New leakage current parameters for newly developed polymeric composite optimized by response surface methodology

Aminudin, Aman (2013) New leakage current parameters for newly developed polymeric composite optimized by response surface methodology. UNSPECIFIED thesis, UTeM.

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Abstract

Since polymeric composite insulations are well accepted in high voltage application, a large number of important studies and research activities for improvement on their perfonnance had been attained. It involves the development of newly polymeric composite, the understanding of deterioration, the proper dimensioning, design and manufacturing process, and the development of practical testing, monitoring and reliable methods of measuring. In this work, a new polymeric composite insulation is developed based on thermoplastic polymer and waste material. The proposed composite materials are Polypropylene (PP) as a matrix and Artificial Wollastonite (AW) as filler with alongside of Alumina Trihydrate (ATH). An A W is a product of waste glass and seashell. X-ray diffraction (X-RD) technique is applied to reveal the chemical composition of an A W. Then Response Surface Methodology (RSM) statistical technique is employed in order to obtain the optimum ratio of composite against dielectric strength performance. Furthermore, this optimum ratio of the proposed composite is subjected to tracking and erosion tests under standard and non-standard tests by Incline Plane Tracking (IPT) test. The nonstandard IPT test is conducted to simulate Leakage Current (LC) on initial and continuous tracking voltage as well as surface condition events for composite. A new method of surface condition classification is introduced using Spectrogram TimeFrequency Representation (TFR) technique. From the X-Ray diffraction result, it shows that A W resembles natural wollastonite is able to be produced from waste material. Next, a RSM statistical technique and analysis of variants show the best compound formulation is 80% PP and 20% A W - 1 OOpph ATH. By Spectrogram analysing technique with new LC signal parameters, the limitation of non-stationary signal analysis by Fast Fourier Transforms (FFT) can be overcome and surface condition and its classification can be determined simultaneously.

Item Type: Thesis (UNSPECIFIED)
Uncontrolled Keywords: polymers, polymeric composites
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Library > Tesis > FKE
Depositing User: Salleh Mohd Nor
Date Deposited: 21 Oct 2015 09:03
Last Modified: 13 May 2022 10:59
URI: http://eprints.utem.edu.my/id/eprint/15044
Statistic Details: View Download Statistic

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