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All Journal Teknika AUSTENIT Machine : Jurnal Teknik Mesin MACHINERY: Jurnal Teknologi Terapan Jurnal Masyarakat Madani Indonesia Innovative: Journal Of Social Science Research International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Engineering: Journal of Mechatronics and Education
Sundari, Ella
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering 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 Public Health Social Sciences Other

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KAJIAN ANALISIS KEGAGALAN PADA CHAIN FFB CONVEYOR DI PT. LBP DENGAN MENGGUNAKAN SIMULASI CAE Helmi, Muhammad Ilyasa; Sundari, Ella; Junaidi, Ahmad
MACHINERY Jurnal Teknologi Terapan Vol. 2 No. 2 (2021): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.148 KB) | DOI: 10.5281/zenodo.5812342

Abstract

Di PT. Lambang Bumi Perkasa memiliki standar spesifikasi pabrik pengolahan Tandan Buah Sawit (TBS) 30 Ton/Jam. Saat ini pabrik memaksakan operasional pengolahan pabrik menjadi 45 Ton/Jam dengan spesifikasi pabrik 30 Ton/Jam. Tentu hal tersebut akan menimbulkan masalah pada mesin yang ada di pabrik. salah satu masalah tersebut yakni pada sub unit yakni pada FFB conveyor. FFB conveyor merupakan mesin yang bekerja untuk mentransfer Tandan Buah Sawit (TBS) dari loading ramp menuju stasiun Sterilizer sering mengalami overload pada chain yang mengakibatkan Breakdown Maintenance. Oleh karena itu perlu dilakukan kajian teknis dengan analisis (metode stress dan fatigue) pada chain FFB conveyor tersebut. Dari hasil analisa tersebut didapatkan; 1) Dari segi analisis stress (stress analysis) didapat bahwa stress safety factor pada chain masih dalam kategori aman dengan nilai minimum 10,89 μl 2). Analisis fatigue (fatigue analysis) didapatkan bahwa umur pakai (lifetime) dari chain FFB conveyor dengan pembebanan 45 Ton/Jam ialah 10910 jam, sedikit lebih rendah dari pembebanan 30Ton/Jam, yakni 12000 Jam. 3). Nilai seting yang tepat pada Thermal Overload Relay (TOR) yang sesuaikan dengan kemampuan chain yakni 7,13 A. Dengan output tersebut diharapkan dapat menjadi solusi dalam mengatasi masalah overload pada chain FFB conveyor di PT. Lambang Bumi Perkasa.
DESAIN ALAT BANTU TROLI PENGGULUNG SELANG PEMADAM KEBAKARAN SEMI OTOMATIS kms, m amin khaitami; Arifin, Fatahul; Sundari, Ella
MACHINERY Jurnal Teknologi Terapan Vol. 3 No. 1 (2022): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (722.782 KB) | DOI: 10.5281/zenodo.6413354

Abstract

Troli Penggulung Selang Pemadam Kebakaran Semi Otomatis alat ini berfungsi untuk mengefisienkan waktu dan tenaga agar mempermudah Pemadaman kebakaran untuk menggulung Selang supaya mengurangi bergesekan dengan permukaan tanah yang bisa menyebabkan selang mudah rusak dan robek. Penelitian ini bertujuan untuk mendesain dan menganalisis simulasi kekuatan alat dengan variasi penempatan beban mulai dari 60 kg sampai dengan 300 kg, Dengan menggunakan software Autodesk Inventor Professional yang dilengkapi dengan metode finite element analysis (FEA) dari simulasi Konstruksi Troli Penggulung Selang Pemadam Kebakaran Semi Otomatis yang memiliki hasil analisis Von Messes minimum adalah 37,8 Mpa dengan beban 60 kg, dan maksimum adalah 186,2 Mpa dengan beban 300 kg, Lendutan minimum adalah 0,322 mm dengan beban 60 kg, dan maksimum adalah 1,605 mm dengan beban 300 kg, Faktor Keamanan minimum adalah 5,48 dengan beban 60 kg, dan maksimum adalah 1,11 dengan beban 300 kg.cm).
ANALISA PENGARUH NORMALIZING TERHADAP KEKERASAN BAJA PEGAS DAUN Febriansyah, Muhammad; Junaidi , Ahmad; Sundari, Ella
MACHINERY Jurnal Teknologi Terapan Vol. 3 No. 2 (2022): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.6857466

