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All Journal Machine : Jurnal Teknik Mesin 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 Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Rancang Bangun Mesin Pencacah Plastik Tipe Gunting Anggraeni, Nuha Desi; Latief, Alfan Ekajati
Jurnal Rekayasa Hijau Vol 2, No 2 (2018)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Institut Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (260.569 KB) | 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 Latief, Alfan Ekajati; Anggraeni, Nuha Desi
Jurnal Rekayasa Hijau Vol 3, No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Institut Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1212.382 KB) | 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.
KARAKTERISASI MEKANIK KOMPOSIT MATRIKS POLIPROPILENA HIGH IMPACT DENGAN SERAT ALAM ACAK DENGAN METODE HAND LAY UP UNTUK KOMPONEN AUTOMOTIVE Latief, Alfan Ekajati; Anggraeni, Nuha Desi; Hernady, Dedy
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 3, No 3 (2019)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Institut Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.63 KB) | 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.
Modifikasi Mesin Pencacah Plastik PET Tipe Gunting dengan Kapasitas 50 kg/jam Nuha Desi Anggraeni; Alfan Ekajati Latief; Alvin Rhamdani; Robby Rinaldi Sandi
Jurnal Rekayasa Energi dan Mekanika Vol 1, No 2 (2021): JREM
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/JREM.v1i2.72

Abstract

Abstrak Mesin pencacah plastik merupakan sebuah mesin yang dirancang untuk mencacah sampah plastik agar mengurangi volume sampah. Mesin pencacah dirancang mampu mencacah sampah dengan kapasitas pencacahan 50 kg/jam, hasil analisa kinerja mesin pencacah memperlihatkan bahwa kapasitas mesin pencacah adalah 36.68 kg. Analisis kinerja mesin lain adalah: efisiensi mesin nilainya 73,37 %; tingkat kebisingan mencapai 80,6 dB; getaran yang dihasilkan saat melakukan pencacahan adalah 4,9 mm/s2, dan rendemen cacahan 73,45 %. Hasil analisa kinerja memperlihatkan bawah mesin pencacah perlu dimodifikasi agar sesuai dengan hasil perancangan awal. Modifikasi dilakukan dengan mengubah saringan, mengatur ulang jarak antara mata pisau, dan menambahkan pisau pada pisau putar. Modifikasi yang dilakukan berhasil meningkatkan kapasitas mesin pencacah menjadi 42,59 kg/jam; tingkat kebisingan menjadi 76,8 dB; tingkat getaran mesin 3,84 mm/s2; dan kualitas hasil cacahan menjadi baik yaitu plastik terpotong. Kata kunci: modifikasi, kinerja, sampah, daur ulang, mata pisau Abstract The plastic chopping machine is a machine designed to chop plastic waste in order to reduce the volume of waste. The chopping machine is designed to be able to chop waste with a chopping capacity of 50 kg / hour, the results of the chopping machine performance analysis show that the chopping machine capacity is 36.68 kg. Other engine performance analyzes are: the engine efficiency is 73.37%; noise level reaches 80.6 dB; The vibration generated during the counting was 4.9 mm / s2, and the chopping yield was 73.45%. The results of the performance analysis show that the chopping machine needs to be modified to match the results of the initial design. Modifications were made by changing the filter, resetting the distance between the blades, and adding blades to the rotary knife. The modifications made were successful in increasing the capacity of the chopping machine to 42.59 kg / hour; noise level to 76.8 dB; machine vibration level 3.84 mm / s2; and the quality of the chopped results is good, namely the plastic is cut. Key words: modification, performance, waste, recycling, blade
ANALISA KINERJA MESIN PENCACAH BOTOL PLASTIK TIPE PET Nuha Desi Anggraeni
Machine : Jurnal Teknik Mesin Vol 5 No 2 (2019): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.721 KB) | DOI: 10.33019/jm.v5i2.1068

Abstract

Plastic waste production in 2015 reached 146 tons per year. This amount is the highest amount of waste compared to other solid waste sectors. The most plastic waste is packaging plastic waste which is often used to package food and beverages. Because of the amount of waste, plastic waste needs to be processed so that it can be reused into other objects. One of the uses of plastic waste is by carrying out plastic counting to be used again. In a previous study, a scissor-type plastic crusher machine was built with a capacity of 50 kg / hour with a diesel engine. The plastic chopper machine needs to be tested for performance to determine the suitability of the results of realization with the initial design. Engine performance tested and analyzed were engine capacity, noise level, crushing efficiency, and machine vibration and crushing quality. The test results show the actual capacity of the engine is 36.68 kg / hour; the efficiency of the crushing results is 73.37%, the noise level when carrying out the crushing is 80.6 dB, the vibration generated when carrying out the crushing is 4.9 mm / s2, and the yield 73.45% crushing.
MODIFIKASI PISAU MESIN PENEPUNG ATC DENGAN GARIS MATA POTONG PADA SUDUT 33O ARAH RADIAL Nuha Desi Anggraeni
Machine : Jurnal Teknik Mesin Vol 6 No 2 (2020): 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.v6i2.1623

Abstract

Kappa carrageenan is a hydrocolloid compound which is extracted from the red seaweed species of Eucheuma Cottonii. Kappa Carrageenan is widely used in the food processing industry as a thickener, stabilizer and emulsifier. ATC (Alkali Treated Cottonii) which is the intermediate product to obtain SRC (Semi-Refined Carrageenan) will go through further processing, such as chopping and grinding. This research is a continuation of the research undertaken to develop ATC grinding machines. This research is focused on modifying the geometry of grinding tools to obtain finer powder results than former research. The tests that have been performed show that the modifications of tool geometry provide better results, which is able to achieve fine powder up to 100 mesh. But the capacity of this grinding machine is not quite satisfactory because the amount of flour reaches 100 mesh is only 9 grams from 50 grams input.
Proses Pembuatan Mesin Injection Molding Hand-Press untuk Plastik Komposit Alfan Ekajati Latief; Nuha Desi Anggraeni; Wildhan Rhamdani
METAL: Jurnal Sistem Mekanik dan Termal Vol 4, No 2 (2020): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1217.259 KB) | DOI: 10.25077/metal.4.2.94-98.2020

