scholarly journals Effect of Vulcanization Process Parameters on the Tensile Strength of Carcass of Textile-Rubber Reinforced Conveyor Belts

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7552
Author(s):  
Tsegaye Sh. Lemmi ◽  
Marcin Barburski ◽  
Adam Kabzinski ◽  
Krzysztof Frukacz
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Tensile Property ◽  
Process Parameters ◽  
Conveyor Belt ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Polyamide 66 ◽  
Conveyor Belts ◽  
Vulcanization Process

Textile-reinforced conveyor belts are most widely used in various industries, including in the mining, construction, and manufacturing industries, to transport materials from one place to another. The conveyor belt’s tensile strength, which primarily relies on the property of the carcass, determines the area of application of the belt. The main aim of the current work was to investigate the influence of vulcanization temperature and duration of the vulcanization process on the tensile properties of the carcass part of the conveyor belt. An extensive experiment was carried out on the tensile properties of woven fabrics that were intended to reinforce conveyor belts by aging the fabrics at the temperature of 140 °C, 160 °C, and 220 °C for six and thirty-five minutes of aging durations. Afterward, the textile-reinforced conveyor belts were produced at vulcanization temperatures of 140 °C, 160 °C, and 220 °C for six and thirty-five minutes of vulcanizing durations. The influence of the vulcanization process parameters on the tensile property of fabrics utilized for the reinforcement of the conveyor belt was analyzed. In addition, the effect of the dipping process of woven fabric in resorcinol–formaldehyde–latex on the tensile property of polyester/polyamide 66 woven fabric (EP fabric) was investigated. The investigation results revealed that the tensile strength of the carcass of the conveyor belt was significantly affected by vulcanization temperature. The conveyor belt vulcanized at 160 °C for 35 min has shown the optimum tensile strength, which is 2.22% and 89.06% higher than the samples vulcanized at 140 °C and 220 °C for 35 min, respectively. Furthermore, the tensile strength and percentage elongation at break of conveyor belts vulcanized at 220 °C were almost destroyed regardless of the vulcanization duration.

Impact of Process Parameters on the Tensile Properties of DLP Additively Manufactured ELAST-BLK 10 UV-Curable Elastomer

2021 ◽  
Author(s):  
Asma Ul Hosna Meem ◽  
Kyle Rudolph ◽  
Allyson Cox ◽  
Austin Andwan ◽  
Timothy Osborn ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Ultimate Tensile Strength ◽  
Tensile Properties ◽  
Process Parameters ◽  
Uv Light ◽  
Uv Curable ◽  
Build Orientation ◽  
Static Tensile ◽  
The Impact

Abstract Digital light processing (DLP) is an emerging vatphotopolymerization-based 3D-printing technology where full layers of photosensitive resin are irradiated and cured with projected ultraviolet (UV) light to create a three-dimensional part layer-by-layer. Recent breakthroughs in polymer chemistry have led to a growing number of UV-curable elastomeric photoresins developed exclusively for vat photopolymerization additive manufacturing (AM). Coupled with the practical manufacturing advantages of DLP AM (e.g., industry-leading print speeds and sub-micron-level print resolution), these novel elastomeric photoresins are compelling candidates for emerging applications requiring extreme flexibility, stretchability, conformability, and mechanically-tunable stiffness (e.g., soft robotic actuators and stretchable electronics). To advance the role of DLP AM in these novel and promising technological spaces, a fundamental understanding of the impact of DLP manufacturing process parameters on mechanical properties is requisite. This paper highlights our recent efforts to explore the process-property relationship for ELAST-BLK 10, a new commercially-available UV-curable elastomer for DLP AM. A full factorial design of experiments is used to investigate the effect of build orientation and layer thickness on the quasi-static tensile properties (i.e., small-strain elastic modulus, ultimate tensile strength, and elongation at fracture) of ELAST-BLK 10. Statistical results, based on a general linear model via ANOVA methods, indicate that specimens with a flat build orientation exhibit the highest elastic modulus, ultimate tensile strength, and elongation at fracture, likely due to a larger surface area that enhances crosslink density during the curing process. Several popular hyperelastic constitutive models (e.g., Mooney-Rivlin, Yeoh, and Gent) are calibrated to our quasi-static tensile data to facilitate component-level predictive analyses (e.g., finite-element modeling) of soft robotic actuators and other emerging soft-matter applications.

