Study the Electrical Properties of Surface Mount Device Integrated Silver Coated Vectran Yarn

Simegnaw, Abdella Ahmmed; Malengier, Benny; Tadesse, Melkie Getnet; Gideon, Rotich K.; Langenhove, Lieva Van

doi:10.3390/ma15010272

Cited by 11 publications

(12 citation statements)

References 36 publications

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“…A digital multimeter was used to measure the electrical resistance variations corresponding to varying temperatures. The relationship between the temperature and the electrical resistance of the yarn is expressed using eq .25ex2ex normale normals normalt normali normalm normala normalt normale normald 0.25em normalr normale normals normali normals normalt normala normaln normalc normale 0.25em false( R t false) = R 0 false( 1 + α normalΔ T false) where R 0 , α, and Δ T are the initial resistance at 20 °C, temperature coefficient, and temperature difference between the final and initial temperature, respectively. An initial temperature of 20 °C was selected for this experiment.…”

Section: Methodsmentioning

confidence: 99%

“…The primary reason for the resistance change is the energy the free electron loses in each interaction. 35,41 At 40− 70 °C, the change in resistance measured for the SS yarn was stable and did not exhibit a considerable amount of variation; however, the SC yarn exhibited a substantial amount of resistance variation. The material-dependent temperature coefficient (α) is the term that is used to explain the resistance−temperature relationship (eq 2).…”

Section: Effect Of Temperature On Resistance Of the Yarnmentioning

confidence: 99%

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Electrothermal and Mechanical Characterization of Stainless Steel and Silver-Coated Cabled Yarns for Heating Application

Maurya

Das

Kumar³

et al. 2023

ACS Appl. Eng. Mater.

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The development of conductive fibers and yarns is growing exponentially due to their utilization in wearable electronic textiles for heating, sensing, and energy storage applications. Herein, we report the electrothermal and mechanical properties of stainless steel (SS) and silver-coated (SC) cabled yarn for application in knitted wearable heating pads. SC yarn offers superior heating performance over SS yarn due to its low resistance, but its long-term durability, washability, and thermal stability are lower than SS yarn. The SS yarn is thermally stable up to 70 °C with minimal resistance change. However, the resistance of SC yarn increased by 81.12%, and the average temperature was reduced by 23.23% due to the oxidation of silver in an open environment after exposure for 50 days. The localized heating pad was designed using SC and SS cabled yarn. The temperature of the SC-based pad was 37.5 °C, while the temperature of the SS-based pad was 34.3 °C at a 9 V DC power supply. However, the variation between the maximum and minimum surface temperatures is considerable in the case of an SC-based heating pad.

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Section: Methodsmentioning

confidence: 99%

Section: Effect Of Temperature On Resistance Of the Yarnmentioning

confidence: 99%

Electrothermal and Mechanical Characterization of Stainless Steel and Silver-Coated Cabled Yarns for Heating Application

Maurya

Das

Kumar³

et al. 2023

ACS Appl. Eng. Mater.

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“…The electrical properties of yarns have been studied extensively. [20][21][22][23] For example, the authors of 24 studied antistatic yarns (containing bicomponent fibers with a carbon component) and confirmed the linear relationship between ER and clamping length. Moreover, the nonlinear behavior of ER on clamping length was observed for yarns containing 20% stainless steel fibers of staple length.…”

Section: Introductionmentioning

confidence: 92%

Textile-based weft knit strain sensor: Experimental investigation of the effect of stretching on electrical conductivity and electromagnetic shielding

