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All Journal JURNAL TEKNIK MESIN Mesin JTT (Jurnal Teknologi Terapan) Jurnal Jaring SainTek Industrial Research Workshop and National Seminar AMMA : Jurnal Pengabdian Masyarakat
Citra Asti Rosalia
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Other

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Design and Fabrication of Ball Punch Deformation Test of Metallic Sheet Material Asti Rosalia, Citra; Wicaksono, Satrio; Dirgantara, Tatacipta; Basuki, Arif; Setya Putra, Ichsan
Mesin Vol 27, No 1 (2018)
Publisher : Mesin

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Abstract

Predicting the behavior of sheet metal in forming process is very important to avoid material failure. The strain limit of sheet metals before tearing occurs is attainable in Forming Limit Diagram (FLD), which can be obtained experimentally or theoretically. Experimentally, FLD of a sheet metal can be achieved by performing ball punch deformation test. Unfortunately, commercially available ball punch deformation test apparatus is still very expensive. In this paper, the design, fabrication and testing process of more affordable ball punch deformation test apparatus is be presented. The ball punch apparatus has indenter?s diameter of 22.4 mm, which capable to tear 0.2-2.0 mm thick specimen blanks with maximum capacity of 200 kN. The test results are then compared with other commercially available ball punch deformation test apparatus results in the literature, and show very good agreement.
OPTIMASI PERBANDINGAN KOEFISIEN GAYA ANGKAT TERHADAP KOEFISIEN GAYA HAMBAT MAKSIMUM PADA PERANCANGAN AIRFOIL MENGGUNAKAN METODE PANEL Citra Asti Rosalia; Ismoyo Haryanto; Eflita Yohana
JURNAL TEKNIK MESIN Vol 2, No 1 (2014): VOLUME 2, NOMOR 1, JANUARI 2014
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.477 KB)

Abstract

Prosedur perancangan airfoil dengan menerapkan metode panel telah disusun. Pada prosedur ini geometri airfoil dibangkitkan menggunakan transformasi Joukowski. Dengan transformasi ini bentuk airfoil dapat diperoleh dengan mentransformasikan bentuk lingkaran dengan koordinat titik pusat tertentu. Adapun analisis karakteristik aerodinamikanya dilakukan dengan menggunakan metode panel dimana aliran dianggap bersifat tak viskos (inviscid) dan tak mampat (incompressible). Pada penelitian ini efek viskositas dikaji dengan menerapkan metode interaksi viskos-tak viskos. Untuk keperluan tersebut analisis lapisan batas (boundary layer) dilakukan untuk mendapatkan tebal perpindahan (displacement thickness). Informasi tebal perpindahan ini selanjutnya digunakan untuk update geometri airfoil. Langkah berikutnya adalah optimasi guna mendapatkan geometri airfoil yang mempunya rasio gaya angkat terhadap gaya hambat maksimum yang paling maksimum dengan koordinat titik pusat lingkaran sebagai variabel perancangan. Sebagai pengoptimum (optimizer) digunakan optimasi based gradient methods (fmincon) dan Algoritma Genetika (GA) Dari kedua metode tersebut akan dibandingkan hasilnya pada bilangan Reynold tertentu. Dari hasil yang diperoleh menunjukkan bahwa analisis karakteristik aerodinamika menggunakan metode panel dengan melibatkan interaksi viskos-tak viskos memberikan hasil yang cukup akurat terhadap hasil eksperimen. Sekalipun secara umum hasil optimasi yang diperoleh juga cukup baik akan tetapi memerlukan validasi dan variasi lebih lanjut.
Design and Fabrication of Ball Punch Deformation Test of Metallic Sheet Material Citra Asti Rosalia; Satrio Wicaksono; Tatacipta Dirgantara; Arif Basuki; Ichsan Setya Putra
Mesin Vol. 27 No. 1 (2018)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Predicting the behavior of sheet metal in forming process is very important to avoid material failure. The strain limit of sheet metals before tearing occurs is attainable in Forming Limit Diagram (FLD), which can be obtained experimentally or theoretically. Experimentally, FLD of a sheet metal can be achieved by performing ball punch deformation test. Unfortunately, commercially available ball punch deformation test apparatus is still very expensive. In this paper, the design, fabrication and testing process of more affordable ball punch deformation test apparatus is be presented. The ball punch apparatus has indenter's diameter of 22.4 mm, which capable to tear 0.2-2.0 mm thick specimen blanks with maximum capacity of 200 kN. The test results are then compared with other commercially available ball punch deformation test apparatus results in the literature, and show very good agreement.
Perancangan dan Proses Manufaktur Industrial Safety Helmet Bahan Komposit GFRP Sigit Bayu Wiguna; Muhammad Naufal Fadhil; Adi Kurnia Muktabar; Abian Nurrohmad; Citra Asti Rosalia
Prosiding Industrial Research Workshop and National Seminar Vol 15 No 1 (2024): Prosiding 15th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v15i1.6253