Abstract

Injection molding is a method of forming thermoplastic material that is melted due to heating. The heating result is then injected by the nozzle into the mold until the thermoplastic material hardens. Plastic processing using injection molding is used to produce strong thermoplastic material quickly. The manufacture of injection molding machine hand-press is expected to help the process of plastic processing that demands material engineering and manufacturing technology. Research in the process of making injection molding machine hand-press aims to determine the manufacturing process time and temperature when the operation of injection molding hand-press. The process of making injection molding hand-press shows that the required time is 612 minutes, while in theory the time is 565.3 minutes. The operating temperature is (230-260) °C, with an optimum temperature of 250 °C.
Perancangan Cetakan Injection Molding Hand Press Untuk Produk Slide Piece CVT Menggunakan FEM Alfan Ekajati Latief; Lutfi Darusman; Wibowo Pria Fahla; Ahmad Dzilfairuz Zaidan; Nuha Desi Anggraeni
METAL: Jurnal Sistem Mekanik dan Termal Vol 5, No 2 (2021): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1292.985 KB) | DOI: 10.25077/metal.5.2.105-113.2021

Abstract

The development of composite materials in the automotive industry has reached the stage of utilizing natural fibers to pursue relatively low material prices with the same quality. One method for product formation is injection molding. This study aims to design the most efficient mold from a variety of shapes, dimensions, and runner types used with the help of SolidWorks software. The tool used to support the design of the mold is a low-pressure injection molding hand press with a barrel temperature specification of 200 C - 250 C, barrel volume of 270 cm3, and an out-of-nozzle diameter of 8 mm. The most efficient design is determined from three multi-cavity models with different shapes. This research produces a two-plate mold with multi-cavity modeling which has a low-pressure parameter of 1.89 MPa and the shrinkage factor is still within the standard range of PPHI material (< 1%).
Perancangan dan Perencanaan Mesin Pemipih Emping Jagung Skala Industri Gilang Gerry Garnida; Rudy Yuni Widiatmoko; Syahrul Ariq Ismail; Donny Firli Ardiawan; Nuha Desi Anggraeni; Budiana Ruslan
METAL: Jurnal Sistem Mekanik dan Termal Vol 4, No 2 (2020): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1324.946 KB) | DOI: 10.25077/metal.4.2.82-86.2020

Abstract

UKM XYZ is a corn chips processing business that still uses the traditional method which requires a lot of time and effort. From this problem, the idea emerged to design a corn chip flattening machine which aims to speed up production time and reduce the energy spent processing corn chips. The research stage consisted of the problem identification stage, the goal-setting stage, the drafting stage, and the planning stage. The EOQ Economic Order Quantity method is used to determine the forecast for raw material requirements, the forecasting result is 11.7408 kg. The corn sheller machine is designed to have a capacity of 80 kg/hour, using a 120-watt electric motor, which is connected using a pulley and a belt to 2 axles with a diameter of 30 mm with a length of 620 mm and 570 mm in order to meet the needs of UKM XYZ. On the shaft, a gear is attached to cause rotation of the 2 axles in opposite directions. The piping uses 2 rollers with a diameter of 100 mm and a length of 400 mm. Component materials that have contact with corn use AISI 304 material because this material has high tensile strength and is categorized as a standard material for processing food.
Kaji Eksperimental Sifat Mekanik Honeycomb Sandwich Komposit Serat Karbon dengan Uji Bending Marsono Marsono; Nuha Desi Anggraeni; Fajar Ahmad Faisal
METAL: Jurnal Sistem Mekanik dan Termal Vol 5, No 2 (2021): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (943.759 KB) | DOI: 10.25077/metal.5.2.114-125.2021

Abstract

A higher energy efficiency in a high efficient energy car can be reached by using a honeycomb sandwich structure that is made from fiber-carbon composite which is lighter in weight. With a lighter weight, a higher power-to-weight ratio can be reached.  In this research, honeycomb sandwich panels are made from fiber-carbon composite and tested to determine their flexural strength and stiffness. These honeycomb sandwich panels are made with varying thickness of core cell wall, which are made by 1 layer and 2 layers of fiber-carbon sheet. Matrix that is used is epoxy resin that is prepared in two methods, with and without heating. The bending test result shows that the highest flexural strength that can be reached is 5.193 kgf/mm2 which is reached by the specimen that has 2 layers’ fiber carbon with heating epoxy resin. Flexural stiffness is also reached by the same specimen, of 67.49 kgf/mm.
Co-Authors Ahmad Dzilfairuz Zaidan Alfan Ekajati Latief Alfan Ekajati Latief Alvin Rhamdani Andhika Muhammad Kasyafa Dedy Hernady Donny Firli Ardiawan Encu Saefudin Fajar Ahmad Faisal Gilang Gerry Garnida Hernady, Dedy Ichsan Putera Latief, Alfan Ekajati Latief, Alfan Ekajati Lutfi Darusman Marsono Marsono Muhamad Juan Raffindo Noviyanti Nughraha Rizki Cakrawiguna Robby Rinaldi Sandi Rudy Yuni Widiatmoko Ruslan, Budiana Syahrul Ariq Ismail Syauqi Azhari Wibowo Pria Fahla Wildhan Rhamdani