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Jurnal Teknik Mesin

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Published by Institut Teknologi Padang

ISSN : 20894880 EISSN : 25988263 DOI : https://doi.org/10.21063/jtm

Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

JTM is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed. JTM is managed to be issued twice in every volume (April and October). The Scope of JTM is: Energy Science and Engineering Applied Mechanics and Materials Design, Manufacturing and Product Development Control, Instrumentation and Robotics

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 209 Documents

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Modification of Hand Molding Flower Vase for Thermo Plastic Recycling Karnova Yanel
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Broadly speaking, plastics can be grouped into two groups, namely: thermoplast plastics and thermoset plastics. Thermoplast plastics are plastics that can be repeatedly printed in the presence of heat. Thermoplast plastics include: PE (Polyethilene), PP (Polypropylene), PS (Polystirene), ABS (Abutile Butadine Styrene), Nylon, PET (Polyethilene Terephthalete), POM (Polyacetal), PC (Polycarbonate) etc. Meanwhile, thermoset plastic is plastic which, if it has undergone certain conditions, cannot be reprinted because the polymer structure is in the form of a three-dimensional network. In making flower vases using hand molding tools, there are still shortcomings, such as during the melting process of plastic material, the heat given by the oil stove has not yet maximally spread the heat to the mold which causes the results to be not optimal. Besides, the heat given by the oil stove is not yet known by the operator. , because in the manufacture of flower vases have not used a controller to determine the temperature in the hand molding tool, the old mold results in the cylinder cannot be used for tensile testing. Therefore it is necessary to modify the hand molding tool. Based on the results of testing the tools that have been done, the following conclusions can be drawn: The product has a height of 16 cm, a thickness of 4 mm, a hand-molding tool can be a solution for reducing waste in the environment, plastic can be formed into a product that is valuable by processing it according to the temperature.

Development of the Dynamic Signal Analyzer Based on Labview+Arduino to Identify Structure Dynamic Characteristics Asmara Yanto; Adriyan; Anrinal; Rozi Saferi
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

In this work, the dynamic signal analyzer (DSA) based on Labview+Arduino has been developed. The DSA is validated to acquire and analyze vibration of two degrees of freedom (2-DOF) structure as the test rig. Vibration signal generated by bump test method to the test rig. Vibrations of the test rig are measured by using micro-electro-mechanical system (MEMS)-based accelerometers. The measured vibrations are acquired and analyzed by using the DSA. In the DSA is used fast Fourier transform (FFT) method to obtain natural frequencies of the structure and half power point (HPP) method to estimate damping ratio of structure. From the testing was conducted can be concluded that the DSA capable to determine natural frequency and damping ratio of the 2-DOF structure. If the obtained results are compared to theoretically results, there are different results about less than 10%.

Torque and Power Testing of the Pelton Turbine Dedi Wardianto; Irwan Anwar; Afdal
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Energy sources that can be renewed in Indonesia according to Asean energy sources, one of which is microhydro that uses water as a source of energy from a turbine. The potential energy of water is converted into kinetic energy in the nozzles. The water coming out of the nozzle that has a high speed hits the turbine blade. After hitting the blade direction the flow velocity changes so that the momentum changes (impulses) so that the turbine wheel will rotate. Pelton Turbines are impulse turbines which consist of a set of road blades that are rotated by a jet of water sprayed from one or more devices called nozzles. Pelton Turbine is one of the most efficient and suitable types of water turbines used for high head and small flow discharge. Pelton turbines have several advantages including turbine efficiency which is relatively stable at various changes in flow discharge. The purpose of this writing is to find out and provide insight into the torque and power of the Pelton turbine and the effect on the valve openings that are varied.

The Effect of Circulation of 0.5% HCL Solution On the Corrosion Rate of Low Carbon Steel Ismet Eka Putra; Hasbi Ramdani
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Corrosion is usually called rusting. Corrosion in low carbon steel is carried out by the circulation method and without circulation. The specimens were placed in 0.5% HCl solution of 3 specimens in 1 vessel. The test specimens totaled 27 specimens in 3 vessels. In this study, low carbon steel immersion was carried out with circulation of 1200 L / H and 800 L / H and also without circulation with immersion times of 5, 10 and 15 days. The highest corrosion rate was obtained in low carbon steel soaked in 0.5% HCl for 15 days with a circulation of 1200 L / H which is 0.07357 mpy. The lowest corrosion rate was obtained in low carbon steel soaked in 0.5% HCl for 5 days without circulation, which is 0.02681 mpy.

The Influence of the Side Rake Angle of the Cut on the Flat Turning Process to Flank Wear of HSS Cutting Tool Anrinal; Asmara Yanto; Khairun Nizam
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

The purpose of this study is to provide an overview of the effect of the side rake angle in the medium carbon steel flat turning process on the flank wear of the HSS cutting tool. This research was conducted using a PL 1000 lathe, cutting speed (Vc) 24 m/min, cutting depth 0.25 mm, feeding motion 0.26 mm/r, using an HSS cutting tool with side rake angle variations (γo) 120, 180, 250. Flank wear was measured using the Toolmaker Microscope with an accuracy of 0.005 mm, a clearance of 25 mm, and a magnification of 15 times. The results showed that the increase in side rake angle in the medium carbon steel flat lathe process tended to result in an increase in the flank wear of the HSS cutting tool. The large side cutting angle (250) has the highest wear value of 0.55 mm. The lowest wear value occurs at an angle of 120 with a wear of 0.49 mm.

