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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Machine : Jurnal Teknik Mesin Creative Research Journal Jurnal Rekayasa Hijau Jurnal Rekayasa Energi dan Mekanika METAL : Jurnal Sistem Mekanik dan Termal
Anggraeni, Nuha Desi
Institut Teknologi Nasional Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Karakterisasi Mekanik Komposit Matriks Polipropilena High Impact Dengan Serat Alam Acak Dengan Metode Hand Lay Up Untuk Komponen Automotive Alfan Ekajati Latief; Nuha Desi Anggraeni; Dedy Hernady
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 3, No 3 (2019)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v3i3.3434

Abstract

ABSTRAK Serat alam yang berfungsi sebagai penguat memiliki sifat yang lebih ringan, mudah dibentuk, tahan korosi, harga murah dan memiliki kekuatan yang sama dengan material logam. Serat bahan alami yang memiliki kekuatan tarik, tekan dan impak yang baik diantaranya serat rami dan daun nanas. Untuk matriks Polipropilena high impact (PPHI) yang banyak digunakan dalam industri otomotif.. Pada penelitian ini dipelajari pengaruh fraksi volume serat alami terhadap sifat mekanik komposit PPHI berpenguat serat alami. Komposit PPHI dibuat dengan menggunakan metode Hand Lay Up pada temperatur 2500C dengan fraksi volume serat alami sebesar 10%, dimana serat dibuat digunting halus hingga memiliki ukuran mesh 120/170, 170/200 dan dibawah 200 mesh, Kekuatan tarik komposit diukur dengan mengacu pada standar ASTM 3039, kekuatan tekan diukur mengacu pada ASTM D 695. Harga Impak dari komposit diukur dengan mengacu pada ASTM D 6110-04. Pada penelitian ini dapat disimpulkan, fraksi volume 10 % serat alami yang baik ketika dicampur dengan matriks polipropilena high impact adalah serat nanas dengan meshing 170/200 dapat meningkatkan kekuatan tarik PPHI sebesar 40 % dan meningkatkan harga impak PPHI sebesar 50,8 % jika dilihat penelitan sebelumnya yakni menggunakan serat rami dibawah mesh 1200 dengan matriks PPHI. Kata Kunci: Rami, Daun Nanas, Polipropilena High Impact, Hand Lay Up. ABSTRACT Natural fibers that function as reinforcement have lighter properties, are easily formed, are corrosion resistant, are cheap and have the same strength as metal materials. Natural fiber which has good tensile, compressive and impact strength including Ramie and pineapple leaves. For high impact polypropylene matrix (PPHI) which is widely used in the automotive industry. In this study the effect of volume fraction of natural fibers on the mechanical properties of PPHI composites with natural fiber reinforced properties was studied. PPHI composites are made using the Hand Lay Up method at a temperature of 2500C with a volume fraction of natural fibers of 10%, where fibers are made finely shaved to have a mesh size of 120/170, 170/200 and below 200 mesh, the tensile strength of the composite is measured by reference to the standard ASTM 3039, compressive strength measured refers to ASTM D 695. The impact price of the composite is measured with reference to ASTM D 6110-04. In this study it can be concluded, a good volume fraction of 10% natural fiber when mixed with high impact polypropylene matrix is pineapple fiber with meshing 170/200 can increase the tensile strength of PPHI by 40% and increase the impact price of PPHI by 50.8% if seen by research previously that used hemp fiber under mesh 1200 with PPHI matrix. Keywords: Ramie Pineapple, High Impact Polypropylene, Hand Lay Up.
Rancang Bangun Mesin Pencacah Plastik Tipe Gunting Nuha Desi Anggraeni; Alfan Ekajati Latief
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 2, No 2 (2018)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v2i2.2397

