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Jurnal Teknik Mesin
Published by Institut Teknologi Padang
ISSN : 20894880     EISSN : 25988263     DOI : https://doi.org/10.21063/jtm
Core Subject : Science, Engineering,
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 243 Documents
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Microstructures Changes in Aluminum 6061 Due To Oxidation before MMAW Welding Anrinal; Asmara Yanto; Rahmad Hidayat
Jurnal Teknik Mesin Vol 10 No 1 (2020): Jurnal Teknik Mesin Vol.10 No.1 April 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i1.6-15

Abstract

This work aims to provide an overview of the changes in the microstructure of Aluminum 6061 because it was oxidized prior to MMAW welding. The research was conducted by first allowing aluminum 6061 to oxidize in the air (atmosphere) with a time variation of 0, 120, and 240 hours. The MMAW welding process uses a 1G welded seam without a 1G position, Grilumin 14 electrode, AWS A5.3-99 specifications, E4043 3.2 mm in diameter, with a DC current of 90 Amperes. The welding results show that the weld surface appears sooty and rough spots where the longer the oxidation occurs produces more soot and spots, while the results of the microstructure examination on the weld area and the HAZ area show that the micro structure of the weld area and the HAZ area experiences increased grain size.
Exergy Study of Steam Flash Cycle & Kalina Cycle at Waste Heat Recovery Power Generation Operation System Arfidian Rachman; Benny Arianto
Jurnal Teknik Mesin Vol 10 No 1 (2020): Jurnal Teknik Mesin Vol.10 No.1 April 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i1.16-32

Abstract

Waste Heat from cement kiln factories has begun developed to power generation in the world. Waste Heat Recovery Power Generation (WHRPG) is the one of power generation with use hot gas from cement kiln to increase water temperature in After Quenching Cooler (AQC) & Preheater (SP) Boiler, and change water into superheated steam stage. Superheated Steam will delivery in to turbine and drive the generator. The quality of hot gasses will affect the turbine work and power generator. The temperature of hot gasses frequently at below 340°C. It will cause turbine not work in optimally condition. This research done for study using ammonia – water on kalina cycle at WHRPG to resolve the problem in WHRPG. From this study found that value of total exergy destruction at Steam Flash Cycle is 19,97 MW with power generator 7,011 MW. While at kalina cycle, total exergy destruction the kalina cycle is 18,33 MW with power generator at 8,459 MW.
The Effect of Electrode Moisture and Polarity On SMAW Welding of Low Carbon Steel Hafni Hafni
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2021.v11.i1.80-85

Abstract

Welding using moist electrodes and the choice of polarity is expected to affect the defects that usually arise in the welding results of ST 37 low carbon steel. To find out how big the influence of electrode humidity and polarity on defects in low carbon steel welding results, a study was carried out using fluid as an electrode moisturizing element. The electrode humidification process is carried out by allowing the electrodes to be contaminated by humidity for 3 days, 6 days and 9 days, before welding the base metal. After welding with these electrodes, metallographic testing is carried out to observe the macrostructure and microstructure of the welding results. From the test results, it is found that the humidity of the electrode does not affect the defects that arise in the welding results of low carbon steel as long as it does not damage the flux of the electrode.
Android-Based Control System of Lawn Mower Using Bluetooth Connection Asmara Yanto; Anrinal; Prasetyo Subekti
Jurnal Teknik Mesin Vol 10 No 1 (2020): Jurnal Teknik Mesin Vol.10 No.1 April 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i1.33-40

Abstract

The purpose of this research is to build and test the android-based control system of lawn mower using bluetooth connection. The lawn mower has 4 DC motor actuators, where a DC motor for moving the rear wheels that serves to move the lawn mower back and forth, a DC motor to drive the front wheels that serves to turn the lawn mower, a DC motor to adjust the cutting blade elevation and a DC motor for turning the cutter blade. The four DC motors are controlled by Arduino. The command or input to control the motion of the mower is sent via android with bluetooth connection to arduino. The lawn mower control system testing is carried out to cut the grass. From the tests was conducted, it can be concluded that the lawn mower control system works well.
The Application of Rapid Upper Limb Assessment (RULA) for Designing a Lab-scale Flexible Conveyor Basirun Chaniago; Sufiyanto Sufiyanto; Lilia Trisyathia Quentara
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2021.v11.i1.86-94