Abstract

Kapasitas penyerapan energi industrial safety helmet sangat dipengaruhi oleh bahan yang digunakan dalam pembuatan helm. Pada umumnya industrial safety helmet terbuat dari High-Density Polyethylene (HDPE) dan Polycarbonate. Penggunaan material komposit masih jarang digunakan pada proses pembuatan industrial safety helmet. Material komposit memiliki sifat yang unggul seperti ringan, kekuatan dan kekakuan yang cukup tinggi. Dengan keunggulan sifat yang dimiliki oleh komposit, sehingga pada penelitian ini dikembangkan industrial safety helmet yang terbuat dari komposit Glass Fiber Reinforced Polymer (GFRP). Penelitian yang dilakukan berfokus pada perancangan dan proses manufaktur industrial safety helmet komposit GFRP. Pertama proses perancangan industrial safety helmet dikembangkan dengan menyusun DR&O (Design Requirement & Objective). Proses selanjutnya adalah proses manufaktur industrial safety helmet dengan material komposit GFRP 3 lapis dengan metode pembuatan hand lay-up. Hasil penelitian didapatkan bahwa industrial safety helmet dengan bahan komposit GFRP berhasil dikembangkan dan memiliki keunggulan lebih ringan dibandingkan dengan Industrial safety helmet standard SNI.
Linear and Nonlinear Simulation for Quadrotor Dynamics Encompassing Induced Disturbance Rizki Zuhri, Muhammad; Sidqi Islami, Zaim; Asti Rosalia, Citra
Jurnal Jaring SainTek Vol. 6 No. 1 (2024): April 2024
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/mtj88e71

Abstract

Quadrotor is a rotorcraft that has four rotors, usually symmetrical and arranged in some specific configuration, i.e. ‘plus’ and ‘cross’ configuration. To test a new control system for quadrotor, it is necessary to put it on board first and have a flight test. However, controlling a quadrotor is a hard task, hence the risk of crash is high. This risk can be reduced by creating a simulation model that represents the dynamics of quadrotor accurately. This paper aims to provide the simulation model of a quadrotor. To increase accuracy of this model, the disturbance induced by the motion of the quadrotor were also taken int account. The simulation was built in Simulink based on the kinematics and dynamics equation of quadrotor both in linear and nonlinear simulation. In most cases, the attitude response (roll, pitch, and yaw) for both simulations were nearly the same. The most notable difference was for the elevation response in which the linear simulation tended to be unable to capture the deviation, while the nonlinear simulation was able to.
RANCANG BANGUN ALAT KHUSUS UNTUK MEMBUKA NUT YANG TERKOROSI Rosalia, Citra Asti; Budiansyah, Irfan; Putri, Khaerani Tiara; Muktabar, Adi Kurnia; Luthfi, Moch.
Jurnal Teknologi Terapan Vol 11, No 1 (2025): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v11i1.680

