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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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Pengaruh Variasi Suhu Tempering Terhadap Hasil Pengelasan Elektroda SMAW E6013 Pada Baja SS400 Leo Van Gunawan; Muhammad Luthfi; Muhamad Ghozali; Sukroni Sukroni; Mohammad Azwar Amat
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.17.1.1384

Abstract

E6013 merupakan elektroda pengelasan Shield Metal Arc Welding (SMAW) yang sering digunakan dalam industri konstruksi bangunan maupun galangan kapal. Selain harganya yang murah, elektroda ini juga dapat digunakan pada segala macam posisi pengelasan serta dapat digunakan pada mesin Las AC / DC. SS400 merupakan jenis baja karbon rendah yang paling banyak digunakan dalam pembuatan konstruksi bangunan maupun kapal. Baja SS400 dituntut memiliki sifat mekanik logam yang mampu menahan tegangan pada konstruksi bangunan maupun kapal, sehingga diperlukan proses tempering pada material pengelasan untuk menghilangkan tegangan sisa dan meningkatkan keuletan material. Tujuan penelitian ini adalah untuk mengetahui pengaruh variasi suhu tempering terhadap pengelasan baja SS400. Posisi pengelasan yang digunakan dalam penelitian ini adalah 1G dengan kampuh single V-Groove. Metode penelitian yang digunakan adalah experimen. Spesimen dibagi menjadi dua kelompok yaitu kelompok kontrol dan kelompok experimen. Kelompok kontrol berisi spesimen hasil pengelasan yang tidak diberikan perlakuan tempering. Kelompok experimen berisi spesimen hasil pengelasan yang diberikan variasi suhu tempering. Hasil pengujian tarik material menunjukan peningkatan tertinggi akibat pengaruh suhu tempering sebesar 541,195 MPa pada suhu 200°C. Penurunan tertinggi kekerasan material pada suhu 350°C sebesar 165,69 HV. Tumbuhnya butiran ferrit pada struktur mikro material juga mengindikasikan semakin uletnya material hasil pengelasan setelah dilakukan proses tempering. Hasil penelitian ini dapat digunakan sebagai alternatif cara untuk meningkatkan keuletan material hasil pengelasan khususnya pada baja SS400.
Rancang Bangun Mesin Pencetak dan Pemotong Briket dengan Sistem Elektro Pneumatik untuk UMKM Elvis Adril; Menhendry Menhendry; Daddy Budiman; Maheka Restu Araliz4; Ayu Pitri Yeni
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.17.1.1388

Abstract

Briquettes are an alternative fuel based on biomass waste which is available in very abundant quantities, one of which is coconut shell waste. The briquette processing process is generally still done manually. Therefore, a machine with automatic control using an electro-pneumatic system was built with the aim of avoiding product failure due to human error and this machine will be useful for UMKM. The working principle of this machine is to use a screw press for printing and electro-pneumatics for the cutting step. From the results of the design for this briquette printing and cutting machine, the briquettes produced have a diameter of 52 mm. This briquette printing and cutting machine uses a motor power of 0.75 HP and a rotation of 3500 rpm. The printer screw rotation speed is 28 rpm which is produced by using 2 inch and 5 inch pulleys and using a WPA 40 reducer gearbox with a ratio of 1:50. Meanwhile, for cutting using a sensor to detect the length of the briquette, it will then be cut by a plate connected directly to the pneumatic cylinder
Analisa Tegangan Maksimum Pada Desain Struktur Mesin Pengering Bekatul dengan Tebal 0.7 mm dan Variasi Material Menggunakan Metode Elemen Hingga Hendra Hendra; Dimas Maulana Putra; Dwinanto Dwinanto; Shofiatul Ula; Dhimas Satria; Mekro Permana Pinem; Mohamad Ana Syabana; Hamdan Akbar Notonegoro
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.17.1.1392

Abstract

Rice bran is one of the parts produced from rice milling, this part contains more than 20% dietary fiber. Rice bran has many useful substances, but its use is hampered by bran itself because it is easily damaged due to hydrolytic and oxidative activity. To overcome this problem, another method is needed so that the Bekatul can last longer. A drying machine is a machine used to reduce the air content in a substance. The aim of this research is to design the structure of a rice bran drying machine with various types of selected materials to obtain stress and cooling values. The method used in this research is finite element simulation. The materials varied in this research were AISI 304, Aluminum alloy 6061 and Galvalume Steel with thickness 0.7 mm. From the test results, it can be stated that all materials are safe to be used as the main material for making structure. However, there is one best material that produces the best maximum stress values and the smallest displacement, namely Galvalume Steel
Rancang Bangun Alat Ukur Torsi dan Putaran Untuk Pengujian Turbin Savonius Pada Wind Tunnel Berbasis mikrokontroler Ruzita sumiati; Uyung Gatot S. Dinata; Dendi Adi Saputra; Riswan Riswan; Fahri Triharyono; Rahil Abde Andika; Fharel Abdillah
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.17.1.1414

