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Jurnal Energi dan Teknologi Manufaktur
Published by Politeknik Negeri Malang
ISSN : 26208741     EISSN : 26207362     DOI : 10.33795/ath
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Energi dan Teknologi Manufaktur adalah jurnal bidang Teknik Mesin yang diterbitkan oleh Jurusan Teknik Mesin, Politeknik Negeri Malang. Jurnal Energi dan Teknologi Manufaktur diterbitkan dua kali dalam setahun pada bulan Juni dan Desember. Kami menerima artikel hasil penelitian ilmiah di bidang Teknik Mesin khususnya: Energi Terbarukan, Pemeliharaan Mesin Konversi Energi, Inovasi Teknologi Manufaktur, Pemeliharaan Mesin Manufaktur dan Analisis Sistem Manufaktur.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 7 Documents
 1 
Search results for , issue "Vol 5 No 02 (2022)" : 7 Documents clear
COMPARISON OF THE FUEL CALORIFIC VALUE FROM PLASTIC PYROLYSIS WITH COMMERCIAL FUEL Dianta Mustofa Kamal
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.123

Abstract

Plastic, which is originated from petrolum, is possible to turn it to alternative fuel. Moreover in 2008, the estimated amount of midden in Indonesia reached 38.5 million tons per year with the largest compositions are organic waste (58%), waste plastics (14%), waste paper (9%) and wood waste (4%) (Ministry of Environment, 2008). Meanwhile in Depok City, the amount of waste which goes to Depok City’s landfill waste is 350-400 tonnes / day (Head of Technical Unit Landscape Depok City Sanitation Department, 2012). From the data, above, can be confirmed using plastic waste as an alternative fuel can be superior because plastic waste is the raw material which is cheap, easily processed, and can reduce environmental pollution. The processing of plastic waste into fuel conversion is done using a plastic waste machine with a continuous system, the working principle of heating at high temperature. Tests which are conducted in this study is to test the octane rating by bomb calorie meter, test anylizer gas emissions, and test octane gas chromatography. Plastic waste fuel, which is the outcome from plastic waste conversion machine with continuous system, can be used as fuel for vehicles, it is because the plastic oil calorific value 10 519 cal / g equivalent calorific value premium. This research is expected to address the scarcity of fossil fuels, and increasing public awareness of using alternative fuel, especially plastic waste fuel.
PENGARUH METODE PROSES MANUFAKTUR TERHADAP KEKUATAN BENDING KOMPOSIT SERAT KULIT POHON WARU SEBAGAI MATERIAL TERBARUKAN UNTUK PESAWAT NIRAWAK Ahmat Herman; Dadang Hermawan; Arief Rizki Fadhillah
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.131

Abstract

Perkembangan teknologi komposit saat ini banyak mengarah pada komposit alam/ Nature Composites (NACO). Komposit alam memiliki beberapa keunggulan, antara lain: dapat didaur ulang atau ramah lingkungan, memiliki sifat mekanik yang spesifik, ringan, memiliki sifat isolator panas dan suara, tahan korosi, serta dapat dijadikan sebagai penghambat listrik yang baik selain itu juga ramah lingkungan. Salah satu komposit alam yang saat ini sedang banyak dikembangkan dan diteliti yaitu komposit serat kulit waru. Komposit ini merupakan salah satu inovasi teknologi material maju yang memanfaatkan serat alam sebagai material reinforcing phase yang dikombinasikan dengan resin sintetis sebagai material matrix phase. Beberapa penelitian menunjukkan komposit serat kulit waru memiliki kekuatan tarik, impak dan bending yang cukup baik, Berdasarkan hasil penelitian komposit serat kulit pohon waru, maka dapat dilihat bahwa komposit ini memiliki potensi yang cukup baik dari segi sifat mekaniknya, sehingga dapat diimplementasikan pada pesawat nirawak dengan spesifikasi, antara lain: ringan, kaku, tidak mudah patah, tangguh serta tahan terhadap getaran dan korosi. Tujuan dari penelitian ini untuk mengetahui pengaruh metode proses manufaktur terhadap sifat mekanik kekuatan bending komposit serat kulit pohon waru sebagai material terbarukan untuk pesawat nirawak. Dengan 3 macam metode manufaktur yaitu, Hand lay up, Press, dan Vacuum infusion resin, Selain dilakukan pengujian bending, dalam penelitian ini juga dilakukan foto mikro dan foto patahan untuk mengetahui bagaimana struktur dari bahan uji yang sudah diuji dengan metode Bending tersebut. Hasil pengujian bending komposit serat kulit pohon waru tersebut, kekuatan bending yang baik terdapat pada proses manufaktur Press. Berdasarkan hasil foto patahan dan foto mikro komposit serat kulit pohon waru menunjukan ikatan antara resin bisphenol LP-1Q pada metode manufaktur Vacuum infusion resin memiliki ikatan paling baik dan resin dapat menutup dengan sempurna dan mengisi serat kulit pohon waru secara keseluruhan
Pengaruh Temperatur Pemanasan dan Pendinginan Terhadap Sifat Mekanik Pada Proses Annealing Baja AISI410 Setelah Pengerasan BAYU PRANOTO; Subagiyo Subagiyo; Samsul Hadi
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.132