Optimization of Welding Process Parameters in Novel Friction Stir Welding of Polyamide 66 Joints

2019 ◽  
Vol 969 ◽  
pp. 828-833 ◽  
Author(s):  
R. Nandhini ◽  
R. Dinesh Kumar ◽  
S. Muthukumaran ◽  
S. Kumaran
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Process Parameters ◽  
Welding Process ◽  
Polyamide 66 ◽  
Friction Stir ◽  
Response Characteristics ◽  
Tool Shoulder ◽  
Stereo Microscope ◽  
Friction Plate

The friction stir welding of polyamide 66 with a specially modified tool is studied. A variation of the conventional friction stir welding is investigated by incorporating a friction plate for the purpose of heating the polymer in the course of welding process through the tool shoulder. This in turn, improves the efficiency of the weld. The association of the welding process parameters and the weld performance has been investigated by the grey relational analysis with multi response characteristics like weld tensile strength, percent elongation and hardness. Macrostructure of the weld joint cross section has been explored by Stereo microscope. The maximum weld tensile strength of 63 MPa and a Shore hardness of 60 D at the weld nugget are obtained. The hardness profiles of the welded samples have been analyzed in this investigation.

Effect of Elastane and Thread Density on Mechanical Attributes of Stretch Woven Fabric

2020 ◽  
Vol 7 (1) ◽  
pp. 21-30
Author(s):  
Fahmida Siddiqa ◽  
Md. Mahbubul Haque ◽  
Shamima Akter Smriti ◽  
Nawshin Farzana ◽  
Abu Naser MD. Ahsanul Haque
Keyword(s):  
Tensile Strength ◽  
Elastic Properties ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Number Of Factors ◽  
And Performance ◽  
Tearing Strength

Stretch woven fabrics continue to grow in popularity, offering superior elastic properties and comfort. However, there are a number of factors (e.g., elongation, recovery, growth, tensile strength, tearing strength, and shrinkage) that can affect the attributes and performance of stretch woven fabric. These were investigated in the present study in relation to different elastane content and thread density. Blended cotton woven fabrics containing an increased elastane content gave enhanced elongation and recovery, despite a decrease in thread density. The tensile strength, tearing strength, shrinkage, and fabric growth decreased when the elastane ratio increased, regardless of the decline in warp thread density.

Increased High Temperature Oxidation Resistance of Ni20Cr20Fe5Nb1Y2O3 Alloy with Nano-Sized Grains

2005 ◽  
Vol 486-487 ◽  
pp. 109-112 ◽  
Author(s):  
Il Ho Kim ◽  
S.I. Kwun
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Mechanical Alloying ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Tensile Property ◽  
High Temperature Oxidation ◽  
Room Temperature ◽  
Dispersion Strengthening ◽  
Temperature Oxidation

The oxidation and tensile properties of a Ni20Cr20Fe5Nb alloy and a Ni20Cr20Fe 5Nb1Y2O3 alloy with nano-sized grains were compared with those of the comercial IN718 alloy. The oxidation resistance of the Ni20Cr20Fe5Nb1Y2O3 alloy was superior to that of the Ni20Cr20Fe5Nb and IN 718 alloys. This superior oxidation resistance was the result of both the formation of dense oxides on the surface of the alloy and the interruption of Cr migration in the alloy by the addition of Y2O3. Moreover, the tensile property of the Ni20Cr20Fe5Nb1Y2O3 alloy at room temperature and 400oC was higher than that of the Ni20Cr20Fe5Nb and IN718 alloys by more than 300MPa (30%). This result can be attributed to the dispersion strengthening of Y2O3. The relatively low tensile strength at 600°C and 800°C of the alloys fabricated by mechanical alloying was attributed to grain refinement showing intergranular fracture at high temperatures.

Effects of Heating Period of Time on Tensile Property of Plain Woven Fabric/Epoxy Resin Laminated Composites at High Temperature

2010 ◽  
Vol 34-35 ◽  
pp. 1397-1401
Author(s):  
Guang Wei Chen ◽  
Gui Fang He ◽  
Jia Lu Li
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Epoxy Resin ◽  
Tensile Property ◽  
Laminated Composites ◽  
Tensile Load ◽  
Tensile Tests ◽  
Woven Fabric ◽  
Resin Composites ◽  
Heating Period

