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INDONESIA
Jurnal Teknik Mesin
Published by Politeknik Negeri Padang
ISSN : 18298958     EISSN : 26555670     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Teknik Mesin adalah sebuah jurnal peer review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang teknik mesin.
Arjuna Subject : -
Articles 204 Documents
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Destructive Test Material SA516 70N Untuk Kualifikasi Pengelasan Standar ASME BPVC Sec. IX-2021 Benny Haddli Irawan; Nugroho Pratomo Ariyanto; Jonas Felix Siregar
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1209

Abstract

This research contains about destructive test for WPS qualification (welding qualification record) in making pressure vessel. WPS can be declared qualified if they have PQR (procedure qualification record). In making PQR required testing destructive test the test is carried out by damaging the specimen based on ASME standards (american society of mechanical engineers) BPVC (boiler pressure vessel code) Sec. IX-2021 with SA516 70N material. Indestructive test for this welding qualification, there are 4 types of testing with the number of specimens to be tested, namely: testing tensile (2 specimens), testing bend (4 specimens), testing charpy iMPact (2 sets or 6 pcs specimen), and testing hardness vickers (1 specimen). Number of specimens tensile and bend specified in ASME BPVC Sec. IX-2021 on QW-451.1 and for the number of test specimens charpy iMPact has been specified in ASME BPVC Sec. VIII. 1-2021 on UG-84 as well as for total specimen hardness vickers specified in NACE MR0175/ISO 15156-2:2023E table A.1. Results of testing tensile obtained a figure of 542 MPa (N/mm2) with a minimum requirement of 485 MPa (N/mm2), testing bend no open discontinuities found, for test results charpy iMPact the smallest is 47 joules with a minimum requirement of 20 joules for single hairy. And for testing hardness vickers highest value 217 HV on section weld cap with requirements weld root is 250 HV while the highest value is on the part weld cap is 275 HV. The results of this test indicate that the welding procedure complies with the requirements and conditions set out in ASME BPVC Sec. IX-2021 in testing destructive test.
Rancang Bangun Alat Pengering Tenaga Surya (Solar Dryer) Portabel Berbentuk Prisma Segitiga Iklas Sanubary; Iman Syahrizal; Mizan Junaidi
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1213

Abstract

This research aims to design a solar dryer to increase drying room temperature. The drying room is designed in the shape of a triangular prism. The dried test material is Arabica coffee. The method used in this research is experimental by comparing the drying results in a solar dryer (inside) and traditional method (outside). Data collection was carried out for 3 days, starting at 09.00 WIB to 15.00 WIB with intervals every 1 hour. The data measured are the temperature inside and outside the solar dryer and the mass of the test material before and after drying. The results showed that the difference in the average temperature measured inside and outside the solar dryer on day 1 was 11.1 oC, on day 2 it was 11.6 oC and on day 3 it was 8.3 oC. The total mass reduction of the test material during 3 days of drying inside the solar dryer was 180.91 gram and outside the solar dryer was 164.03 gram. The average drying rate inside the solar dryer was 10 gram/hour while outside the solar dryer was 9.1 gram/hour. Based on these result, solar dryer can produce higher temperatures, greater mass reduction and higher drying rates than traditional methods
Rancang Bangun Konstruksi Mesin Pencacah Plastik Multifungsi Kapasitas 50 Kg/Jam Elvis Adril; Fardinal Fardinal; Yuliarman Yuliarman; Nasirwan Nasirwan; Vemil Beswara
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1217

Abstract

The use of plastic in human life is increasing. In an effort to utilize plastic waste as a recycled material, it is necessary to create a tool or machine that can be operated as a tool for chopping plastic. The main components of a plastic chopping machine are the electric motor, pulleys and belts, blades and shafts, pins, bearings, hoppers and frames. The working principle of the plastic chopping machine is that the electric motor shaft rotates then transmits power to the chopping knife shaft with the help of pulleys and v-belts to chop the plastic that enters from the hopper. The plastic chopping machine uses power from a 1.5 HP electric motor with a motor speed of 1450 rpm and a shaft rotation speed of 580 rpm. The angle iron used for construction planning is SS4400 steel angle iron with a yield strength of 245 N/mm2, a safety factor of 5, and the bending stress is smaller than the allowable stress so that it is safe to use as a frame construction for plastic chopping machines.
Analisa Kapasitas Mesin Pencacah Multi Mixer Pakan Ayam KUB Muchlisinalahuddin Muchlis nalahuddin; Hendrix Triwaldi; Desmarita Leni; Aulia Naro; Deviya Aprilman
Jurnal Teknik Mesin Vol 17 No 1 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.1.1224

