scholarly journals Practicing Response Surface Designs in Textile Engineering: Yarn Breaking Strength Exercise

2021 ◽  
Author(s):  
Nefise Gönül Şengöz
Keyword(s):  
Quality Control ◽  
Response Surface ◽  
Breaking Strength ◽  
Raw Material ◽  
Feasible Region ◽  
Main Concept ◽  
Fiber Properties ◽  
Contour Plots ◽  
Response Surface Designs ◽  
Yarn Production

Predicting properties of end product from known properties of raw material is an important part of quality control in manufacturing. Main concept in this research is to reach a specified property of end product from known properties of raw material by attaining response surface designs with feasible region. The Ne20–19.21 T/inch yarn breaking strength (response, desired value 450 cNs) is acquired from cotton fiber properties (variables). The relationship between response and variables are obtained in response surface drawings and contour plots. The area showing the desired value in contour plots are colored in lilac and are intersected to obtain the feasible regions. By reading backwards from the feasible region borders, the variable value ranges are reached which will give the desired value of the response is obtained. When this information to start the yarn production is ready, the cotton lots containing these fiber property value ranges will be bought or from raw material in hand we will be read which yarn breaking strength will occur at the end of production. It was concluded that response surface designs with feasible region are quick, practical, and effective tools, provide valuable results, contribute a lot to quality control, and are beneficial in textile quality control.

Extraction of Polysaccharide From Zizyphus Lotus Fruits

2012 ◽  
Vol 8 (3) ◽  
Author(s):  
Moncef Chouaibi ◽  
Leila Rezig ◽  
Khaled Ben daoued ◽  
Nesrine Mahfoudhi ◽  
Habib Bouhafa ◽  
...  
Keyword(s):  
Response Surface ◽  
Ethanol Concentration ◽  
Gel Permeation Chromatography ◽  
Processing Parameters ◽  
Physicochemical Analysis ◽  
Raw Material ◽  
Extraction Time ◽  
Extraction Temperature ◽  
Optimal Processing ◽  
Contour Plots

Abstract In this study, response surface methodology (RSM) was used to optimize the extraction conditions of polysaccharides from the pulp of Zizyphus lotus fruit. A central composite rotatable design (CCRD) was used for experimental design and analysis of the results to obtain the optimal processing parameters. Ethanol concentration, extraction temperature, extraction time and water to raw material ratio were found to have a significant effect ( p < 0.05) on the yield of Zizyphus lotus polysaccharide. The 3-D response surface and contour plots, derived from the mathematical model, were applied to determine the optimal conditions. The optimum conditions were as follows: water to raw material ratio 22.04:1, ethanol concentration of 83.30 %, extraction time of 2.65 h, and extraction temperature of 66.31 °C. Under these conditions, the experimental percentage value was 17.35±0.07 %, which is in well close agreement with the value predicted by the model (17.29 %). The results of physicochemical analysis showed that the main sugar composition of Zizyphus lotus polysaccharide, purified by Sephadex G-75 gel permeation chromatography, was glucose followed by arabinose, mannose and rhamnose.

Optimized Extraction of Ganglioside from Sika Deer Antler

2013 ◽  
Vol 850-851 ◽  
pp. 1133-1136
Author(s):  
Ni Na Bao ◽  
Yong Guang Yin ◽  
Quan Kai Wang
Keyword(s):  
Response Surface ◽  
Sika Deer ◽  
Soluble Fraction ◽  
Maximum Yield ◽  
Polynomial Equation ◽  
Raw Material ◽  
Deer Antler ◽  
Box Behnken Design ◽  
Order Polynomial ◽  
Contour Plots

In this study the extraction of ganglioside from the lipid soluble fraction of sika deer antler was investigated using response surface methodology (RSM). A three-level Box-Behnken design which was based on the results of a single-factor test was employed to optimize the parameters for extraction of ganglioside. The experimental results were fitted with a second-order polynomial equation by a multiple regression analysis. By solving the regression equation and also by analyzing the response surface contour plots, the optimal ganglioside extraction conditions were determined: ratio of liquid to raw material 11, temperature 40°C and time 7min, and the maximum yield of ganglioside extraction was 1.25%.

Development of the Woolen 48Nm Cashmere Yarn

2013 ◽  
Vol 750-752 ◽  
pp. 2303-2306
Author(s):  
Li Xin Huang
Keyword(s):  
Quality Control ◽  
Control System ◽  
Parameter Optimization ◽  
Material Selection ◽  
Raw Material ◽  
Process Equipment ◽  
Transformation Parameter ◽  
High Count ◽  
Yarn Production ◽  
Raw Material Selection

High-count cashmere is the inevitable requirement of the high-end yarn cashmere products.To the short of the high-count cashmere yarn production and the difficult of spinning,From raw material selection, technological process, equipment transformation, parameter optimization, temperature and humidity control and other aspects,we analysised the high-ount cashmere yarn production process and quality control system,The development of the woolen 48Nm cashmere yarn has been done,it is of first class.

Optimization of the Ultrasonic Extraction of Gypenoside III from Gynostemma pentaphyllum by Response Surface Methodology

2012 ◽  
Vol 550-553 ◽  
pp. 1866-1870
Author(s):  
Xiao Dan Tang ◽  
Hai Yang Hang ◽  
Shao Yan Wang ◽  
Jing Xiang Cong
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Extraction Yield ◽  
Raw Material ◽  
Extraction Temperature ◽  
Optimal Conditions ◽  
Gynostemma Pentaphyllum ◽  
Bioactive Component ◽  
Yield Value ◽  
Ultrasonic Time

Gypenosides III is a major bioactive component which is rich in Gynostemma pentaphyllum. For better utilization of the native resource, response surface methodology was used to optimize the extraction conditions of gypenosides III from G. pentaphyllum. The effects of three independent variables on the extraction yield of gypenosides III were investigated and the optimal conditions were evaluated by means of Box-Behnken design. The optimal conditions are as follows: ratio of ethanol to raw material 25, extraction temperature 58°C and ultrasonic time 25min. Under these conditions, the yield of gypenoside III is 1.216±0.05%, which is agreed closely with the predicted yield value.