Abstract

ABSTRAKJumlah sampah plastik yang dibuang kelaut oleh Indonesia jumlahnya mendekati 200 juta ton. Jumlah ini berada di bawah Tiongkok yang menghasilkan sampah plastik mencapai 262,9 juta ton. Pada saat yang sama, kebutuhan akan plastik di Indonesia baru terpenuhi sekitar 64% dari total 5 juta ton plastik. Sampah plastik yang dibuang kelaut, seharusnya dapat dimanfaatkan untuk memenuhi kebutuhan tersebut. Sampah plastik yang telah ada, perlu diolah agar dapat dimanfaatkan kembali sebagai plastik produksi. Pengolahan sampah plastik yang paling sederhana adalah dengan mencacah plastik yang telah ada menjadi serpihan-serpihan kecil menggunakan mesin pencacah. Mesin pencacah dapat digunakan dimanapun karena menggunakan mesin diesel sebagai penggeraknya. Mekanisme pencacahan yang digunakan menggunakan tipe gunting. Hasil perancangan mesin pencacah menggunakan 5 mata pisau dengan spesifikasi, panjang 180 mm, lebar 50 mm, tebal 10 mm dan sudut mata pisau 35° dengan panjang poros penggerak 450 mm, diameter 30 mm.Kata kunci:plastik, mesin, daur ulang.ABSTRACTThe amount of plastic waste discharged into the sea by Indonesia is approximately 200 million tons. This amount is below China which produces plastic waste reaches 262.9 million tons. At the same time, the need for plastics in Indonesia is only fulfilled about 64% of the total 5 million tons of plastic. Plastic waste discharged into the sea, should be utilized to meet these needs. Plastic waste that has been there, needs to be processed in order to be reused as a production plastic. The simplest plastic waste processing is to chop the already existing plastic into small pieces. This chopper machine can be used anywhere because it uses a diesel engine as its propulsion. The enumeration mechanism used with scissor type. The design of the enumerator machine uses 5 blades with specifications, length of 180 mm, width 50 mm, 10 mm thick and 35 ° knife angle with 450 mm drive length, 30 mm diameter.Keyword: plastic, machine, recycle
Optimasi Dimensi Connecting Rod Al2024 dan Tulangan Baja 4340 pada Kawasaki Ninja 150 R Menggunakan ANSYS Alfan Ekajati Latief; Nuha Desi Anggraeni
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 3, No 1 (2019)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v3i1.2867

Abstract

ABSTRAKConnecting rod berfungsi menghubungkan piston ke crankshaft, sistem ini membentuk mekanisme sederhana yang mengubah gerak lurus menjadi gerak melingkar ataupun sebaliknya. Umumnya connecting rod dirancang berbenruk I agar kuat dan ringan dengan material baja. Pengurangan massa pada connecting rod dapat mengurangi momen inersia engine, meningkatkan performa dan fuel efficiency engine. Penelitian ini bertujuan untuk mendapatkan dimensi optimum connecting road menggunakan material Al 2024 dan tulangan baja 4340.Dimensi optimum harus dapat menahan tegangan dan regangan maksimum yang terjadi pada connecting rod ketika menerima beban tekan dan tarik. Penelitian dilakukan dengan melakukan varisi dimensi profil I dan bentuk tulangan dengan dimensi lain menyesuaikan spesifikasi connecting rod Kawasaki Ninja 150 R. Hasil penelitian memperlihatkan bahwa connecting rod dengan profil I, bentuk tulangan webbing merupakan tulangan paling optimal dengan ketebalan 8 mm dengan berat total 0,12 Kg.Kata kunci: connecting rod, tulangan baja, Al2024, ANSYSABSTRACTThe connecting rod serves to connect the piston to the crankshaft; this system forms a simple mechanism that converts straight motion into circular motion or vice versa. Generally, connecting rods are designed to be made in order to be strong and lightweight with steel material. Reducing the mass of the connecting rod can reduce the moment of engine inertia, improve the performance and fuel efficiency engine. This study aims to obtain the optimum dimensions of the connecting road using Al 2024 material and steel reinforcement 4340. The optimum dimension must be able to withstand the maximum stress and strain that occurs in the connecting rod when receiving compressive and tensile loads. The study was conducted by varying the dimensions of profile I and shape of reinforcement with other dimensions adjusting the specifications of the connecting rod Kawasaki Ninja 150 R. The results showed that the connecting rod with profile I, the form of webbing reinforcement was the most optimal reinforcement with a thickness of 8 mm and total mass 0,12 kg.Keywords: connecting rod, reinforcement steel, Al2024, ANSYS.
Design and Manufacture Indirect Method Grain Bed Dryer with 10 Kg Capacity Fueled by Wasted Oil Rizki Cakrawiguna; Noviyanti Nughraha; Nuha Desi Anggraeni
METAL: Jurnal Sistem Mekanik dan Termal Vol 6, No 2 (2022): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.6.2.89-94.2022

Abstract

Artificial grain dryers use additional heat to dry the grain, the energy source for this machine is fuel, gas, husks, and firewood. The dryer used in this study uses wasted oil with the indirect method. This grain dryer with wasted oil helps us make the environment stay clean. The purpose of this research is to design and manufacture a bed dryer type grain dryer with a capacity of 10 kg fueled by wasted oil, with the target of drying grain to a moisture content of 13-14%, dry grain is odorless, the drying cost is relatively cheap because it uses used lubricating oil. The machine is made by the selected design. Including bed dryer, plenum chamber, hot air duct, heater box, stove, oil reservoir, and oil line. The results of the design and manufacture obtained bed dryer dimensions and plenum space 120x50x100cm, a cylindrical stove with a diameter of 20cm and a height of 20cm which is connected by a channel to an oil reservoir with a maximum capacity of 30 liters. This tool succeeded in drying grain from 30% and 38% to 13% moisture. Heating uses indirect or indirect methods so that the air that heats the grain does not contain oil. The heated grain is clean and does not smell of oil
Mold Strength Analysis of Press Machine Composite Brake Using FEM Method on Train Brakes Andhika Muhammad Kasyafa; Muhamad Juan Raffindo; Nuha Desi Anggraeni
METAL: Jurnal Sistem Mekanik dan Termal Vol 6, No 2 (2022): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.6.2.126-131.2022