Overview of Variable Refrigerant Flow Air Conditioning System Arfidian Rachman
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Variable refrigerant flow air-conditioning (VRF) systems are important and widely used in building energy systems around the world. The system is gradually gaining popularity in commercial and residential buildings due to its satisfactory partial load performance, flexible control, ease of installation and maintenance. Variable refrigerant flow air-conditioning (VRF) is a multi-split Heating, Ventilation and Air Conditioning (HVAC) system that controls refrigerant flow to control separate zones for the needs of residential consumers and commercial buildings. The objective of this review is to identify VRF systems that affect various aspects of operation and performance. Special VRF components regulate refrigerant volume control for system performance and reliability. The findings show that specific testing through different compressor settings, electronic expansion valve (EEV) position, and airflow operation affects performance, thermal comfort and potential energy savings. The main conclusions drawn from this detailed review provide a comprehensive overview of VRF and inspire new insights and viable solutions for relevant researchers, product developers, practitioners and policy makers in this field. Previous experimental investigations will be more helpful in the future direction of progress as the development of an extensive VRF system is still in the main stages.

Product Design Evaluation of Scooter 2 Pedal with Quality Function Development Method Rozi Saferi; Asmara Yanto; Muhammad Ilhamdi
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

A scooter is defined as a two-wheeled vehicle with a step-through chassis and footrest platform. There are several factors that must be considered in planning and designing this scooter including an attractive design, selection of the right material, analysis of material strength, ergonomics factors and others. The purpose of this research is to design a 2 pedal scooter and evaluate the design results using the quality function development (QFD) method. The results of the evaluation of the 2-pedal scooter product design with the quality function development method show that the highest stress occurs at a load of 90 kg with a displacement of 6.11 mm and is still safe to use. Furthermore, the design of the 2-pedal Scooter is better than otoped in terms of the transmission system and ergonomics and is better than commercial scooters in terms of weight.

The impact of a Fuel mixture On Matic Motorbike Performance Marfizal; Fadli Nur Permadi
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

The research conducted in this paper is related to testing the performance of a 4-stroke engine using Pertamax, Pertalite and Pertalite 50% Pertamax 50% fuel. The test was carried out by varying the power from 5000 to 8000 rpm. The performance that will be compared from the three types of fuel is acceleration, speed, power and torque. Tests were carried out using Super Dyno 50L. The results of this test are used to compare the performance of the three types of fuel. In this study, it was found that the use of Pertamax on the Pertamax 4 stroke engine had performance in Pertalite and a mixture of Pertamax usage 50% Pertalite 50%. Judging from its performance for Pertamax, the acceleration value is 0.26% to 0.01%, the speed ranges from 0.54% to 45%, the higher power is 1.82% to 24.04 %, greater torque 6.65% to 25.67%. In general, it can be concluded that Pertamax has a better performance then followed by a mixture of Pertalite 50% Pertamax 50%.

An Application of Decission Tree for Modeling the Direct Kinematic Solution of 5R Planar Parallel Manipulator Adriyan Adriyan
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

This article addressed a machine learning approach for determining a solution model for the direct kinematic problems of parallel manipulators. A 5R planar parallel manipulator was utilized for that approach because it had the solution in the closed form. Initially, a dataset was created from an inverse kinematic solution of the manipulator for one of its assembly modes. Then, this dataset was fed as the input (the joint space) and the output (the platform space) for modeling the direct kinematic solution of the manipulator using one of the machine learning algorithms, which was the decision tree. To avoid overfitting during the training, hyperparameter tuning was employed to find the best parameters for the decision tree model, which was later called the best model. Hence, the best model can be validated by using the closed form solution. If the best model failed to model the direct kinematic solution in the validation, remodeling had to be performed and executed the same steps again. For remodeling, the training dataset consisted of all assembly modes of the manipulator. Consequently, the best model after remodeling was able to present the direct kinematic solutions for all possible input domains. Unfortunately, around 5% of solutions shown a higher deviation which had to be investigated in the future.

Design of a Semi-Inverse Taper Horizontal Blade Wind Turbine and Its Potential use at Gajah Beach Padang Putri Pratiwi; Frizky Yurian
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

The development of the use of wind energy to produce electrical is still quite attractive, especially in developing country such as Indonesia. Padang City is an area located on the west coast of Indonesia and is influenced by west, southwest, northwest winds with low wind with speeds ranging from 2 m/s to 10 m/s. The purpose of this research is to design a blade that can rotate in that speed range. The blade designed is a semi-inverse taper with a chord ratio of 1:1,3, the length of the blade is 90 cm. The design showed that the highest peak was found at 51% at TSR 4.5. Assuming a maximum generator speed of 500 rpm and the range of wind speeds from 1 m/s to 12 m/s, it is known that the blades begin to rotate at 2.1 m/s, the maximum power is 1324 Watts when the wind speed is 12 m/s

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Mastariyanto Perdana

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jurnalteknikmesin.itp@gmail.com

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+6285263327529

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jurnalteknikmesin.itp@gmail.com

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https://jtm.itp.ac.id/index.php/jtm/about/editorialTeam

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Kota padang,

Sumatera barat

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Mastariyanto Perdana

Contact Email jurnalteknikmesin.itp@gmail.com

Phone +6285263327529

Journal Mail Official jurnalteknikmesin.itp@gmail.com

Editorial Address https://jtm.itp.ac.id/index.php/jtm/about/editorialTeam

Location Kota padang, Sumatera barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Mastariyanto Perdana

Contact Email
jurnalteknikmesin.itp@gmail.com

Phone
+6285263327529

Journal Mail Official
jurnalteknikmesin.itp@gmail.com

Editorial Address
https://jtm.itp.ac.id/index.php/jtm/about/editorialTeam

Location
Kota padang,

Sumatera barat

INDONESIA