Di dalam tesis ini, satu model dua-dimensi penebat komposit polimer dimodelkan untuk
belajar pengagihan medan elektrik di atas permukaan penebat di bawah pengaruh
titisan air yang berubah bentuk dengan sudut kenalan titisan air yang berbeza dan juga
untuk menganalisis kesan penebat dengan keberadaan nano pengisi alumina dan ketidak
beradaan nano pengisi alumina dengan pemuatan kepekatan yang berbeza. Ia
disimulasikan menggunakan perisisan kaedah unsur terhingga (FEM) yang dinamakan
Comsol Multiphysics versi 5.2a. Kaedah analisis ini mengikut standard pengesanan
permukaan dan hakisan iaitu IEC 60587. Parameter yang digunakan di dalam simulasi
ini ialah sudut kenalan titisan air, dan ketelusan relatif SiR/EPDM dengan kehadiran
dan ketidakhadiran nano pengisi. Tahap pemuatan kepekatan nano pengisi yang
digunakan ialah 1 Vol % dan 2 Vol % dan juga sudut kenalan titisan air di variasikan
iaitu pada 30°,60°,90° dan 120°. Keputusan menunjukkan terdapat penumpuan medan
elektrik di antara pertemuan permukaan titisan air,permukaan penebat dengan udara.
Magnitud medan elektrik berubah daripada tinggi ke rendah dari keadaan hidrofilik
kepada hidrofobik. Pertambahan nano pengisi mengurangkan magnitud medan elektrik.
Hubungan antara pengedaran medan elektrik dan kesemua parameter dikenal pasti.
Hubungan ini di pelajari dengan memplot graf pengedaran medan elektrik berlawanan
dengan semua parameter yang digunakan.
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In this paper, a two-dimensional composite polymer insulator was model to study the
electric field distribution on the insulator surface in the influence of water droplet
deformation with different contact angle and to analyze the effect of insulator material
with and without alumina nanofiller with different loading concentration. It was
simulated using the finite element software (FEM) named Comsol Multiphysics 5.a
version. This method of analysis followed the standard of surface tracking and erosion
which is IEC 60587. Parameters that were used in this simulation were the contact angle
of the water droplet and the relative permittivity of the SiR/EPDM with and without
nano-filler. The loading concentration of nanofiller used were 1 Vol % and 2 Vol % and
the contact angle of water droplet were varies at 30°,60°,90° and 120°. The results
showed that there were electric field intensification at the interface between the surface
of water droplet, insulator surface and air. The electric field distribution changed from
high to low in value from hydrophilic to hydrophobic state. The addition of nanofiller
reduced the magnitude of the electric field. The relationship of the electrical field
distribution and all of these parameters were figured out. These relationship were
studied by plotting the graph of electrical field distribution versus all of these
parameters used.
Electric field analysis of water droplet deformation on solid insulation surface using finite element method / Nurina Zulkifli