Abstract

Along with the development of people's lifestyles resulted in an increasing need for vehicles. In four-wheeled motorized vehicles, the suspension system is a very important part because it can affect the safety and comfort for the rider. The spring is the main component in the vehicle suspension which acts as a medium to receive dynamic loads from the road surface and vibrations on the wheels so that they are not transmitted to the vehicle frame directly and keep the wheels in contact with the road surface. the results of testing the raw material hardness specimens and specimens after normalizing, the average hardness of raw materials is 47.6 HRa, the specimens after normalizing at a temperature of 800° get an average hardness of 29.3 HRa, on the specimens the results after normalizing at a temperature of 850° get an average hardness of 35.3 HRa, the specimens after normalizing at a temperature of 900° get an average hardness of 41 HRa.
ANALISIS KEKASARAN MOLDING BERBASIS ADDITIVE MANUFACTURING MATERIAL POLYLACTIC ACID Hafiz, Muhammad Al; Junaidi, Ahmad; Sundari, Ella
MACHINERY Jurnal Teknologi Terapan Vol. 3 No. 3 (2022): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.7246701

Abstract

At this time the development of technology has moved very fast. Humans need technology to facilitate every activity, 3D Printers continue to develop and are widely used in various countries. 3D printing uses a special printing machine to produce three-dimensional shapes. Molding or molding is a production process by forming raw materials using a rigid frame or model called a mold. This research was conducted to change the function of 3D printing which is usually to print prototypes into molds. as well as knowing the level of roughness of the mold that is printed. analysis using ANOVA that has been applied, it can be concluded that layer height: low, standard, high has an effect on the roughness of the printed molding, and it can be proven in the discussion chapter with Fcount 3.150 > Ftable 2.56. with a significant 0.034 < 0.05. and the lowest roughness results are printed using a layer height: 0.16 mm/s (high quality).
ANALISIS PENGARUH PENAMBAHAN UNSUR MAGNESIUM TERHADAP KUAT LENGKUNG PADA MATERIAL ALUMINIUM farhan, farhan ikbar; Rasid, Muhammad; Sundari, Ella
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 1 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.7684050

Abstract

The brake handle is one of the components to restrain the vehicle's movement rate by holding the clamp mechanism, the problem that exists in the brake handle when there is a hard impact. Handles are usually made with aluminum metal material, so that aluminum has certain properties in this study combined with magnesium elements with variations of 1%, 3%, and 5%. Magnesium is the lightest chemical element among other industrial metals. The low density value and strength of magnesium is an advantage of this element as an alloy. The alloy used is a metal casting process using the sand casting method. After combining aluminum and magnesium in a bending test to get an acceptable bending strength. The percentage value of magnesium has a significant effect with a comparison of Fcount > Ftable value 72.29 > f0.0001(2;9) = 4.26. The percentage factor obtained is 87% and the maximum value is 38.08 kg/mm2 and the minimum value is 30.46 kg/mm2.
ANALISA PENGARUH PERLAKUAN ALKALI TERHADAP SIFAT MEKANIK KOMPOSIT BERPENGUAT SERAT BUAH KELAPA SAWIT Sundari, Ella; Karmin, Karmin; Putri, Fenoria; Arif Budiman
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8048689