Abstract

Press machine is a mechanism that works by compressing objects. It is powered by hydraulic machines, electric motors, or human power. Usually in the railway industry, presses are used in the manufacture of composite brake pads for railways. This study was conducted to find out how strong the mold of the composite brake press machine is if given the maximum load by hydraulics, this study also analyzes the mold of the press machine which plays an important role in the manufacture of composite brake linings using the Finite Element Methods (FEM). Therefore, the mold of the press must have sturdy characteristics and can withstand a lot of loads so that the structure will not deform while the process is in progress. The conclusion is that the maximum voltage amount in the mold is 33,596,928 N/m2 (using ASTM A36 as the reference material) which does not cause major deformation of the mold and is still considered safe.
PERANCANGAN CETAKAN INJECTION MOLDING HANDPRESS MATERIAL KOMPOSIT PPHI DAN SERAT ALAM Alfan Ekajati Latief; Nuha Desi Anggraeni; Ichsan Putera
Machine : Jurnal Teknik Mesin Vol 8 No 2 (2022): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v8i2.2554

Abstract

Injection molding is a method of forming a thermoplastic that is heated until it melts and then injected with high pressure into the mold so that the thermoplastic material will harden in the mold. The type of injection molding used is the hand press type with a pressure capacity of 34.83 MPa and a barrel capacity of 273 cm3. The mold that will be designed is to make a tensile test specimen ASTM 3039, an Impact test specimen ASTM D 6110-04, and a bending test specimen ASTM D 695. Determination of the specimen pointing to the type of material used is a composite with a high impact polypropylene matrix (PPHI) and natural fibers of Ramie and pineapple leaves. The mold design will initially make 2 mold designs based on the flow of material entering the mold, with the material being tested is 100% PPHI. After getting the optimal one, the composite will test the optimal mold with different types of PPHI composite material and 10% different volume fractions of natural fiber. Namely, pineapple and Ramie fibers with the parameters used as references are fill of time, Pressure at end fill, and Temperature at end fill. In this study, it can be concluded that of the three specimens above, the pineapple leaf fiber has high pressure and temperature at the end fill compared to Ramie fiber.Abstrak ditulis dalam Bahasa Inggris, satu paragraf, memuat tujuan, metode penelitian yang digunakan dan hasil.
Static Analysis of Tubular Space Frame Chassis of an Electric Racing Car Made of ASTM A106 Grade B Encu Saefudin; Nuha Desi Anggraeni; Marsono Marsono; Syauqi Azhari
METAL: Jurnal Sistem Mekanik dan Termal Vol 7, No 1 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.1.15-22.2023

Abstract

The chassis is a vital component in electric vehicles, which can keep the car rigid and robust to support the load on it. In this research, the chassis is designed for electric vehicles with sufficient strength and rigidity, as well as light in weight and safety according to KMLI regulations, to be used in student racing competitions. The design process is begun with chassis space frame determination and weight and position definition of all components to be installed on the chassis. Then calculate the centre of gravity and the reaction force at the mounting supports on each wheel. The chassis design has a length of 2300mm, a width of 1100mm and a height of 1100 mm. This chassis is made using ASTM A106 Grade B steel pipe with a diameter of 1 inch, and the total weight is 76.5 kg. The analysis was carried out statically using Solidwork. The static study showed maximum stress of 22.06 MPa, a maximum deflection of 0.346 mm, and a minimum safety factor of 10.9. All the parameters show promising results, strength, stiffness, and safety in compliance with KMLI regulations
RANCANG BANGUN KOMPOSTER RUMAH TANGGA KOMUNAL SEBAGAI SOLUSI PENGOLAHAN SAMPAH MANDIRI KELURAHAN PASIRJATI BANDUNG Nugraha, Noviyanti; Anggraeni, Nuha Desi; Ridwan, Muhammad; Fauzi, Odi; Yusuf, David
CREATIVE RESEARCH JOURNAL Vol 3 No 02 (2017): Creative Research Journal
Publisher : Badan Penelitian dan Pengembangan Daerah Provinsi Jawa Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34147/crj.v3i02.109