The purpose of this paper is to investigate the tensile property of laminated epoxy resin composites reinforced by carbon fiber plain woven fabric with different heating period of time at relatively high temperature. For this purpose, the tensile tests of laminated resin composites are carried out at 150°C and 180°C with 15 minutes, 10 hours and 30 hours heating period of time, respectively. The reasons for the variations of tensile property of these composites with different heating period of time at 150°C and 180°C are analyzed. At 150°C and 180 °C，with heating period of time increasing the tensile strength of samples keep the same level. However at 180 °C the average tensile strength of samples is decreased by 14.95% compared with that at 150°C and the variation coefficient (CV) of tensile strengths at 180°C is much more than that at 150°C. These show that the tensile strength of resin laminated composites is sensitive at high temperature, although the tensile strength of resin laminated composites keeps the same level at same temperature with different heating period of time. The reason of the tensile strength of resin laminated composites decreased at high temperature is that resin has been damaged，which losing the adhesion of fiber and resin, so that these make resin and fiber can not bear the tensile load together. The research results will provide a basic reference for the application of plain woven fabric reinforced laminated resin composites with long using period of time at high temperature.

scholarly journals The Study of Process and Characteristics of Woven Fabric from Plant Fibers of Lidah Mertua (Sansevieria trifasciata P.)

2019 ◽  
Vol 7 (2) ◽  
pp. 207-220 ◽  
Author(s):  
Lisa Oktavia Br Napitupulu ◽  
Asri Widyasanti ◽  
Ahmad Thoriq ◽  
Asep Yusuf
Keyword(s):  
Tensile Strength ◽  
Textile Industry ◽  
Natural Fibers ◽  
Woven Fabrics ◽  
Raw Material ◽  
Woven Fabric ◽  
Plant Fibers ◽  
Weft Direction ◽  
A Value ◽  
Descriptive Method

Sansevieria or known as tongue-in-law plant is an ornamental plant that is quite popular in Indonesia. This plant is very easily cultivated, easy to grow in areas with less water and sunlight. This plant contains potential natural fibers used as raw material requirements for textile industry, specifically in fabric making. The aims of this research were to determine the production process consisting and analyzing the characteristics of woven fabrics from the leaves of the tongue-in-law plant. The method of fibers extraction used the mechanical decortication process and making woven fabric is done using ATBM. The research method used is descriptive method. Based on the results of the study, it is known that the woven cloth of tongue-in-law has color characteristics with a value of L* 69.73; a* 1.86; b* 17,38; H 83,88. Besides that, it is known the mechanical characteristics of the tongue-in-law woven fabric, the tensile strength of the fabric, the weft  direction of 46.05 kg and the warp direction of 19.96 kg; weft direction stretch 22% and stretch direction of the warp of 55.20%; weft direction tear strength 19.17% and wrap direction 4.60%; and air penetrating power 116.2 cm3/cm2/s.The value of the tensile strength of the tongue-in-law woven fabric produced in the warp direction does not meet the standards of SNI 08-0056-2006 woven fabric quality requirements for suit.Therefore, woven fabric produced is intended as a craft material.

scholarly journals Development of Models to Predict Tensile Strength of Cotton Woven Fabrics

2011 ◽  
Vol 6 (4) ◽  
pp. 155892501100600 ◽  
Author(s):  
Zulfiqar Ali Malik ◽  
Mumtaz Hasan Malik ◽  
Tanveer Hussain ◽  
Farooq Ahmed Arain
Keyword(s):  
Tensile Strength ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Yarn ◽  
Linear Regression Models ◽  
Warp Yarn ◽  
Yarn Strength ◽  
Fabric Density ◽  
Cotton Yarns ◽  
Fabric Strength

Tensile strength has been accepted as one of the most important performance attributes of woven textiles. In this work, multiple linear regression models are developed by using empirical data for the prediction of woven fabric tensile strength manufactured from cotton yarns. Tensile strength of warp & weft yarns, warp & weft fabric density, and weave design were used as input parameters to determine warp- and weft-way tensile strength of the woven fabrics. The developed models are able to predict the fabric strength with very good accuracy. Warp yarn strength and ends per 25 mm are found to be the most dominant factors influencing fabric strength in warp direction while weft yarn strength and picks per 25 mm are most vital in weft direction.