Abstract

Various innovations have been developed by researchers to obtain and develop new natural fibers because of its advantages. Some of the advantages of natural fibers such as excellent physical properties, abundant natural materials, do not damage the environment and lower production costs. This study aims to produce alternative natural fibers by utilizing fiber from oil palm fruit which is commonly found in South Sumatra. The research was carried out by preparing resin and catalyst with a ratio of 100 ml: 1 ml which was then poured into the mold as much as 25% and continued by arranging palm fruit fiber randomly. After 8 hours, the resulting composite material is soaked for 2 hours with NaOH alkaline liquid with variations of 0%, 5% and 7%. The mechanical properties of the palm fruit fiber composite increased after being treated with alkali, where the highest values ​​were tensile strength 22.46 N/mm2, impact strength 0.15 J/mm2 and bending strength 87.50 N/mm2 obtained at variations of alkaline NaOH of 7 %.
PERANCANGAN TURBIN ANGIN SUMBU VERTIKAL SEBAGAI PEMBANGKIT LISTRIK (SKALA LABORATORIUM) Meidian Pratama, Risco; arifin, Fatahul; Sundari, Ella; Okviyanto, Toni; Yahya, Yahya; Martomi, Eka Satria; Firdaus, Firdaus
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 3 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10122311

Abstract

Wind is one of the newest energy sources that is becoming increasingly popular nowadays. The use of wind energy can be converted into electrical energy for wind turbine cells. However, there are two types of wind turbines, namely horizontal and vertical. Holistic wind turbines are usually used in one direction while vertical wind turbines are used in all directions. The shape of the blades and the number of wind turbine blades greatly influence the power produced. So the research this time is to find out the influence of the blade shape that has been varied and the number of blades with wind speeds of 2.5 m/s, 3 m/s, 3.5 m/s and 4 m/s on the resulting generator power so that the efficiency results What has been obtained can be designed to design wind turbines with varied blade shapes. Testing was carried out in a laboratory designed independently with a wind source using a fan and Dimmelr air conditioner. The results of tests that have been carried out have the highest gelnelratolr power known at 4 blades with a wind speed of 4 m/s with a power value of 0.34 watts while the smallest gelnelratolr power is known at 2 blades with a wind speed of 2.5 m/s with rated power 0.04 Watt. So that the research results from all the tests, the highest efficiency value was obtained at 4 blades with a wind speed of 2.5 m/s with a value of 24.4% and the lowest efficiency value was obtained at 2 blades with a wind speed of 3 m/s 6, 4 %.
Effect of Zinc (Zn) addition on Impact and Hardness Properties of Aluminium (Al) scrap Ismail, Nur Faiqa; Zulkipli, Muhammad Asyraf; Yusof, Khairul Huda; Sundari, Ella; Putri, Eresyah
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 1 No. 1 (2023): IJMEAS - October
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v1i1.216

Abstract

The aim of this study is to investigate the effect of zinc (Zn) material added to used aluminum (Al), which should affect its strength and hardness. In this current study, zinc material (Zn) was applied as an additional material to aluminum scrap, by mass percentages of Al 100% Zn 0%, Al 95% Zn 5%, Al 94.5% Zn 5.5%, and Al 94% Zn 6%, respectively. The results showed that the addition of zinc (Zn) had indeed affected the impact value and hardness properties of aluminum-zinc alloy (Al-Zn). The addition of zinc (Zn) at 6% yielded the highest effective strength value of 0.24 J/mm2, and the lowest effective strength value of 0.14 J/mm2. Although the highest hardness value was found by addition of 6% zinc (Zn), the average hardness was 73.76 HRB and the lowest hardness was 29.23 HRB. In conclusion, as the addition of Zinc (Zn) into the material composition increases, the impact and toughness properties of the material increases.
Optimization Design and Performance of Small-Scale Downdraft Biomass Gasification: A Case Study For Air-Fresh Inlet Homzah, Ozkar F.; Pratama, Rahmad Dandi; Sundari, Ella; Mardiana, Mardiana; Wilza, Romi
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 1 No. 1 (2023): IJMEAS - October
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v1i1.219

