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All Journal AUSTENIT Machine : Jurnal Teknik Mesin MACHINERY: Jurnal Teknologi Terapan 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 Other

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Desain dan Implementasi Alat Praktikum Kalorimeter Berbasis IOT (Internet of Things) Modul Esp8266 dengan Menggunakan Aplikasi Blynk Hafiz, Kemas Muhammad; Sundari, Ella; Annas, Adian Aristia
Innovative: Journal Of Social Science Research Vol. 5 No. 2 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i2.17744

Abstract

This research develops an IoT-based calorimeter practical tool using the ESP8266 module and the Blynk application to increase the accuracy and efficiency of heat transfer measurements. This tool utilizes the DS18B20 and DHT11 sensors to measure temperature and humidity in real-time, with data sent via the Blynk application. Test results show that this tool has high accuracy and is superior to conventional calorimeters in terms of efficiency and ease of use. ANOVA analysis indicated that the temperature of the liquid had a significant influence on the measurement results, while the type of solid did not show a significant influence. This tool is expected to improve the quality of learning and research in the field of physics
ANALISA PENGARUH PENDINGINAN MENGGUNAKAN METODE KRIOGENIK DAN DROMUS COOLANT TERHADAP KEKERASAN DAN KEKASARAN PADA BENDA KERJA DI MESIN BUBUT Zurianti, Zurianti; Sundari, Ella; Anas, Adian Aristia
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234420

Abstract

In this analysis, a quantitative research methodology is used to test which is better the roughness and hardness values of both cryogenic and dromus coolant cooling methods for the manufacture of chuck locks on lathes with AISI 1045 steel material. As well as using the ANOVA analysis method to process the results. And from the results of the measurement using the Surface Roughness Tester roughness test tool carried out, can be concluded that the chuck lock made on a lathe using the cryogenic cooling method has a smaller roughness value, namely at the N7 level, while the dromus coolant method at the N9 level according to the ISO or DIN 4763:1981 roughness standard, which means that the chuck lock that goes through the cooling process with the cryogenic method can produce a smoother surface than the surface that using the Dromus Coolant cooling method. And from Vickers testing can be concluded that cooling with the liquid nitrogen cryogenic method can increase the hardness of the chuck lock with AISI 1045 steel material, namely dromus coolant (10.62%) and cryogenic (14.64%).
Pengembangan Alat Praktikum Fisika Gaya Gesek Pada Bidang Miring Berbasis Internet of Things Zulensi, Fisabilillah Caudilo; Anas, Adian Aristia; Wilza, Romi; Sundari, Ella; Rizal, Syamsul
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234480

Abstract

Friction Force on An Inclined Plane (FFIP) is one of the important chpaters in physics courses. This study aims to develop and determine the performance of the lab physics lab based on the Internet of Things (IoT). This research method uses qualitative method and experimental approach. This physics lab is afterward compared to theoretical calculations from the FFIP formula by using tests at 3 inclined plane’s angles of 30o, 45o, and 60o, as well as at 2 distances of 40 cm and 70 cm. The data were analyzed using ANOVA of simple linear regression to obtain the level of accuracy and the relationship between the inclined plane’s angles and the distance towards the kinetic friction coefficient of the test objects. The results of the study shows that the development of the lab physics FFIP IoT-based has very decent performance as long as the error percentage (average) is 4.77% or less than 10% as well as the level of accuracy (average) is 95.23%. The results of the analysis showed that the inclined plane’s angles have a significant effect towards the kinetic friction coefficient of the test objects. On the other hand, the distance barely has no effect towards the kinetic friction coefficient.
STUDI PEMANFAATAN LIMBAH ABU TERBANG BATUBARA (FLY ASH) DAN ALUMINIUM DAUR ULANG SEBAGAI PENGGANTI MATERIAL BANTALAN LUNCUR Surya, Rayana Djaka; Taufikurahman, Taufikurahman; Sundari, Ella
MACHINERY Jurnal Teknologi Terapan Vol. 1 No. 1 (2020): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.89 KB) | DOI: 10.5281/zenodo.4540856

Abstract

Aluminium is a soft metal with an attractive appearance, light weight and corrosion resistance. In this study, canned aluminium waste as a matrix and fly ash waste as reinforcement. In making specimens through a casting process using the casting method with a temperature of 7000C. The results of this study, the highest hardness value in the variation of alloy AL 60%: FA 40% at 82,726 kg/mm2 with the lowest hardness level at variation AL 100%: 0% FA at 60,036 kg/mm2 and the highest impact value on AL 100% : FA 0% at 0.0167 J/mm2 with the lowest impact value on the variation AL 60%: FA 40% at 0.0113 J/mm2. From these results it is known that the more weight fraction of fly ash is added to the aluminum, the level of hardness increases and this result is inversely proportional to the impact value because the higher the hardness value of a material, the more brittle the material is. So it can be concluded that canned aluminum waste material and coal fly ash are suitable to be used as a substitute for the sliding bearing material.
ANALISA PENGARUH WAKTU PENAHANAN PADA PROSES PACK CARBURIZING TERHADAP KEKERASAN BAJA KARBON RENDAH ST 37 Apriatun, Apriatun; Taufikurahman, Taufikurahman; Sundari, Ella
MACHINERY Jurnal Teknologi Terapan Vol. 2 No. 1 (2021): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.965 KB) | DOI: 10.5281/zenodo.4748538

