Influence of Mechanical Properties of Lightweight Silk Fabrics on Seam Shrinkage

2011 ◽  
Vol 331 ◽  
pp. 119-122
Author(s):  
Qiao Ying Wu ◽  
Wen Bin Zhang
Keyword(s):  
Mechanical Properties ◽  
Shrinkage Rate ◽  
Regression Equations ◽  
Light Weight ◽  
Silk Fabric ◽  
Bending Rigidity ◽  
Silk Fabrics ◽  
Main Factor

The purpose of this article is to study the effects of mechanical properties on seam shrinkage of lightweight silk fabrics. Thirty five silk fabrics are used for experiment. Mechanical properties of the fabrics on warp and weft directions were tested by FAST instrument. Seam shrinkage rate were tested. Curve regressions were used to analyze the influence of mechanical properties on seam shrinkage. The results showed that the bending rigidity and extensibility were closely correlated with the seam shrinkage rate, while the formability and rigidity were not the main factor of affecting the seam shrinkage of the light-weight silk fabric. The regression equations of bending rigidity and seam shrinkage rate, extensibility and seam shrinkage rate were obtained.

scholarly journals Optimization of Squeeze Parameters and Modification of AlSi7Mg Alloy

2013 ◽  
Vol 13 (2) ◽  
pp. 113-116 ◽  
Author(s):  
A. Zyska ◽  
Z. Konopka ◽  
M. Łągiewka ◽  
M. Nadolski
Keyword(s):  
Mechanical Properties ◽  
Factorial Design ◽  
Squeeze Casting ◽  
Strength Increase ◽  
Regression Equations ◽  
Mould Temperature ◽  
Squeeze Pressure ◽  
Casting Technology ◽  
Modification Treatment ◽  
Main Factor

Abstract The paper present the examination results concerning mechanical properties of castings made of AlSi7MG alloy in correlation both with the most significant squeeze casting parameters and with the modification treatment. Experiments were planned and held according to the 23 factorial design. The regression equations describing the influence of the squeeze pressure, the mould temperature, and the quantity of strontium modifier on the strength and elongation of the examined alloy were obtained. It was found that the main factor controlling the strength increase is the squeeze pressure, while the plasticity (A5) of the alloy is affected most advantageously by modification. The application of modification treatment in squeeze casting technology enables for production of the slab-type castings made of AlSi7Mg alloy exhibiting strength at the level of 230 MPa and elongation exceeding 14%.

Wrinkle-Resistance Property of Tussah Silk Fabric Modified with Butane Tetracarboxylic Acid

2014 ◽  
Vol 685 ◽  
pp. 76-79
Author(s):  
Zhi Mei Liu ◽  
Jie Lin ◽  
De Hong Cheng ◽  
Yan Hua Lu
Keyword(s):  
Mechanical Properties ◽  
Breaking Strength ◽  
Retention Rate ◽  
Silk Fabric ◽  
Tetracarboxylic Acid ◽  
Wrinkle Resistance ◽  
Resistance Property ◽  
Bright Future ◽  
Treatment Conditions ◽  
Silk Fabrics

In this paper, 1,2,3,4-butane tetracarboxylic acid (BTCA) were applied to modified tussah silk fabric to obtain good wrinkle resistant property. Tussah silk fabric was treated with a pad-dry-cure method with a liquor of 90% pick up. The wrinkle recovery property, whiteness and mechanical properties of the tussah silk fabric were measured and analysized. The finishing agents BTCA in the presence of catalyst of sodium monophosphate (SHP) as well as the treatment conditions significantly affected the anti-wrinkle effects of treated tussah silk fabrics. All the treated fabric samples showed increased wrinkle resistant property, retention rate of breaking strength and whiteness. The results indicated that BTCA has a bright future in treatmet of silk anti-wrinkle modification.

Textile Properties of Tussah Silk Fabric by Eco-Friendly Crosslinking Agents Modification

2014 ◽  
Vol 685 ◽  
pp. 68-71
Author(s):  
Zhi Mei Liu ◽  
Gang Li ◽  
De Hong Cheng ◽  
Yan Hua Lu
Keyword(s):  
Mechanical Properties ◽  
Citric Acid ◽  
Breaking Strength ◽  
Retention Rate ◽  
Silk Fabric ◽  
Treatment Conditions ◽  
Finishing Process ◽  
Silk Fabrics ◽  
Recovery Angle ◽  
Crosslinking Agents