Abstract

Biomass is the term for organic compounds, both animals and plants that can be reused as fuel or energy sources. Apart from that, gasification can be interpreted as a process of changing a solid fuel into a gas through thermochemical stages. The fuel used in the downdraft biomass gasification reactor is rice husks and coconut shells. The downdraft type biomass gasification reactor design used Autodesk Inventor professional software and for simulation using Ansys-R2 for 2021 student licensed. As the results after we create modified for inlet fresh-air showed the performance test of the hot start as flame temperature was increased to 21.7°C within the highest temperature reaches to 188.4°C. As a conclusion of modified performance test, we obtained the temperatures of pot-stove are slowly reaches from 6.38°C to 41.75°C of boiling water.
STUDI PERFORMASI SUDU TURBIN ANGIN SAVONIUS TIPE VERTICAL AXIS BERBAHAN KOMPOSIT Homzah, Ozkar F.; Sundari, Ella; Sampurno, Rachmat Dwi; Utami, Ogi Meita; Rahmawati, Lily
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3317

Abstract

The increasing human population, the use of fossil energy such as oil also increases. While fossil energy is one of the largest contributors to carbon emissions that can cause climate change that can be done to control climate change is to switch to the use of renewable energy. The investigation takes the shape of a vertical axis Savonius turbine blade design. The blades are made of a composite material called carbon fiber, and the number of blades varies between 4, 6, and 8 pieces. The study's findings were tested utilizing a blower-generated wind source with wind speeds of 4m/s, 4.5m/s, and 5m/s. A wind tunnel consisting of acrylic material and pipes as a frame construction was used in the test. The test findings show that turbine blades with a total of four blades produce the maximum generator power of 0.274 watts at a wind speed of 5 m/s. Meanwhile, the turbine blade with 8 blades has the lowest output power at a wind speed of 4 m/s and a power value of 0.0028 W. Then, with 8 blades, it has a relatively low output energy compared to 4 and 6 blades. Therefore, the highest efficiency performance of wind turbine use is achieved by a turbine with a number of 4 blades with a maximum efficiency is 9,16% and the minimum efficiency it seen in a wind turbine with a number of blades 8 within 0,07%.
Co-Authors ., Taufikurahman Adian Aristia Anas Ahmad Junaidi Apriatun, Apriatun Arif Budiman Asrafi, Ibnu Berlian, Rizky Darma Prabudi Darus, Imam David Chandra Dede Kurniawan Fahrezi, M. Rifki farhan, farhan ikbar Fatahul Arifin, Fatahul Febriansyah, Muhammad Firdaus Firdaus Hafiz, Kemas Muhammad Hafiz, Muhammad Al Hakim, Ichsanul Helmi, Muhammad Ilyasa HIDAYATI, BAITI Ismail, Nur Faiqa Junaidi , Ahmad Karmin Karmin, Karmin kms, m amin khaitami Krisna, Pratama Pela Kurniawan Saputra Lily Rahmawati, Lily Mardiana Mardiana Martomi, Eka Satria Meidian Pratama, Risco Mochammad Imron Awalludin Mursal, Ahmad Nopriansyah, Agi Okviyanto, Toni Ozkar F. Homzah, Ozkar F. Pangestu, Wahyu Adjie Pratama, Muhammad Alif Pratama, Rahmad Dandi Putri, Eresyah Putri, Fenoria Ramadhani, Kgs.M.Octarian Ramadhony, Tri Satya Rasid, Muhammad REZA FAHLEVI Romli Romli, Romli Sampurno, Rachmat Dwi Sari, Femi Permata Soegeng Witjahjo Sumarna, Herlin Surya, Rayana Djaka Syafei, Syafei Syamsul Rizal Syaputra, Muhammad Bobi Tahsin, Akhmad Fatih Nabil Taufikurahman, Taufikurahman Taufikurrahman Taufikurrahman Taufikurrahman, Taufikurahman Utami, Ogi Meita Widagdo, Tri Wilza, Romi Yahya Yahya Yuliandi, Rizky Brillian Yusof, Khairul Huda Zulensi, Fisabilillah Caudilo Zulkipli, Muhammad Asyraf Zurianti, Zurianti