Abstract

This study aims to analyze the hardness of low carbon steel ST 37 which received pack carburizing treatment with coconut shell charcoal. In this study, the specimens were divided into ten parts, which is five specimens carried out by pack carburizing, and other five parts by pack carburing and hardening and quenching followed by with oil. The carbon medium was coconut shell charcoal with a percentage of 10.60% volatile, 76.32% carbon, 13.08% ash and CaCO3 as a catalyst. The pack carburizing process is carried out at temperature of 9500C with i holding time of 2 hours, 4 hours, 6 hours, 8 hours, and 10 hours, as the oil quenching media hardness testing is carried out to determine how hard the specimen surface is. And the remit are this research was conducted at the material testing laboratory, Department of Mechanical Engineering, Sriwijaya State Polytechnic.
INVESTIGASI PROSES PEMBUATAN DAN SIFAT MEKANIK PISAU PANDAI BESI DI DESA TANJUNG PINANG KABUPATEN OGAN ILIR Mursal, Ahmad; Sundari, Ella; ., Taufikurahman
MACHINERY Jurnal Teknologi Terapan Vol. 2 No. 1 (2021): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (117.334 KB) | DOI: 10.5281/zenodo.4748626

Abstract

Semakin meningkatnya perkembangan hidup manusia maka jaman pun ikut berkembang dengan pesat. Di kabupaten Ogan Ilir tepatnya di desa Tanjung Pinang proses pembuatan pisau atau kerajinan pandai besi lainnya dilakukan dengan cara yang masih tradisional dan hanya dapat menggantungkan kekuatan suatu benda dari bahan dasar yang digunakan, Tujuan utama dari penelitian ini untuk mengetahui proses pembuatan, sifat mekanik dan kekerasan material dari pisau pandai besi ciri khas desa tanjung pinang kabupaten ogan ilir. Pada penelitian ini memilih pisau cap garpu made in solngen germany sebagai perbandingan sifat mekanik dan kekerasan material dari pisau pandai besi. Berdasarkan pada penelitian ini menunjukan bahwa nilai kekerasan vickers dari jenis pesimen Pisau Pandai Besi memliki Vickers Hardness Number (VHN) 392,51 kg/mm² pada titik A, 394,46 kg/mm² pada titik B, 391,69 kg/mm² pada titik C dengan Vickers Hardness Numbers Rata - rata (VHNr) sebesar 392,88 kg/mm, Spesimen Pisau Cap Garpu memiliki Vickers Hardness Number (VHN) 373,28 kg/mm² pada titik A, 375,81 kg/mm² pada titik B, 371,54 kg/mm² dengan Vickers Hardness Number Rata - rata (VHNr) sebesar 373,54 kg/mm². Berdasarkan hasil penelitian ini dapat disimpulkan bahwa Tingkat kekerasan Pisau Pandai Besi ciri khas Desa Tanjung Pinang Kabupaten Ogan Ilir lebih besar daripada tingkat kekerasan yang dimiliki oleh Pisau Cap Garpu.
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).
Co-Authors ., Taufikurahman Adian Aristia Anas Ahmad Junaidi Apriatun, Apriatun Arif Budiman Asrafi, Ibnu Darma Prabudi Dede Kurniawan farhan, farhan ikbar Fatahul Arifin, Fatahul Febriansyah, Muhammad Firdaus Firdaus Hafiz, Kemas Muhammad Hafiz, Muhammad Al Helmi, Muhammad Ilyasa 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 Mursal, Ahmad Nopriansyah, Agi Okviyanto, Toni Ozkar F. Homzah, Ozkar F. Pangestu, Wahyu Adjie Pratama, Rahmad Dandi Putri, Eresyah Putri, Fenoria Rasid, Muhammad REZA FAHLEVI Sampurno, Rachmat Dwi Sari, Femi Permata Soegeng Witjahjo Surya, Rayana Djaka Syamsul Rizal Syaputra, Muhammad Bobi Taufikurahman, Taufikurahman Taufikurrahman Taufikurrahman Taufikurrahman, Taufikurahman Utami, Ogi Meita Widagdo, Tri Wilza, Romi Yuliandi, Rizky Brillian Yusof, Khairul Huda Zulensi, Fisabilillah Caudilo Zulkipli, Muhammad Asyraf Zurianti, Zurianti