Abstract

In this study, the capacity analysis of the multi mixer chopper machine was carried out with the parameters applied such as: rpm, time and input and output of the machine in terms of the weight of the input material and the output of the feed produced in order to calculate the performance and capacity of the KUB chicken feed multi mixer chopper. (Balitbangtan superior native chicken). In the process of analyzing the capacity of the multi mixer chopping machine for kub chicken feed, the preparations made include preparing tools and materials for testing, testing, data collection, analysis and proceed with drawing conclusions. In data collection, enumeration and mixing tests will be carried out, where the samples of the test materials used are vegetable waste, bran and water. The largest chopped output at the initial input with a weight of 1 kg is obtained from the engine speed of 2895 rpm with a chopped weight of 0.95 kg. A suitable ratio for the feed mix is ​​1 kg of vegetable waste, 1 kg of bran and 2 kg of water. So the capacity of the multi-mixer chopping machine is known to be 239.521 kg/hour with a material ratio of 1 kg of chopped vegetable waste, 1 kg of bran and 2 kg of water.
Studi Perpindahan Panas pada Proses Pembakaran Briket Berbahan Dasar Pakis Hutan Jusuf Haurissa; Mathinus Pembuaian
Jurnal Teknik Mesin Vol 17 No 1 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.1.1225

Abstract

There is an ongoing effort to develop and improve the quality of briquettes, which could become an alternative fuel source. This can be achieved by exploring the utilization of raw materials like kerosene. The goal of this study is to analyze the convection and conduction processes occurring in the combustion of tree ferns. It is conducted to explore the use of tree ferns as a raw material for the production of briquettes. The prototype briquette made using tree ferns is characterized by a honeycomb design with 14 holes and a diameter of 20 cm. It is made using a mixture of 20% adhesive and 80% tree fern charcoal. The various factors that influence the combustion process include the initial temperature, the pot wall temperature, the environmental temperature, and the moisture content of the briquette. Different instruments such as anemometer, an infrared thermometer, a stopwatch, and a moisture meter are also used in the study. The study revealed that the tree fern briquette made from 14 holes exhibited a convection heat transfer power of 4302.444watts and a conduction heat transfer power of 5106.5watts. The efficiency of the two processes allowed the briquettes to burn for about 2 hours and 30 minutes, and they could sustain a moisture content of 12%. The study indicates that tree ferns can serve as an energy source alternative to kerosene. This presents a sustainable and eco-friendly way of meeting energy demands
Rancang Bangun Mesin Pengupas Kulit Ari Buah Kelapa Menggunakan Metode Verein Deutshcer Ingenieure (VDI) 2222 di PT PECU Sri Suci Yuniar; Asha Asyita Sundari; Hendro Prassetiyo
Jurnal Teknik Mesin Vol 17 No 1 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.1.1231

Abstract

Coconut is a plant that has many benefits and can be utilized as a whole starting from the stem, meat, coir, shell, water, and coconut cuticle. PT Pacific Eastern Coconut Utama (PECU) is the largest coconut processing company in Java Island with its main products, namely liquid (Coco Day and Liquid Coconut Milk) and non-liquid (Desiccated Coconut and Coconut Powder). Before coconuts become final products, namely non-liquid products (Desiccated Coconut and Coconut Powder), these coconuts will go through the process of stripping the coconut cuticle. In this process, PT PECU still uses manual tools which require more time and effort and not all operators have the same abilities. Therefore, companies need to design appropriate tools using the Verein Deutscher Ingenieure 2222 (VDI 2222) method. This method is used to develop and design products, systems or tools by considering various aspects, such as user needs, security and efficiency.The results of this design can help companies to increase company productivity, do not endanger the operator, and the machine can be operated easily.
Studi Eksperimental Pengaruh Jarak Tempuh Dan Temperatur Udara Sekitar Terhadap Penurunan Nilai Viskositas Oli Mesin Pada Engine 125 CC Amnur Akhyan; Roy Sahata
Jurnal Teknik Mesin Vol 17 No 1 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.1.1235

