Puspitasari, Rahma Fitri (2018) Pengaruh Ketebalan Lapisan Material Penyerap Radar (RAM) dengan Metode Double Layer pada Frekuensi Panjang Gelombang X-Band. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pelapisan double layer dengan variasi ketebalan lapisan pada material penyerap radar (RAM), dengan Polianilin dengan dopan DBSA sebagai material konduktif telah berhasil disintesis dengan metode polimerisasi, begitu pula Barium M-Heksaferit sebagai material magnetik dengan dopan Zn2+ pada X=0,9 berhasil disintesis dengan metode solid state. Material penyerap radar (RAM) dikarakterisasi dengan menggunakan XRF, XRD, FPP, FTIR, VSM, dan VNA. Hasil karakterisasi diperoleh nilai konduktivitas Polianilin dan Barium M-Heksaferit berturut-turut 4,4 × 10-1 S/m dan 2,09 × 103 S/m, yang berada pada rentang nilai konduktivitas bahan semikonduktor. Adanya doping Zn2+ berhasil mereduksi sifat hardmagnet dari Barium M-Heksaferit menjadi bersifat softmagnet, dengan nilai medan koersivitas (Hc) 0,0181 Tesla. Nilai reflection loss diukur dengan menggunakan VNA. Berdasarkan penelitian dan pengujian yang telah dilakukan diperoleh bahwa desain double layer dengan variasi PANi : PANi + BaM (3:1) mempunyai nilai reflection loss maksimum, yakni -29,6003 dB, dengan energi gelombang yang diserap yakni 96,69%. Sedangkan pada variasi PANi : PANi + BaM (3:1) mempunyai nilai reflection loss minimum, yakni -15,2937 dB, dengan energy yang diserap yakni 82,21%. Selain itu, variasi ketebalan lapisan juga berpengaruh pada lebar pita penyerapan, dengan membentuk puncak serapan paling efektif pada frekuensi tertentu, yakni pada variasi D dengan lebar pita penyerapan paling efektif adalah 1,81 GHz pada frekuensi 9,81 – 8 GHz.
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Double layer coating with layer thickness variation on radar absorbent material (RAM), with Polianiline using DBSA dopants as conductive materials have been successfully synthesized by polymerization methods, as well as Barium M-Hexaferrit as magnetic material using Zn2+ for dopants at X = 0.9 successfully synthesized by solid state method. The radar absorbent material (RAM) is characterized using XRF, XRD, FPP, FTIR, VSM, and VNA. The result of characterization was obtained conductivity value of Polianiline and Barium M-Hexaferrit, that are 4,4 × 10-1 S/m and 2,09 × 10-3 S/m. Both materials are in the range of conductivity values of semiconductor materials. The presence of Zn2+ doping successfully reduced the hardmagnet properties of Barium M-Hexaferrit to softmagnet, with 0,0181 Tesla for coercivity field (Hc). The reflection loss value is measured using VNA. Based on the research and testing, it was found that the double layer design with variation of PANi: PANi + BaM (3: 1) has a maximum reflection loss value of -29,6003 dB, with the absorbed wave energy of 96,69%. While in the variation of PANi: PANi + BaM (3: 1) has a minimum reflection loss value, that is -15,2937 dB, with energy absorbed ie 82,81%. Layer thickness variations also affect the absorption band width, by forming the most absorption peak at a particular frequency at variation D with the most effective absorbtion is 1,81 GHz at frequency 9,81 – 8 GHz.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSFi 537.015 1 Pus p-1 3100018076896 |
| Uncontrolled Keywords: | Barium M-Heksaferit, double layer, kemagnetan, konduktivitas listrik, polianilin, reflection loss |
| Subjects: | Q Science > QC Physics > QC162 Adsorption and absorption T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. U Military Science > U Military Science (General) |
| Divisions: | Faculty of Natural Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Rahma Fitri Puspitasari |
| Date Deposited: | 15 Jul 2021 04:13 |
| Last Modified: | 15 Jul 2021 04:13 |
| URI: | http://repository.its.ac.id/id/eprint/53524 |
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