Ristiani, Deril (2016) Desain Double Layer Radar Absorbing Materials Dengan Metode Dallenbach Layer Berbasis Bahan Magnetik Alam Tanah Laut Dan Polianilin. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Pelapisan double layer dengan menggunakan material PANi, BaM, dan komposit PB telah berhasil dibuat sebagai Radar Absorbing Material (RAM). Barium M-Heksaferit (BaFe11,7Zn0,3O19) dan PANi masing-masing disintesis dengan metode kopresipitasi dan reaksi kimiawi. Material RAM dikarakterisasi menggunakan X-ray diffraction (XRD), RCL meter, Fourier Transform Infrared (FTIR), Vibrating Sample Magnetometer (VSM), Scanning Electron Microscope (SEM), dan Vector Network Analyzer (VNA). Hasil karakterisasi menunjukkan bahwa PANi, BaM, dan komposit PB memiliki nilai konduktivitas listrik sebesar 0,2371 Scm-1, 6x10-6 Scm-1, dan 7,5x10-3 Scm-1. Sifat kemagnetan BaM berhasil direduksi dengan penambahan doping ion Zn2+, diperoleh nilai medan koersivitas 0,0506 Tesla. Rugi refleksi single layer (BaM, PANi) dan double layer (P-B, P-PB, B-PB) diukur menggunakan VNA. Desain double layer menghasilkan nilai rugi refleksi terbesar dibandingkan dengan desain single layer. Berdasarkan penelitian yang telah dilakukan diketahui bahwa double layer P-PB memiliki rugi refleksi maksimum yaitu sebesar -49,6 dB dengan energy gelombang mikro yang diserap ~99,89%. Double layer efektif memperlebar pita penyerapan pada rentang frekuensi X-Band dengan karakteristik membentuk puncak serapan pada frekuensi tertentu yaitu BaM 8,6-10 GHz, PANi 8,0-9,3GHz, P-B 8,1-9,64 GHz, B-PB 8,5-9,98 GHz, dan P-PB 8,2-10 GHz. Pelebaran pita penyerapan paling optimal adalah pada pelapisan
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double layer P-PB dengan lebar frekuensi penyerapan sebesar 1,8 GHz
======================================================================================== Double layer coating of PANi, BAM, and PB composites material has successfully made as Radar Absorbing Material (RAM). Barium M-Heksaferit (BaFe11,7Zn0,3O19) and PANi each was synthesized by coprecipitation and chemical reactions. RAM were characterized by X-ray diffraction (XRD), RCL meter, Fourier Transform Infrared (FTIR), Vibrating Sample Magnetometer (VSM), Scanning Electron Microscope (SEM), and Vector Network Analyzer (VNA).The result were shown that PANi, BaM, and PB composites have electrical conductivity value each respectively 0.2371 Scm-1, 6x10-6 Scm-1, and 7,5x10-3 Scm-1. The magnetic properties of BaM was reduced by the addition of Zn 2+ ion, it have the coercivity field on 0.0506 Tesla. Reflection loss of single layer (BAM, PANi) and double layer (P-B, P-PB, B-PB) were measured using VNA. Double layer design have produced the greatest reflection loss value than single layer design. Based on this experiment we know that double layer P-PB have reflection loss optimum -49.6 dB with absorbed microwave energy is ~ 99.89%. Double layer is effective to increase of absorption bandwidth on X-Band frequency range, the characteristic of forming absorption peak at a specific frequency that are BaM 8.6 to 10 GHz, PANi 8,0-9,3GHz, P-B 8.1 to 9.64 GHz, B-PB 8.5 to 9.98 GHz, and P-PB 8.2 to 10 GHz. Increasing of absorption bandwidth is the most optimum on double layer coating P-PB with wide absorption frequency is 1.8 GHz
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSFi 551.635 3 Ris d-1 |
| Uncontrolled Keywords: | barium M-heksaferit, double layer, konduktivitas, polianilin, radar, RAM, reflection loss. |
| Subjects: | Q Science > QC Physics > QC765 Magnetic materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK452 Electric apparatus and materials |
| Divisions: | Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 21 Feb 2020 07:25 |
| Last Modified: | 21 Feb 2020 07:25 |
| URI: | http://repository.its.ac.id/id/eprint/75106 |
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