of kinetics of wicking in this paper. The validity of Washburn’s equation for a set of data on wickability of sericin treated polyester fabrics is studied. Untreated polyester fabric and treated with caustic soda and plasma followed by sericin treatment using DMDHEU and Glutaraldehyde were taken for wicking studies. Two models were used. From the slopes it is found that Washburn’s equation is followed.

scholarly journals Investigation of the effect of cotton knitted fabric structure of babywear on moisture management properties

2019 ◽  
Vol 70 (06) ◽  
pp. 495-501
Author(s):  
SERAP BILTEKIN ◽  
AYÇA AYÇA
Keyword(s):  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Liquid Transport ◽  
Fabric Thickness ◽  
Moisture Management ◽  
Management Capability ◽  
Yarn Thickness ◽  
Cotton Knitted Fabric ◽  
Fabric Weight ◽  
Fabric Structures

In recent years, baby clothing has become an important role in the garment sector. The increasing importance of baby clothing, along with the new designs, different fabric structures, accessories and clothing comfort is required to develop. Due to the increasing importance given to baby health in the world, babywears have to be manufactured from materials that are not harmful to health in accordance with the standards. The purpose of this study is to investigate the effect of cotton knitted fabrics structure of babywear on moisture management properties. For this reason, moisture management properties (wetting time, absorption rate, spreading speed, accumulative one-way transport capability (OWTC) and overall moisture management capability (OMMC)) of cotton knitted fabrics of different structures which are widely used in babywear have been examined. Moisture management tester was used for liquid transport of the knitted fabric samples. As a result of the study, it is observed that single jersey fabric had higher OMMC values than these of interlock and 1x1 rib knitted fabrics. Regarding the effect of yarn thickness, liquid transport increased with decreasing yarn thickness in general. Regarding the effect of fabric weight and fabric thickness, liquid transport decreased with increasing weight and thickness in general. Negative correlations were observed between fabric weight, fabric thickness and overall moisture management capability.

Compression creep behaviour of jute-polypropylene blended needle-punched nonwoven

2012 ◽  
Vol 82 (20) ◽  
pp. 2116-2127 ◽  
Author(s):  
Sanjoy Debnath ◽  
Manicavasagom Madhusoothanan
Keyword(s):  
Process Parameters ◽  
Creep Behaviour ◽  
Polypropylene Fibre ◽  
Initial Thickness ◽  
Box Behnken Design ◽  
Fabric Thickness ◽  
Compression Creep ◽  
The Individual ◽  
Fabric Weight ◽  
Blend Proportion

This paper discusses the compression creep behaviour of jute-polypropylene blended needle-punched nonwoven. It is essential to know the compression creep behaviour of the needle-punched fabrics too, because of their various applications like geotextiles and carpets. Needle-punched fabric samples were prepared based on the three factors, three levels Box Behnken design of experiment to study the individual as well as interaction effects of process parameters of fabric weight, needling density and blend proportion of jute and polypropylene fibre blend on fabric thickness and compression creep. This study reveals that the initial thickness of fabric decreases prominently with the increase in needling density at low fabric weight and has hardly any effect at high fabric weight (450 g/m2). However, around 43% increase in fabric thickness occurs at high jute content level (60%). At low fabric weight, the effect of the needling density on compression creep is highly prominent when polypropylene content is more than 50% in the blend. However, its effect is negligible when jute content is higher than 50% in the blend. The creep initially decreases with the increase in fabric weight up to a certain limit and thereafter it increases. The minimum value of compression creep of around 14% is obtained at 375 g/m2 fabric weight with 150 punches/cm2 needling density at the level of 60% jute content.

Comparison of Cross-sectional Geometrical Properties and Bone Density between Saint-Bernard and other Giant Breed Dogs

2019 ◽  
Author(s):  
S. Mejia ◽  
A. Iodence ◽  
L. Griffin ◽  
S.J. Withrow ◽  
M. Salman ◽  
...  
Keyword(s):  
Bone Density ◽  
Cross Sectional ◽  
Geometrical Properties ◽  
Saint Bernard

Methodology of Calculation the Terminal Settling Velocity Distribution of Irregular Particles for High Values of the Reynold’s Number/Metodologia Wyliczania Rozkładu Granicznej Prędkości Opadania Ziaren Nieregularnych Dla Wysokich Wartości Liczb Reynoldsa

2014 ◽  
Vol 59 (2) ◽  
pp. 553-562 ◽  
Author(s):  
Agnieszka Surowiak ◽  
Marian Brożek
Keyword(s):  
Velocity Distribution ◽  
Settling Velocity ◽  
Random Variables ◽  
Independent Random Variables ◽  
Calculation Algorithm ◽  
Shape Coefficient ◽  
Geometrical Properties ◽  
Size And Shape ◽  
Physical Density ◽  
Settling Velocity Distribution

Abstract Settling velocity of particles, which is the main parameter of jig separation, is affected by physical (density) and the geometrical properties (size and shape) of particles. The authors worked out a calculation algorithm of particles settling velocity distribution for irregular particles assuming that the density of particles, their size and shape constitute independent random variables of fixed distributions. Applying theorems of probability, concerning distributions function of random variables, the authors present general formula of probability density function of settling velocity irregular particles for the turbulent motion. The distributions of settling velocity of irregular particles were calculated utilizing industrial sample. The measurements were executed and the histograms of distributions of volume and dynamic shape coefficient, were drawn. The separation accuracy was measured by the change of process imperfection of irregular particles in relation to spherical ones, resulting from the distribution of particles settling velocity.

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