To increase the wrinkle resistant property of tussah silk fabric, the eco-friendly crosslinking agents of citric acid (CA) was applied to tussah silk wrinkle resistant finishing process. Tussah silk fabric was treated with a conventional pad-dry-cure method. The finishing effects of tussah silk fabric including wrinkle recovery angle, whiteness and mechanical properties were characterized. The finishing agents CA in the presence of catalyst of sodium monophosphate (SHP) as well as the treatment conditions significantly affected the anti-wrinkle effects of treated tussah silk fabrics. The treated fabric samples showed increased wrinkle resistant property. The retention rate of breaking strength and whiteness of CA treatment tussah silk meet to the demands of the fabric treatment.

scholarly journals Comparison of silk fabric dynamic drapability and correlation analysisof impact factors

2020 ◽  
Vol 71 (01) ◽  
pp. 55-61
Author(s):  
XINRONG HU ◽  
TAO PENG ◽  
JUNPING LIU ◽  
GANG LI ◽  
SHUQIN CUI ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Correlation Analysis ◽  
Impact Factor ◽  
Structural Characteristics ◽  
Experimental Result ◽  
Impact Factors ◽  
Silk Fabric ◽  
Silk Fabrics ◽  
The Impact

Drapability is the unique performance that allows the fabric to be bent in multiple directions. Silk fabric has well handfeeling and draping property, it is suitable for studying the dynamic drape performance of fabric. In this paper, we select15 different samples of silk fabrics to measure its structural characteristics, mechanical properties and drapecharacteristics for studying the impact factors of dynamic draping property about silk fabric. A correlation analysis ismade with the measured fabric parameters to get the factors sequence which mainly affects the dynamic drapingproperty of fabric. Experimental result shows that the draping property of silk fabric is affected by many performanceparameters, however, the latitudinal tensile is the biggest impact factor among all these parameters.

Physical and Mechanical Properties of Tenun Pahang Fabrics using Alternative Yarns

2016 ◽  
Vol 13 (2) ◽  
pp. 67
Author(s):  
Engku Liyana Zafirah Engku Mohd Suhaimi ◽  
Jamil Salleh ◽  
Suzaini Abd Ghani ◽  
Mohamad Faizul Yahya ◽  
Mohd Rozi Ahmad
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
The Other ◽  
Silk Fabrics ◽  
Recovery Angle ◽  
Made In

An investigation on the properties of Tenun Pahang fabric performances using alternative yarns was conducted. The studies were made in order to evaluate whether the Tenun Pahang fabric could be produced economically and at the same time maintain the fabric quality. Traditional Tenun Pahang fabric uses silk for both warp and weft. For this project, two alternative yarns were used which were bamboo and modal, which were a little lower in cost compared to silk. These yarns were woven with two variations, one with the yarns as weft only while maintaining the silk warp and the other with both warp and weft using the alternative yarns. Four (4) physical testings and three (3) mechanical testings conducted on the fabric samples. The fabric samples were evaluated including weight, thickness, thread density, crease recovery angle, stiffness and drapability. The results show that modal/silk and bamboo silk fabrics are comparable in terms of stiffness and drapability, hence they have the potential to replace 100% silk Tenun Pahang.

scholarly journals Multicriteria Optimization of the Mechanical Properties in Laminated Seams

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2989
Author(s):  
Halina Szafranska ◽  
Ryszard Korycki
Keyword(s):  
Mechanical Properties ◽  
Optimization Problems ◽  
Comprehensive Evaluation ◽  
Relative Elongation ◽  
Weighted Average ◽  
Bending Rigidity ◽  
Elongation At Break ◽  
Lamination Process ◽  
Weighted Optimization ◽  
Generalized Utility

In order to ensure a comprehensive evaluation of laminated seams in working clothing, a series of research was carried out to determine the correlation between the parameters of the seam lamination process (i.e., the temperature, the time, the pressure) and the mechanical properties of laminated seams. The mechanical properties were defined by means of the maximum breaking force, the relative elongation at break and the total bending rigidity. The mechanical indexes were accepted as the measure of durability and stability of laminated seams. The correlation between the lamination process parameters and the final properties of the tested seams in working clothing was proposed using a three-factor plan 33. Finally, the single-criteria optimization was introduced and the objective functional is the generalized utility function U. Instead of three independent optimization problems, the single problem was applied, and the global objective function was a weighted average of partial criteria with the assumed weight values. The problem of multicriteria weighted optimization was solved using the determined weights and the ranges of acceptable/unacceptable values.