The Strength and Stretch of Double Texture Rubber Goods

1930 ◽  
Vol 3 (4) ◽  
pp. 531-543
Author(s):  
T. M. Knowland
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Cotton Fiber ◽  
Small Proportion ◽  
Fiber Strength ◽  
Woven Fabric ◽  
Rubber Compound ◽  
Textile Fibers ◽  
Strength Based

Abstract RUBBER articles may be divided roughly into three classes: (1) pure gum, (2) hard rubber, and (3) various combinations of rubber and textile fibers. This latter class is the largest and possibly the most important of the group, and includes besides tires the bulk of mechanical goods, such as hose, belting and sheet goods of various kinds. Probably no combination of useful materials affords a wider range of possibilities than the various combinations of rubber and textile fibers. In rubber-textile combinations the cotton fiber is ordinarily used to impart tensile strength and to decrease the stretchiness of the product, while the attempt is made to retain at the same time as much resiliency as possible. Most of these combinations are of laminated construction, consisting of alternate layers of rubber compound and woven fabric, the physical properties being controlled by the construction of the fabric and the composition and cure of the rubber compound. Since cotton is usually more expensive on a volume basis than rubber, it is desirable to obtain the maximum tensile properties of the cotton fiber and to restrict its use as much as possible. That this is a difficult matter may be recalled when we compare the actual bursting strength of various mechanical goods with the so-called theoretical or calculated strength based on the additive strengths of the plied up fabrics in the fabricated article; it is at once apparent that only a small proportion of the fiber strength is effectively employed.

Study on cross-directional tensile properties of bamboo-/polypropylene-blended needle-punched non-woven fabrics

2017 ◽  
Vol 47 (6) ◽  
pp. 1342-1356 ◽  
Author(s):  
N Senthil Kumar ◽  
K Shabaridharan ◽  
R Perumalraj ◽  
V Ilango
Keyword(s):  
Tensile Strength ◽  
Experimental Design ◽  
Tensile Properties ◽  
Woven Fabrics ◽  
The Other ◽  
Polypropylene Fibers ◽  
Needle Penetration ◽  
Needle Punching ◽  
The Cross ◽  
Polypropylene Blends

In this study, bamboo and polypropylene fibers have been selected to produce non-woven fabrics using needle punching machines. The non-woven fabrics were produced with bamboo and polypropylene blends of 80%/20%, 20%/80% and 50%/50%, respectively. The cross-directional tensile properties of produced non-woven fabrics were analyzed using Box–Behnken experimental design for three factors and three levels by varying aerial density, punch density and depth of needling penetration. It was observed that the 20% bamboo/80% polypropylene non-woven fabrics have higher tensile strength and elongation than the other two blend proportions. The tensile strength increases with increase in aerial density, punch density and depth of needle penetration.

scholarly journals Electromagnetic wave shielding and mechanical properties of vapor-grown carbon nanofiber/polyvinylidene fluoride composite fibers

2020 ◽  
Vol 15 ◽  
pp. 155892502098595
Author(s):  
Metin Yuksek
Keyword(s):  
Tensile Strength ◽  
Carbon Nanofibers ◽  
Polyvinylidene Fluoride ◽  
Woven Fabrics ◽  
Electromagnetic Shielding ◽  
Woven Fabric ◽  
Shielding Effectiveness ◽  
Composite Fibers ◽  
Conductive Composite ◽  
Electromagnetic Shielding Effectiveness

The demand for multifunctional requirements in aerospace, military, automobile, sports, and energy applications has encouraged the investigation of new conductive composite fibers. This study focuses on the development of Vapor-grown carbon nanofibers (VGCNFs) filled Polyvinylidene Fluoride (PVDF) composite fibers. Polyvinylidene fluoride (PVDF) reinforced with (1, 3, 5, and 8 wt.%) carbon nanofibers were produced as a masterbatch. The production of PVDF and PVDF/CNF composite fibers have been done successfully by using melt spinning processing technique. Conductive woven fabrics were produced with composite fibers on handloom machines to measure electromagnetic interference (EMI) shielding efficiency. Tensile strength of fibers increased with increase in CNF loading up to 3%. The tensile strength displayed a decrease of 5% and 8% CNF loading. Electromagnetic shielding effectiveness (EMSE) of woven fabrics with composite fibers were tested by using the coaxial transmission line method for planar materials standard that is based on ASTM D 4935-10. The electromagnetic shielding effectiveness of woven fabric which is consist of conductive composite fibers were increased with increasing CNFs loading and amount of fabric layers. It can be seen that the woven fabrics displayed between 2–10 dB and 2–4 dB EMSE values in the 15–600 MHz and 600–3000 MHz-frequency range, respectively. Nevertheless, it was observed that conductive filler content, dispersion, and network formation within the composite fibers were highly influent on the electromagnetic shielding effectiveness performance of the structures.

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