Analisis Pengaruh Jarak Pole, Besar Arus, dan Jumlah Lilitan pada Coil Gun Electromagnetic Launcher Terhadap Kecepatan Pelontar

Ardana, Yusuf Wahyu (2023) Analisis Pengaruh Jarak Pole, Besar Arus, dan Jumlah Lilitan pada Coil Gun Electromagnetic Launcher Terhadap Kecepatan Pelontar. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Metode Split-Hopkinson Pressure Bar (SHPB) adalah metode yang digunakan untuk mendapatkan karakteristik dinamis material dengan mengukur perubahan sifat mekanik yang dapat bervariasi seiring dengan laju regangan yang diberikan. Split hopkinson bar experimental testing memerlukan gas bertekanan yang tinggi. Sistem keamanan yang tinggi diperlukan untuk mencegah kebocoran karena tekanan operasi yang sangat tinggi. Metode coil electromagnetic launch dapat mengatasi kekurangan pada Split hopkinson bar experimental testing. Coil gun terbagi menjadi 2 jenis, yaitu single stage dan multi-stage. Coil gun jenis multi-stage terdiri dari beberapa koil dan lebih unggul dibandingkan dengan jenis single stage karena kecepatan proyektil dapat diatur secara lebih fleksibel dan kecepatan yang dihasilkan lebih tinggi. Pada penelitian ini diimplementasikan peluncur proyektil dengan metode electromagnetic launcher multi-stage. Penelitian ini bertujuan untuk mengetahui kecepatan proyektil yang mampu dihasilkan dari setiap variasi penelitian. Pada penelitian variabel yang divariasikan adalah jarak antar pole, jumlah pole, jumlah lilitan, dan besar ampere. Simulasi dan desain dilakukan dengan menggunakan Ansys Electronic Maxwell 3D 19R1. Variasi pole dilakukan dengan pole yang berjumlah 1,2, dan 3. Coil divariasikan dengan rentang jumlah 80 - 440 lilitan. Besar ampere divariasikan dengan rentang 5 A - 25 A. Jarak antar pole divariasikan dengan rentang nilai 10 mm – 250 mm. Tujuan pada penelitian ini adalah mendapatkan kecepatan proyektil hingga 2 m/s. Eksperimen dilakukan dengan instalasi peralatan dan bahan yang tersedia di pasaran. Pengujian eksperimen dilakukan dengan jumlah pole 1 dan 2 dengan jarak antar pole 70 mm dengan besar arus 10 A dan 15 A, dan jumlah lilitan 120 dan 157. Kecepatan keluar proyektil paling maksimal pada variasi ini sebesar 13,2 m/s pada jarak keluar pole 104 mm dengan nilai arus 5A, 10 A, dan 15 A. Berdasarkan analisis yang digunakan didapatkan perbandingan error pada simulasi dan eksperimen pada setiap variasi sebesar 22,2% - 25,2% dan 11% - 16,3%
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The Split-Hopkinson Pressure Bar (SHPB) method is a method used to obtain dynamic characteristics of materials by measuring changes in mechanical properties that can vary with the applied strain rate. Split hopkinson bar experimental testing requires high pressure gas. A high safety system is required to prevent leakage due to very high operating pressure. Metode coil electromagnetic launch can overcome deficiencies in Split hopkinson bar experimental testing. Coil guns are divided into 2 types, namely single-stage and multi-stage. The multi-stage coil gun consists of several coils and is superior to the single-stage type because the projectile speed can be adjusted more flexibly, and the resulting speed is higher. In this research, a projectile launcher with a multi-stage electromagnetic launcher method is implemented. This study aims to determine the projectile speed that can be generated from each research variation. In the research, the variables varied were the distance between poles, the number of poles, the number of turns, and the amount of amperage. Simulation and design were carried out using Ansys Electronic Maxwell 3D 19R1. Pole variations are carried out with poles totaling 1, 2, and 3. Coil is varied with a range of 80 - 440 turns. The amount of amperage is varied with a range of 5 A - 25 A. The distance between poles was varied with a value range of 10 mm - 250 mm. The objective of this research is to obtain projectile velocities of up to 2 m/s. Experiments were conducted with the installation of equipment and materials available on the market. Experimental tests were carried out with the number of poles 1 and 2 with a distance between poles of 70 mm with currents of 10 A and 15 A, and the number of turns of 120 and 157. The maximum projectile exit velocity in this variation is 13.2 m/s at a pole exit distance of 104 mm with current values of 5A, 10 A, and 15 A. Based on the analysis used, the comparison of errors in simulations and experiments in each variation is 22.2% - 25.2% and 11% - 16.3%

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Jarak Antar Pole, Besar Arus, Jumlah lilitan, Multi-stage, Kecepatan Inter Pole Distance, Current Size, Number of turns, Multi-stage, Speed
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Yusuf Wahyu Ardana
Date Deposited:	15 Feb 2023 05:55
Last Modified:	15 Feb 2023 05:55
URI:	http://repository.its.ac.id/id/eprint/97441

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