Abstract

There are various types of motorbike oil, riders can choose oil according to their needs. This experiment aims to find out which oil is suitable for use by a 125 cc engine at different air temperatures according to the driver's needs. This experiment will analyze the reduction in oil viscosity values ​​with brands of oil A, oil B and oil C. The mileage used is 20 km, 40 km and 60 km with air temperatures of 33-36°C and 28-30°C. The viscosity value was measured using a Brookfield viscometer. Based on the results of the tested data, the percentage reduction in viscosity value at an air temperature of 33-36°C with a distance of 60 km is Oil A 26%, Oil B 62%, and Oil C 19%, therefore Oil C is better used in areas with a temperature of 33-36°C because it does not experience a significant decrease in viscosity. The percentage reduction in viscosity value at an air temperature of 28-30°C with a distance of 60 km is oil A 11%, oil B 62%, and oil C 62%, so oil A is better used in areas with a temperature of 28-30°C.
Media Pembangkit Gelombang Skala Laboratorium Jamiatul Akmal; Ahmad Suudi; Yoki Surya Grahita; Asnawi Lubis; Novri Tanti; Zulhendri Hasymi
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1239

Abstract

In the design of offshore building structures, calculations are required by looking at the factors that occur in the ocean. A big factor that occurs is the disturbance force of waves which can disrupt the strength of the building structure to be created. For this reason, this research makes a wave generating media device on a laboratory scale. With this tool, efforts are also made to resemble the original wave, where the deeper it is, the smaller the strength of the wave formed. This effort is an implementation of the wave forms that occur in the open sea. The results of the design of a wave generating media device measuring 3690x830x940 mm. From wave observations and calculations, it was found that the wavelength was 0.5m and the amplitude was 0.01m. It was concluded that the type of wave characteristic produced by this tool was categorized as an airy wave.
Perancangan Mesin Penetas Telur Unggas Otomatis Menggunakan Acci (Automatic Computer Control Incubator) Kapasitas 360 Butir Haris Haris; Nota Effiandi; Sicilia Afriyani; Feri Saputra
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1242

Abstract

Proses penetasan telur unggas merupakan salah satu proses penting dalam budidaya peternakan unggas. Proses ini harus dilakukan dengan cermat dan teliti agar hasil penetasan dapat memuaskan. Namun, proses penetasan telur secara manual membutuhkan waktu dan tenaga yang cukup banyak dan terkadang belum efisien, sehingga dibuat rancangan alat penetas telur unggas otomatis kapasitas 360 butir. Alat ini menggunakan sistem pengontrolan yang dinamakan automatic computer control incubator. Tujuan dari penelitian ini adalah untuk merancang mesin penetas telur unggas otomatis yang digunakan untuk mempermudah dalam pengontrolan gerakan rak telur, suhu dan kelembaban udara. Proses perancangan dimulai dari survei lapangan untuk mengetahui kebutuhan alat yang akan dirancang dan kemudian dibuatlah desain dari mesin penetas telur unggas otomatis. Mesin ini berukuran 100 x 167 x 50 cm yang terdiri dari 6 (enam) buah rak untuk meletakkan telur unggas. Pada bagian atas mesin diletakkan kontroller inkubator untuk mengontrol secara otomatis pergerakan rak, suhu, dan kelembaban mesin
Perancangan Mesin Press Kaleng Minuman Menggunakan Tenaga Motor Listrik Sir Anderson; Khairul Amri; Maimuzar Maimuzar; Hanif Hanif; Figo Zubrianto
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1243

Abstract

Aluminum can waste is becoming more prevalent. There is no trash processing system, and the public does not value recycling. Used-goods collectors may damage themselves by crushing cans with a hammer to reduce volume. To improve the recycling process of aluminum beverage cans, an electric-powered press machine will be designed. The design of this press machine is intended to assist users in the waste treatment process in minimizing space, especially in the trash can storage space, and to make it easier for collectors of recyclables. This equipment is used to compress objects with a driving force. The press machine developed can reduce the volume or dimensions to increase the capacity of transmitting cans, which will subsequently be melted again. Previous research has been based on pneumatic motors and manufacturing techniques that demand a large amount of space and are therefore impractical. Meanwhile, despite having the same power of 1/2 HP, the smaller rotation speed of 272.5 RPM results in a reduced pressing force of 59.17 kgf. The motor was designed to have a power output of 1/2 horsepower and a rotational speed of 1400 revolutions per minute. The transmission system uses a 76.2-millimeter diameter pulley along with a belt that has a type 50 speed reducer ratio of 1:60. A cam, coupled with the speed reducer, moves the pressing cylinder translationally. This enables the pressing cylinder to press up to 1,380 cans per hour. The force required to press the can is 951.57 N.

Page 15 of 21 | Total Record : 204

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