Abstract

Sampah organik dapat menimbulkan pencemaran terhadap lingkungan serta sumber penyakit. Salah satu upaya pengolahan sampah organik yaitu dengan cara mengolahnya menjadi pupuk kompos. Tujuan dari penelitian ini adalah merealisasikan pengolahan sampah rumah tangga mandiri sebagai solusi dari permasalah masyarakat Kelurahan Pasirjati Bandung melalui perancangan dan pembuatan komposter sampah rumah tangga komunal. Tipe komposter yang dirancang adalah tipe horizontal dengan pengadukan. Agitator atau pengaduk yang digunakan menggunakan dua jenis agitator yaitu agitator horizontal dan agitator sudut 30o Sistem pengoprasiannya dengan memanfaatkan gaya dari tangan atau dengan menggunakan tenaga dari motor listrik. Dari hasil hasil perancangan diperoleh spesifikasi mesin dengan kapasitas komposter sebesar 40 kg, kapasitas drum 200 liter, transmisi yang digunakan roda gigi dan tranmisi sabuk serta memiliki daya motor sebesar 0,5 HP atau dengan gaya tangan sebesar 14,7 kg untuk menjalankan mesin tersebut.
Design of IoT-based Greenhouse Temperature and Humidity Monitoring System HARTAWAN, LIMAN; RAKHMAT, GALIH ASHARI; NUGRAHA, NOVIYANTI; ANGGRAENI, NUHA DESI; MAULANA, KEINDRA BAGAS; RIDJALI, M. RANGGA; IQBAL, M.; MAHARDHIKA, M. KEVIN; ALAM, BRAMANTIO SYAHRUL; FANI, JUNIOR AL; AMARULLAH, LUTHFY FAHLEVI; ALFADHLIH, M. ILYAS; SBASTIO, M. RAVLI; PURBA, ADRICO ALEXANDER
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 4: Published October 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i4.1051

Abstract

ABSTRAKPenelitian ini bertujuan mengembangkan sistem pemantauan temperatur dan kelembaban udara di Smart Greenhouse Lembang Agri. Sistem ini terdiri dari beberapa perangkat yang saling terhubung untuk mengukur temperatur dan kelembapan secara nirkabel. Data pengukuran dikumpulkan lalu dikirim ke internet. Setiap perangkat memiliki sumber daya mandiri yang berasal dari baterai dan dapat dihubungkan ke sistem panel surya. Penelitian ini menggunakan mikrokontroller WEMOS D1 Mini dan memanfaatkan protokol ESP-NOW untuk transmisi data nirkabel. Sensor yang digunakan adalah DHT21 dengan performa lebih unggul dibandingkan sensor DHT11 atau DHT22. Tampilan website menggunakan PHP untuk menerima, memvalidasi, dan menyimpan data di Firebase Real-time Database. Website dilengkapi fitur agar pengguna dapat mengakses data real-time dan historis untuk setiap perangkat.Kata kunci: smart farming, ESP-NOW, ESP8266, gateway, panel surya, portabel ABSTRACTThis study aimed to develop a monitoring system for air temperature and humidity in the Lembang Agri Smart Greenhouse. This system consists of multiple interconnected devices that can wirelessly measure temperature and humidity. Measurement data is collected and then sent to the internet. Each device has an independent power source derived from the battery and can connect to a photovoltaic system. This study uses the WEMOS D1 Mini microcontroller and enabling wireless data transmission through the ESP-NOW protocol. The sensor employed in this study is the DHT21, known for its superior performance compared to the DHT11 or DHT22 sensors. The website dashboard utilises PHP to receive, validate, and store the data in the Firebase Real-time Database. The Website features allow users to access real-time and historical data for each device.Keywords: smart farming, ESP-NOW, ESP8266, gateway, Photo Voltaic, portable
Co-Authors Ahmad Dzilfairuz Zaidan ALAM, BRAMANTIO SYAHRUL ALFADHLIH, M. ILYAS Alfan Ekajati Latief Alfan Ekajati Latief Alvin Rhamdani AMARULLAH, LUTHFY FAHLEVI Andhika Muhammad Kasyafa Dedy Hernady Donny Firli Ardiawan Encu Saefudin Fajar Ahmad Faisal FANI, JUNIOR AL Fauzi, Odi Gilang Gerry Garnida Hartawan, Liman Hernady, Dedy Ichsan Putera Latief, Alfan Ekajati Latief, Alfan Ekajati Lutfi Darusman M. Iqbal MAHARDHIKA, M. KEVIN Marsono Marsono MAULANA, KEINDRA BAGAS Muhamad Juan Raffindo Muhammad Ridwan Noviyanti Nughraha nugraha, noviyanti PURBA, ADRICO ALEXANDER Rakhmat, Galih Ashari RIDJALI, M. RANGGA Rizki Cakrawiguna Robby Rinaldi Sandi Rudy Yuni Widiatmoko Ruslan, Budiana SBASTIO, M. RAVLI Syahrul Ariq Ismail Syauqi Azhari Wibowo Pria Fahla Wildhan Rhamdani Yusuf, David