Abstract

The objective of this research is to design and develop a torque measurement device using a braking system and a rotational speed measurement tool for a Savonius turbine shaft, applied in a wind tunnel, with data acquisition controlled by an Arduino Uno microcontroller. The methodology employed in this research is the design and build method. The testing results indicate that the torque measurement device controlled by the Arduino Uno functions effectively. Comparing the results of braking force measurements using manual methods and data acquisition revealed a 2, 231 % error. Additionally, the rotational speed measurements using a tachometer and those using an encoder controlled by the Arduino Uno showed a small error of 0,59 %. Data were continuously monitored on a laptop screen during testing. Thus, this device can be utilized as an auxiliary measurement tool to assess the performance of a Savonius turbine
Pengujian Rusak Untuk Procedure Qualification Record Sambungan Kombinasi Las SMAW-FCAW Pada Material BS EN 10025 S355J2 Berdasarkan Standar AWS D1.1/D1.1M:2020 Rahman, Gulam Fazlur; Ariyanto, Nugroho Pratomo; Irawan, Benny Haddli
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1208

Abstract

PQR Qualification (Procedure Qualification Record) is an important part of welding. To ensures that the welding procedures used meet the quality requirements of the welding fabrication project. The purpose of this study was to determine the quality of welding and material thickness resistance attest coupon. One way to determine welding qualifications by means of this procedure is to use damage testing which is carried out on the material and welding until it is damaged and meets the set standards. This research will discuss PQR based on the AWS D1.1/D1.1M:2020 standard by requiring two tensile test specimens, two sets of scharpy v-notch (a set of three specimens), four side bend specimens and one macro specimen. The number and type of specimens are set in the AWS D1.1/D1.1M:2020 standard. Results of testing tensile obtained the difference in tensile strength between specimens 1st and 2nd specimens. The value obtained for tensile strength are 508 MPa and 515 MPa with 7 MPa of differences, but these results still with in the limits range of 470 to 630 MPa. Charpy impact testing obtained the results above required value of minimum 27 Joule. The surface bending test of the test specimen did not show any defect as well as in the macro testing. From the results of this tests, the quality of the welding and the thickness of the material can be determined.
Rancang Bangun Oven Pengasapan Ikan Asap Menggunakan Metode Rotary Novison, Roni; Nugraha, Nurcahya; Akhyan, Amnur
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1265

Abstract

Smoked fish has a high economic potential to be used as a business or to cook household food, so it is appropriate if this opportunity is developed by the community. One of the areas producing smoked fish is Kampar Regency. Based on the results of a survey conducted in the area of ​​the Koto Village Mosque (Kampung Patin) Kampar Regency, it was still found that the processing process carried out by the local community still uses traditional equipment, such as using rambutan wood as fuel and a fire stove placed outside the house during the smoking process, so that the temperature of the furnace combustion cannot be controlled properly and the quality of the resulting product is not good for large-scale production, because smoke and ash often stick to the fish meat, and the fish is not evenly cooked. One way that can be done to facilitate the process of making smoked fish is to create a smoking room that can inhibit heat energy by using a rotating system that can rotate. Small holes are also made in the iron pipe in the smoking room as a flow of smoke which aims to make the fish evenly cooked. The smoking process in the oven uses a rotating system or the fish will be rotated in the oven. This study was conducted in order to produce average smoking and this study includes the quality of appearance, odor quality, taste quality, texture quality, mushroom quality, and mucus. The smoking was carried out for 2 hours, 3 hours and 4 hours. The smoking oven was designed to have a smoke chamber capacity of 6 kg with a division of 1 kg / rack. The main part of the smoking oven machine is divided into two main parts including the smoke chamber and the combustion chamber. The smoke chamber has dimensions of 75 cm long, 50 cm wide and 120 cm high while the combustion chamber has dimensions of 100 cm long, 80 cm wide and 50 cm high. The best fish smoking results were obtained at a smoking time of 3 hours with an average fish shrinkage of 42.12%. This can be seen from the level of color and weight shrinkage.
Dampak Nilai Hardness berdasarkan Parameter Heat Input pada Proses Pengelasan GTAW untuk Material Superduplex Stainless Steel S32750 Irawan, Benny Haddli; Saputra, Ihsan; Ardiyansyah, M
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1363