Palanisamy

Tunáková

Tunák

et al. 2022

Journal of Industrial Textiles

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Recently, the research and development of textile-based sensors have attracted considerable attention. Changes in electrical conductivity (EC) and electromagnetic (EM) shielding effectiveness (SE) during external stimuli are the most frequently studied output. In this study, the EC and EM SE of an electro-conductive 1 × 1 rib knitted fabric made of metal-coated yarn were investigated during uniaxial and biaxial stretching. According to a theoretical survey, 2 main mechanisms are expected to influence the EC of the fabric under mechanical stress: the contact resistance at the junction of two yarns at low levels of applied force and the electrical resistance (ER) of yarn at high stress. Therefore, the electromechanical properties of single, single-loop, and multiloop yarns were also explored to explain the knitted fabric behavior during uniaxial and biaxial stretching. The SE of the knitted fabric varied from 63 to 47 dB based on the type and level of stretching. Using tests with yarns and crocheted chains, we confirmed that the effect of contact points and resistance on the entire ER textile unit prevails at low deformations. Further, the SE increased almost linearly with deformation during wale-wise stretching. The SE results correlate well with the ER values, which reflect the contact and longitudinal resistances of the knitted fabric. The higher the ER, the lower the SE. Notably, the porosity, which changes during stretching, needs to be considered in estimating SE. It was experimentally confirmed that the knit electro-conducite fabric could be used as a wireless strain sensors.

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“…In addition, the total electrical resistance of the SMD embedded e-yarn was dependent on the resistance of the conductive yarn, the resistance of the solder connector, and the resistance of the SMD resistor. Therefore, the total electrical resistance of the SMD resistor integrated e-yarn can be calculated by equation (3): 34 or where U denotes the voltage source, V is the voltage drop at each node, I is the current flow in the circuit, normal normalRnormalT is the total resistance of the e-yarn, normalRnormally denotes the resistance of the left amber strand metal-clad conductive yarn. normalRnormalC represents the resistance of the yarn to the solder pad connection, normalRnormalR represents the resistance of the SMD resistor, and normalRnormalry is the electrical resistance of the right amber strand metal-clad conductive yarn.…”

Section: Encapsulation Of the E-yarnmentioning

confidence: 99%

Connecting surface-mounted electronic elements with amber strand metal-clad conductive fibers by reflow soldering

Simegnaw

Malengier

Getnet

et al. 2023

Textile Research Journal

Self Cite

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Electronic yarns contain electronic components which are fully embedded into the conductive yarn’s structure before manufacturing smart textile garments or fabrics. To accept comprehensively the electronic textiles, it is essential to integrate the electronic components into/onto the conductive textile yarn without compromising the quality of the textile substrate. Therefore, one of the solutions is to create flexible and stretchable conductive yarn that contains a small surface-mounted electronic component embedded in the fibers of the conductive yarn. The purpose of this research work is to manufacture and subsequently evaluate the physical and electromechanical properties of amber strand (Toyobo’s p-phenylene benzobisoxazole fiber zylon) yarns with embedded surface-mounted device components. Using a benchtop reflow-soldering machine, the surface-mounted device component was successfully inserted into the amber strand conductive yarn. Then the developed electronic yarn was coated using thermoplastic polyurethane for encapsulation purposes. Furthermore, reliability tests of the electrical and mechanical properties of the electronic yarn (tensile strain and washing) were carried out. From the results it can be seen that the developed thermoplastic polyurethane encapsulated electronic yarn had a tensile strength of 37.38 N with a 4.1 mm extension. Furthermore, the relationship between the strain and washing action on the electrical resistance of the developed electronic yarn was experimentally investigated. The analytical finding shows that mechanical stress and laundry washing had a significant influence on the electrical resistance of the electronic yarn.

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Study the Electrical Properties of Surface Mount Device Integrated Silver Coated Vectran Yarn

Cited by 11 publications

References 36 publications

Electrothermal and Mechanical Characterization of Stainless Steel and Silver-Coated Cabled Yarns for Heating Application

Electrothermal and Mechanical Characterization of Stainless Steel and Silver-Coated Cabled Yarns for Heating Application

Textile-based weft knit strain sensor: Experimental investigation of the effect of stretching on electrical conductivity and electromagnetic shielding

Connecting surface-mounted electronic elements with amber strand metal-clad conductive fibers by reflow soldering

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