Optimization of Microwave Extraction Process by Response Surface Methodology of Flavonoids from Tussilago farfara L.

2013 ◽  
Vol 763 ◽  
pp. 246-249
Author(s):  
Xiao Song ◽  
Peng Zhao
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Power ◽  
Extraction Process ◽  
Raw Material ◽  
Extraction Time ◽  
Microwave Extraction ◽  
Water Solvent ◽  
Tussilago Farfara ◽  
Optimum Extraction

Flavonoids from Tussilago farfara L. was extracted with the assistance of microwave.Box-Behnken design (BBD) was employed to optimize extraction time; microwave power and ratio of water to raw material to obtain a high flavonoids yield.The optimum extraction conditions were as follows: 73.3% ethanol-water solvent, time 16.25 min and ratio of solvent to raw material 36.2ml/g.The yield of flavonoids was 11.37% based on the above mentioned conditions.

scholarly journals Content of heavy metals in Gentiana lutea L. roots and galenic forms

2007 ◽  
Vol 72 (2) ◽  
pp. 133-138 ◽  
Author(s):  
Dragoja Radanovic ◽  
Svetlana Antic-Mladenovic ◽  
Miodrag Jakovljevic ◽  
Mirjana Kresovic
Keyword(s):  
Heavy Metals ◽  
Quality Control ◽  
Soil Analysis ◽  
Root Tissue ◽  
Raw Material ◽  
Potential Hazard ◽  
Gentiana Lutea ◽  
Liquid Extract ◽  
Very High

An experimental field for the cultivated production of Gentiana lutea L. was established five years ago at the Suvobor Mountain, Serbia. Soil analysis of this area revealed the occurrence of high pseudo-total (Ni - 1270 mg/kg, Cr - 423 mg/kg, Co - 385 mg/kg) and available (especially Ni - 133 mg/kg) heavy metals contents in the soil. Hence, the aim of this research was to evaluate the quality of Gentiana lutea L. - roots and galenic forms (liquid extract in 70 % ethanol, spissum and siccum) produced from the roots, because, for most plants, heavy metals accumulate in the root tissue. The amounts of Ni and Cr found in the analyzed roots were very high (54 mg/kg and 14 mg/kg, respectively). The efficiency of ethanol in extracting heavy metals from the roots varied depending on the particular element. The highest efficiency was obtained for Ni (41.3 %), then for Cd (39.5 %), Pb (37.0%) and Co (30.4 %). According to this, a potential hazard exists for humans, if gentian's galenic forms are produced from the raw material with high heavy metals contents. It is concluded that quality control of the raw material must be carried out before further utilization of gentian. .

scholarly journals Cluster analysis of fracturing in the deposits of decorative stone for the optimization of the process of quality control of block raw material

2016 ◽  
Vol 5 (3 (83)) ◽  
pp. 21-29 ◽  
Author(s):  
Ruslan Sobolevskyi ◽  
Natalia Zuievska ◽  
Valentyn Korobiichuk ◽  
Oleksandr Tolkach ◽  
Volodymyr Kotenko
Keyword(s):  
Cluster Analysis ◽  
Quality Control ◽  
Raw Material

scholarly journals Research of Loop Transferred Structures on V-Bed Flat Knitting Machine

2020 ◽  
Vol 8 (6) ◽  
pp. 2565-2570
Keyword(s):  
Mechanical Properties ◽  
Service Sector ◽  
Breaking Strength ◽  
Life Time ◽  
Volume Density ◽  
Raw Material ◽  
Loop Length ◽  
Technological Parameters ◽  
Pattern Effect ◽  
Stitch Density

Today, the production of knitwear is developing at a faster pace. In industry, trade and the service sector, the production of knitwear, combining high technology and low cost, with good consumer properties is urgently required. Consumers today are looking for comfort, fashion and style, which results in ever-changing demands on the apparel market. As the consumer’s requirements to quality and appearance of product are daily increasing, the attention to the question of replacement of a smooth cloth on wide assortment with pattern effect is sharply brought. This work deals with the analysis of technological parameters and physical-mechanical properties of the knit fabric with pattern effect. With the aim of to expand the assortments of knitwear and to use the technological capabilities of double-bed flat knitting machines in fullest extent possible, on the base of rib structure, by using of loop transference 2 new variants of combined structure were developed and recommended. Samples differ from each other by the rapport and pattern effect of the knit structure. Technological parameters, such as loop length, stitch density, surface and volume density, physical-mechanical properties, such as breaking strength and elongation of newly developed combined knit structures were also determined by experimental method. Loop length and stitch density are important variables, that by changing them, the surface and volume density can be changed, that can manage the raw material consumption and determine the quality of knit fabrics. Breaking strength and elongation are important and decisive parameters for end uses since low strength properties shorten the useful life time as well disable the functionality of these products. Patterns of influence of structural elements, such as transferred loops on the surface density and volume density of knitwear was established. It is found that offered structures have some advantages to compare to basic structure. On the aim of resource economy technology, they give a possibility of raw material expenditure decreasing 22-47%.

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