Abstract

Aircraft are highly complex transportation modes, assembled from various components to ensure optimal safety and reliability. One of the small yet essential components frequently used in aircraft is the nut, which generally exhibits corrosion resistance due to its stainless steel 304 material. However, corrosion can still occur, particularly in areas such as the galley, landing gear, lavatory, and engine construction. This study aims to develop a specialized tool to facilitate aircraft maintenance by effectively removing corroded nuts. The tool was designed using CAD SolidWorks and manufactured through turning, grinding, milling, and welding processes. It operates by clamping the nut and applying impact force until the nut breaks, utilizing a sharp blade to destroy the nut without damaging surrounding aircraft components. Torque testing was conducted to measure the rotational force capacity for various nut sizes. The test results demonstrate that the developed tool can efficiently, safely, and effectively remove corroded nuts, thereby simplifying aircraft maintenance and reducing the risk of damage to other components.
RANCANG BANGUN ALAT UKUR GAYA DORONG DAN MOMEN UNTUK PROPELER UAV KECIL: KAJIAN SUBSISTEM Wibowo, Singgih Satrio; Luthfi, Mochammad; Rosalia, Citra Asti
Jurnal Teknologi Terapan Vol 11, No 1 (2025): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v11i1.712

Abstract

Thrust and Moment Meter (TMM) is an instrument for measuring thrust and moment or torque produced by a small electric propulsion system, which is usually used on Unmanned Aerial Vehicles (UAV) and/or small size Radio Control (RC) aircraft. This tool is designed with low-cost materials and simple process, namely Acrylonitrile Butadiene Styrene (ABS) plastic using 3D printing technology. The main component of this device is an Arduino Nano microcontroller, equipped with three Load Cell sensors and one LCD screen. The results of this research are that the TMM tool has been successfully created and tested for accuracy in several cases, and very good results were obtained where the force measurement accuracy was more than 99% (error < 1%).
Mewujudkan Pemberdayaan Masyarakat Melalui Pelatihan Perawatan Pesawat Udara Khususnya Mesin Turbin Gas Bagi Guru-Guru SMKN 12 Bandung Iryani, Lenny; Fransisca Soetanto, Maria; Hidayat, Syarif; Luthfi, Mochammad; Hartono, Budi; Suradi Kartanegara, Radi; Wibowo, Teguh; Sinung Nugroho, Yohanes; Rizki Zuhri, Muhammad; Asti Rosalia, Citra; Sidqi Islami, Zaim
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 5 : Juni (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

This program is aimed for teachers from SMK N 12 Bandung. Through this PKM (Community Service Program), it is expected that the training participants will gain insights and enhanced knowledge regarding aircraft maintenance, particularly the maintenance of gas turbine engines. The training was conducted at the Propulsion Laboratory, Aeronautical Engineering Hangar, Department of Mechanical Engineering, from October 12 to 16, 2021. The aircraft engine maintenance training began with a pre-test to assess participants' initial knowledge of aircraft engine maintenance. At the end of the training, a post-test was conducted to measure the improvement in their understanding and knowledge. The outcome of this PKM activity is a certificate of participation in the aircraft maintenance training, specifically focused on gas turbine engines.
Co-Authors AA Sudharmawan, AA Abian Nurrohmad Adi Kurnia Muktabar Adi Kurnia Muktabar Budi Hartono Budiansyah, Irfan Cakranegara, Pandu Adi Eflita Yohana Fransisca Soetanto, Maria Ichsan Setya Putra Iryani, Lenny Ismoyo Haryanto Luthfi, Moch. Luthfi, Mochammad Muhammad Naufal Fadhil Putri, Khaerani Tiara Satrio Wicaksono Satrio Wicaksono Setya Putra, Ichsan Sidqi Islami, Zaim Sigit Bayu Wiguna Sinung Nugroho, Yohanes Suradi Kartanegara, Radi Syarif Hidayat Tatacipta Dirgantara, Tatacipta Teguh Wibowo Wibowo, Singgih Satrio Zuhri, Muhammad Rizki