The Structure and Mechanical Properties of Aluminum Cellular Metal With Periodic Cubic Cells

2016 ◽  
Author(s):  
Xiaobing Dang ◽  
Ruxu Du ◽  
Kai He ◽  
Qiyang Zuo
Keyword(s):  
Mechanical Properties ◽  
Relative Density ◽  
Sheet Metal ◽  
Light Weight ◽  
Practical Applications ◽  
Sheet Metal Stamping ◽  
High Stiffness ◽  
The Past ◽  
Cellular Metal ◽  
Metal Stamping

As a light-weight material with high stiffness and strength, cellular metal has attracted a lot of attentions in the past two decades. In this paper, the structure and mechanical properties of aluminum cellular metal with periodic cubic cells are studied. The aluminum cellular metal is fabricated by sheet metal stamping and simple adhesion. Two sizes of specimens with cell sizes of 3mm and 5mm are fabricated. Their relative density and mechanical properties are tested by means of experiments. The results show that the cubic-cell cellular metal has high and predictable strength and hence, can be used for many practical applications.

Dyeing of Silk Fabric with Extracted Dyes from Lichens

2015 ◽  
Vol 1134 ◽  
pp. 165-170
Author(s):  
Nor Atiqah Mohamed ◽  
Mohd Rozi Ahmad ◽  
Muhammad Ismail Abd Kadir ◽  
Asmida Ismail ◽  
Wan Yunus Wan Ahmad
Keyword(s):  
Boiling Water ◽  
Silk Fabric ◽  
Fastness Properties ◽  
Natural Dyeing ◽  
Fermentation Method ◽  
Silk Fabrics ◽  
Colour Coordinates

Two lichens species (ParmotremapraesorediosumandHeterodermialeucomelos)were assessed for dye production using boiling water method (BWM) and ammonia fermentation method (AFM). The dyes were applied on silk fabric. Three types of mordant were used i.e. alum, iron and vinegar through meta-chrome (simultaneous) method of natural dyeing. The K/S values, colour coordinates values and colour differences (ΔE) of the dyed samples were measured. Dyeing fastness properties of the dyed silk fabrics were assessed for washing, rubbing and light. TheP.praesorediosumextracts yielded beige to dull brown shades using BWM and pinkish-purple using AFM, whereas theH.leucomelosextracts produced yellowish-brown shades for both BWM and AFM on the silk substrate. Modanting seemed to be effective in increasing the K/S values of all mordanted fabrics except in the case of silk fabric dyed withP.praesorediosumextracted from AFM. Fastness ratings to washing and rubbing were all very good (5-4) for bothP.praesorediosumandH.leucomelosdyed silk fabrics. The fabrics dyed withP.praesorediosumandH.leucomelosextracts produced strong and deep colours as their ΔE values were higher and increased obviously of all mordanted fabrics. It can be concluded thatP.praesorediosumandH.leucomelosextracted from BWM and AFM methods can be used as an alternative dye source.

Control of properties and structure of steel vessels by cooling in various media at the outlet of rolling and pressing lines

2021 ◽  
pp. 34-38
Author(s):  
R. L. Shatalov ◽  
V. A. Medvedev
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Metal Structure ◽  
Machine Building ◽  
Regression Equations ◽  
Wide Range ◽  
Industrial Mineral ◽  
Cooling Media ◽  
Technological Limitations ◽  
Non Destructive

When controlling the mechanical properties and structure of vessels made of carbon structural steels manufactured by hot deformation on rolling and pressing lines (PPL) of machine-building enterprises of Russia, such cooling media as water, I20 industrial mineral oil, air are used. The applied cooling media are able to provide the workpieces with a given structure with a wide range of mechanical properties. However, the cooling media have a number of technological limitations and conditions of the use, non-compliance with which leads to reject. When cooled in oil, the probability of ignition is high; when cooled in water, hardening cracks may form, and air is not always able to provide the required rate and uniformity of heat transfer to the environment. The efficiency of control of physical and mechanical properties and structure of deformed vessels made of 50 steel by cooling in TERMAT polymer aqueous solutions in different concentrations on PPL of the plant of JSC NPO Pribor was studied. The effect of varying the concentration from 2 to 9% of TERMAT polymer on the formation of metal structure, as well as physical and mechanical properties of hot-deformed vessels was studied. The results of testing the strength and plastic characteristics of vessels by destructive and non-destructive control methods are presented. According to the results of physical and mechanical properties, regression equations were obtained with at least 95% reliability of R2, which establish the relationship between the controlled plastic and strength parameters of the vessel metal`s properties. The conducted researches allowed to compare the indicators of the main physical and mechanical properties of steel vessels at the PPL outlet and to propose methods of inhomogeneity control that reduce time and material costs by 5–10% during the tests.

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