Abstract

Stainless steel has good mechanical properties compared to other materials for strength and hardness, usually will experience an increase in hardness after hardening. The purpose of this study was to obtain information about: Value of hardness and strength Impact of martensitic stainless steel annealed with variations in temperature and cooling. The research method used is an experimental method, namely by annealing martensitic stainless steel with variations in temperature and cooling rate. The results were tested for Impact and hardness using the Rockwell C (HRC) method with the category of Research Infrastructure development and science and technology in the field of Mechanical Engineering. The research results are expected to be used as an alternative to improve the mechanical properties of materials, especially in the annealing process. The level of technological readiness to be achieved: 2, because in this study a model is made to test the truth of the basic principle that the hardness level of martensitic steel in annealing is influenced by varying temperatures and cooling.
Pengaruh Fraksi Volume Terhadap Sifat Mekanis Komposit Forged Fiberglass Metode Compression Mould Muhammad Fakhruddin; Imam Mashudi; Mochamad Muzaki; Hilmi Iman Firmansyah; Bayu Pranoto; Hangga Wicaksono
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.134

Abstract

Fiber-reinforced composites can be classified into two parts, namely short fiber composites and long fiber composites. Long fibers are stronger than short fibers. Long fiber (continuous fiber) is more efficient in laying than short fiber but short fiber is easier to lay than long fiber. Fiber length affects the processability of the fiber composite. Judging from the theory, long fibers can continue the load and stress from the stress point to the other fiber. In this study, the volume of chopped glass fiber composite with random matrix direction was varied with respect to polyester resin. Making forged fiberglass composites with the press mold method to minimize the occurrence of air bubbles during the composite molding process. Testing the mechanical properties of the forged fiberglass composite using the three-point bending and tensile testing methods. The expected result is the variation of the volume fraction of random chopped glass fiber to polyester resin. The TKT to be achieved from this research is TKT level 3, which is an analytical study that supports the prediction of the performance of the effect of the volume fraction between glass fiber and resin on the mechanical properties of the tensile and bending strength of forged glass fiber composites
Analysis of Fiber Metal Composite Shear Strength Using Independent Variables of Fiber Angle Orientation and Metal Surface Roughness Hilmi Iman Firmansyah; wirawan wirawan; Moh Nasir Hariyanto
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.136

Abstract

Fiber Metal Laminates (FML) is a classification of metallic materials consisting of several thin layers of metal combined with composite materials. The constraint of FML is the weak bond between the layer material and the core composite. The weak bond between the layer material and the core composite can be influenced by several things, including the absence of an interlock system between the layer material and the core composite so that the strength of the FML composite decreases. In this study, a study was conducted on the shear strength of FML composites using the independent variables of surface roughness and fiber angle orientation. The highest shear strength in FML composite with fiber angle orientation of 45/45° and with a surface roughness value of 2.128 m with a shear strength value of 2.7 MPa
ANALISIS TEMPERATUR PELAT LANDASAN HOT-GAS WELDING DAN BENTUK BEVEL TERHADAP KEKUATAN TARIK LASAN HDPE Kris Witono; Agus Setiawan; Sugeng Hadi Susilo
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.137

Abstract

Welding has developed rapidly at this time, both for metallic and non-metallic materials, one of the methods used for plastic welding is Hot-Gas Welding. Plastic is a very difficult material to weld due to its low thermal conductivity. The quality of the mechanical properties of the existing plastic welded joints is not close to the strength of plastic objects without welding. The purpose of this study was to determine the effect of variations in the temperature of the base plate and variations in the shape of the bevel during the Hot-Gas Welding process on the tensile strength of HDPE sheet welded joints, to determine the conditions of the interaction between variations in the temperature of the base plate and variations in the shape of the bevel during the Hot-Gas Welding process. HDPE sheet welded joints that produce maximum tensile strength values. In this study, two independent variables were used, namely the base plate temperature (30,70,110,150 C), variations in bevel shape (V, X, U) and three controlled variables which included HDPE plastic material with a thickness of 5mm, using added filler material in the form of HDPE plastic with a diameter of 4 mm and a hot gun airflow heating temperature of 250℃. The tensile test standard uses the ASTM D 638-03 standard and for data processing is done by DOE factorial, as supporting data macrostructural photos of each weld joint are carried out. The results showed that the maximum tensile strength of HDPE welded joints was obtained at the temperature of the base plate of 150°C and the V bevel shape with a value of 18.46 MPa or 84.22% of the parent material
ANALISIS PROPERTI BAHAN BAKAR MINYAK DARI PLASTIK LDPE (LOW DENSITY POLYETHYLENE) DAN PET (POLYETHYLENE TEREPHTHALATE) MENGGUNAKAN PROSES PIROLISIS Mietra Anggara; Ajie Prana Mesa; Bernadus Crisanto Putra Mbulu
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.138

Abstract

Plastic waste is an environmental problem that is hotly discussed in the era of globalization. Almost all people are starting to realize the dangers caused by environmental damage. The purpose of this study was to determine the properties of fuel oil resulting from the pyrolysis process for LDPE (Low Density Polyethylene) and PET (Polyethylene Terephthalate) plastics. The research method used is through experiments with the Pyrolysis process. In managing LDPE and PET plastic waste, namely the pyrolysis technique which can produce fuel oil. The types of plastic used in this study were LDPE plastic bags, garbage bags and PET juice plastic cups and mica plastic. This research was carried out using a temperature of 300 0C with a time of 1 hour and a mass of 1 kg of plastic to get different density results. The results showed that the plastic bag had an average value (density) of 0.929 g/mL, (viscosity) with an average of 0.565 m2/s and (Flash point) 410C, but the trash bag had an average (density) of 0.909 g/mL, (viscosity) with an average of 0.43 m2/s and (Flash point) 560C, then on plastic juice cups it has an average value (density) of 0.884 g/mL (viscosity) with an average of 0.575 m2/ s and (Flash point ) 350C, while mica plastic has an average density value of 1.074g/mL, (viscosity) with an average of 0.575 m2/s and (Flash point ) 420C. The results of pyrolysis of LDPE and PET plastic types are good fuels to use, namely pyrolysis fuel for PET plastic juice cups closer to premium, while the LDPE plastic type in the plastic bag category tends to be close to premium

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