Abstract

In this sophisticated era, the metal manufacturing process cannot be separated from welding process. Welding is a process of joining two metals using electrodes or filler metals which are commonly used in the world of fabrication and industry. Heat energy greatly affect the quality of the weld. Three parameter in heat energy is Ampere, Voltage and Heat input. The purpose of this study was to determine the effect of heat input to value of hardness on materials Superduplex Stainless Steel S32750 with GTAW process welding. The hardness of the material is very important to determine the resistance of a material. In the fabrication process threre are still material that have a hardness value that exceeds the standard value of the material manufacture. The welding process is carried out from root, hotpass, fill pass and capping with five variations of heat input to five the specimen of the test object, then do the hardness test with Vickers with a test kit portable UCI Sonodur 3. The hardness test carried out on weld metal, base metal and heat affected zone. From the analysis carried out with five variations of heat input and comparing the hardness values at each test location, a low heat input of 0.97 kJ/mm resulted in the highest average hardness value of 299.2 HV in the base metal area, the area exposed to heat (HAZ) of 265.9 HV, and the weld metal area of 229.5 HV. Based on this, it can be concluded that the hardness value in GTAW welding with low heat input has the highest hardness value compared to high heat input.
Identifikasi Cacat pada Proses Manufaktur Plastik Anti Bakteri menggunakan Mesin blown film Hendra, Hendra; Awang, Muhamad; Pinem, Mekro Permana; Satria, Dhimas; Nugraha, Kurnia; Septiana, Reski; Ekasari, Ekasari; Demustila, Harly; Hernadewita, Hernadewita; Hardian, Frengki
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1381

Abstract

One example of the current development of the plastic industry is Anti-Bacterial Plastic. Anti-bacterial plastic is a plastic that can store food well, even for a relatively long time compared to plastic in general. In the industrial world, companies are required to continue trying to find various ways and efforts to be able to compete with other companies that have the same business field. Defective products are products produced from a factory or industry where the product does not meet predetermined product quality standards. According to consumers, a good quality standard is if the product can be used according to consumer needs. However, if the product cannot be used according to consumer needs, then the product can be said to be a defective product. By analyzing defects in the antibacterial plastic manufacturing process, it can be useful to find problems that arise in the plastic packaging manufacturing process. The research method is carried out using a process of experimentation and measurement as well as checking defects visually. From the research results, three types of defects in anti-bacterial plastic products were found, namely eyelets, shrinkage and dimensional defects. These defects are characterized by spots on the plastic surface, wrinkles on the plastic surface, and dimensional differences in the plastic.
Pengaruh Jenis Biomassa dalam Proses Karbonisasi terhadap Efisiensi Burner Tipe GT40 Prayitno, Hadi; Dinata, Ragil Alvin; Amrul, Amrul; Kurniawan, Dondi; Nazarudin, Rizal; Saputra, Eko Wahyu
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1406

Abstract

The use of biochar as an organic fertilizer has gained significant attention in the agricultural field. Biochar application can enhance soil fertility and promote agricultural sustainability. Converting agricultural waste into biochar can reduce dependency on chemical fertilizers. Incorporating biochar into the soil improves water retention and nutrient availability. This study aims to evaluate the effect of biomass types (bromelain and bamboo) during the carbonization process on burner efficiency in biochar production.The study utilized bromelain biomass, bamboo biomass, and a mixture of the two at a 50% bromelain and 50% bamboo ratio. The raw materials were carbonized using a rotary drum reactor. The reactor operated with heat supplied by a High-Speed Diesel (HSD)-fueled burner. The carbonizer reached a maximum temperature of 600°C. In addition to biochar, the carbonization process also produced syngas, which was subsequently used to substitute HSD as a fuel source.The results indicated that the type of biomass significantly influenced burner efficiency during the carbonization process. Biochar derived from bamboo tended to have a higher cellulose content, whereas biochar from bromelain exhibited greater thermal decomposition stability. This study provides new insights into the potential of utilizing bromelain and bamboo biochar as sustainable strategies for agricultural soil management.The research demonstrated that biomass type selection during carbonization had a substantial impact on burner efficiency, which ranged from 81.15% to 84.45%. The HSD consumption of the burner was recorded at 35.03 kJ/hour. The use of biochar as an organic fertilizer offers an environmentally friendly and sustainable solution. Converting agricultural waste into biochar can serve as a strategic agenda for agricultural waste management.
Pembuatan dan Pengujian Pembangkit Listrik Tenaga MikroHidro (PLTMH) Turbin Turgo Erwanto, Eka; Ridwan, Abrar; Sunaryo, Sunaryo
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1470

Abstract

The construction and testing of a micro-hydro power plant (PLTMH) is one of the uses of water power sourced from irrigation channels of waste water from turbines located on the underground floor of the Koto Panjang PLTA, Kampar Regency. The construction and testing of a micro-hydro power plant by utilizing a small water discharge with the height of the irrigation channel as an energy source to rotate the turbine and generator. This study aims to increase lighting on the underground floor of the PLTA because on the lowest floor there are several points that do not yet have lighting, therefore the researcher made a micro-hydro power plant and tested how much power is obtained from the small water discharge. The study was conducted by measuring the water discharge so that it can be known how much voltage will be produced from the PLTMH that was made. The method used in this study is an experimental method, namely by making a micro-hydro power plant and testing it at that location. A micro-hydro power plant with a water discharge of 0.010 m3/s using a 12 Volt DC generator and an average turbine rotation of 243.0 Rpm can produce a voltage of 3,830 Volts. It can power one 3.8 Volt LED lamp with 2600 mAh.

Page 17 of 21 | Total Record : 204

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