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Comparative Studies of Electrical Resistance in Woven and Non-woven Jute Fabrics at Different Input Voltage

Sharmin Akter
SO
BJRI, Manik Mia Avenue, Dhaka-1207

Tahnin Bintay Kamal
SO
BJRI, Manik Mia Avenue, Dhaka-1207

Ashraful Alam
SO
BJRI, Manik Mia Avenue, Dhaka-1207

Mahmuda Khatun
SSO
BJRI, Manik Mia Avenue, Dhaka-1207

Manika Rani Debnath
SSO
BJRI, Manik Mia Avenue, Dhaka-1207

Md. Zobaidul Hossen
SO
BJRI, Manik Mia Avenue, Dhaka-1207

Abstract/ Executive Summary:

The use of jute fabrics is showing an increasing trend in the textile, building and automobile sectors. Electrical properties such as conductivity, resistance, dielectric constant, insulation, etc. are the essential factor for consideration for using jute fabrics in these sectors. For this reason, a study was carried out to find out the changes in electrical properties of woven and nonwoven jute fabrics at different input voltage. The electrical resistance of jute fabrics was measured by a digital impedance meter. Effects of input voltage, gauge length, and type of fabrics on electrical resistance were studied and analyzed. Experimental results indicated that the electrical resistance of woven and needle punched nonwoven jute fabrics decreased with the increase of input voltage and increased with the increase in gauge length. The highest value of electrical resistance in woven jute fabrics was 394 Mohm/cm at 2 cm gauge length and 60 V of the input voltage. In nonwoven jute fabrics, the maximum electrical resistance was 257 M ohm/cm which was obtained at 2 cm gauge length and 60 V of electrical resistance. Woven jute fabric showed a higher value of resistance than nonwoven jute fabric for different voltages. It was also observed that the electrical resistance varied with the type of fabrics used in this study.

Keywords: Woven, Non-woven, Voltage, Gauge length, Jute-fabric, Needle punched, and Electrical resistance

Location: BJRI

Start Date:

End Date:

Program Area: Physical and Mechanical Properties

Commodity: Jute

Objectives:

In the literature, there is very few information regarding the insulating properties of jute fabrics. Keeping this in mind, a study has been made to measure and analyze the electrical resistance of different jute fabrics in order to understand the effects of different input voltage or different gauge length or different types of fabrics. It will help to use jute fabrics in technical textiles where electrical resistance property is required during use.

Methodology:

The experiment was performed by using Digital Impedance Meter. This meter is a digital format of LRC circuit. Samples are placed at the fixed terminal of the meter and the expected results are shown on the screen. The resistance was measured by changing input voltage at first and collected respective results from the screen. Results for a different gauge length of two fabrics were done by following the same procedure. At first woven jute fabric sample of 1.0 cm gauge length was placed on the respective terminal. The sample was in series with a known resistance 10Mohm and was connected to a DC power supply. The voltage was changed from 60 to 100 volts and the corresponding current through the sample was measured. The current was taken after 10 seconds to measure resistance. These steps were repeated for woven nonwoven jute fabrics of 1.0, 1.5 and 2.0 cm of the gauge length. Experimental readings were taken to draw a V-I characteristics curve. The V-I characteristics of each slope were determined. This experiment was performed at room temperature (30°C).

Source of Information: Aust. J. Eng. Innov. Technol., 2(6), 106-112

Article Link (Online Journal): https://doi.org/10.34104/ajeit.020.01060112 http://www.universepg.com/journal/ajeit

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In a word, the electrical resistance of woven and nonwoven jute fabrics decreases with the increase of input voltage. For non-conducting material, resistance remains constant with the increase of voltage as current also increases with the increase of voltage. Resistance values increased with an increase in the gauge length for both jute fabrics. The non-woven jute fabric has lower resistance power than the woven jute fabric and the reason is the current is not passing proportionately through the fabrics and hence resistance decreases. There is always a direction that is not passing a current through it in woven jute fabric. Breakdown of insulation usually results in a significant fall at high voltages. It signifies that if we want to use nonwoven and woven jute fabrics for electrical purposes, we should take special care of using higher voltages. The resistance increases with the increase of gauge length of fabrics. It means that the gauge length is a more important matter of consideration for using woven and non-woven jute fabrics as insulators. Overall, the woven jute fabrics exhibited higher resistivity properties than the needle punched non-woven jute fabrics.

Knowledge Management: Journal