Abstract

The limited area of laboratory space (3000 x 3000 mm) triggered the importance of designing a flexible conveyor to support practicum activities. The process design of flexible conveyor consist of 1) Planning and preparation of product specifications; collection of product ideas based on needs and material selection. 2) Designing concepts; product dimensions with anthropometric data approach eg. elbow height, forward knee height and hand grip distance. 3) Product design; schemes or sketches that are developed into products or technical objects. 4) Pictures and specifications of product manufacture; complete review of all product elements with geometry, dimensions and material. The Rapid Upper Limb Assessment (RULA) method is used to analyze product function by investigating disorders of the upper limbs consisting of group A; upper arm, forearm, wrist, and wrist rotation, then group B; neck, torso, and feet, which are measured by the degree of injury risk. From the anthropometry approach a flexible conveyor specification was obtained with a length of 2000 mm, a width of 610 mm, a minimum height of 544 mm, and a maximum height of 957 mm. The results of the final score assessment of the standing posture and sitting position that the RULA action category is 4, with a small level of risk and for action to take some time to come.
Design of PID Control System for Liquid Surface Height Using Root Locus Method IskandarAzis
Jurnal Teknik Mesin Vol 7 No 1 (2017): Jurnal Teknik Mesin Vol.7 No.1 April 2017
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2017.v7.i1.1-13

Abstract

Control of the liquid surface height at a plant requires a system of control. The design of the control system requires a method of completion for height control system capable of controlling the liquid level remains stable at the desired level, namely the level of 8 and 10. The purpose of this research is to design a control system on a high surface of the liquid with PID control and implement methods of Root Locus. In this study, the liquid surface height of plant to be controlled ie MISO plant with two tanks. Root locus method has been able to control the high liquid level in the tank 1 with PID control parameters Kp = 58.27, Kd = 0.5. While high liquid level in the tank 2, PID control parameters are Kp = 75.7, Kd = 5. High surface of the liquid in the know stabilized by providing high varisi disruption of the liquid surface is high melibihi SP and under high-SP into PID control system.
Designing and Manufacturing of Meat Grinding and Meatball Dough Blending Machine Romiyadi; Indah Purnama Putri
Jurnal Teknik Mesin Vol 7 No 1 (2017): Jurnal Teknik Mesin Vol.7 No.1 April 2017
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2017.v7.i1.14-18

Abstract

The purpose of the study was to design and manufacture of meat grinding and meatball dough blending machine with a capacity of 6 kg. In this study, researchers add more functions on meat grinding to meatball dough blending machine. From the process of designing and manufacturing, has produced a meat grinding and meatball dough blending machine with a capacity of 6 kg for a process. The machine uses a electric motor with a power of 0.25 HP. Based on the test results, meat grinding and meatball dough blending machine was able to meat grinding and meat ball dough blending and has efficiency of 96 % for the meat grinding process and 95 % for the meatball dough blending process.
The Effect of Rambutan’s Leaf Extract Inhibitor on Corrosion Rate on Cast Iron Block Car Sedan Nissan in HCl Solution 1% Ismet Eka Putra; Pren Tanjung
Jurnal Teknik Mesin Vol 10 No 1 (2020): Jurnal Teknik Mesin Vol.10 No.1 April 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i1.41-45

Abstract

Corrosion in cast iron can be overcome by rambutan counter measures (Nepheliumlappaceum.L). The object of the study which is placed in 1% HCl solution each of 3 specimens in 1 vessel. 12 specimens in 4 vessels. In this study, soaking iron cast iron car block Sedan Nissan without inhibitor and the variation of inhibitor 5%, 10%, and 15% with immersion time 5, 10, and 15 days. The solution is coincides with 0.095 m3/hr of passage in a vessel with a volume of 1% 900 ml of HCl. The highest corrosion rate in cast iron soaked in 1% HCl without using rambutan leaf extract and immersion time of 15 days is 0,075054 mpy. The lowest corrosion rate in cast iron soaked in 1% HCl solution using 15% rambutan leaf extract and a 15 day immersion time of 0,025863 mpy.
AFR Modeling of EFI Engine Based on Engine Dynamics, Vehicle Dynamics, and Transmission System Suroto Munahar; Muji Setiyo
Jurnal Teknik Mesin Vol 7 No 1 (2017): Jurnal Teknik Mesin Vol.7 No.1 April 2017
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2017.v7.i1.19-28

Abstract

During this time, the AFR control systems on the Ligh Duty Vehicles (LDVs) generally only engage the engine condition, such as manifold pressure, engine speed. In fact, fuel consumption is not only influenced by the engine dynamics but also influenced by outside factors such as gear position (transmission) and vehicle speed. Therefore, this paper presents a simulation to control the Air to Fuel Ratio (AFR) on Electronic Fuel Injection (EFI) engine that accommodated engine dynamics, vehicle speed dynamics, and gear position dynamics (transmission). Fuzzy Logic Controller (FLC) was selected for AFR modeling because of the engine work in a non-linear condition. The simulation results show that the model developed is able to control the AFR on the vehicle speed changes. Even, the system is able to perform fuel cut-off at the time of deceleration from high speeds.
Modeling and Simulation of a Rotary Quadruple Pendulum System Using Scientific Python Stacks and Modelica Language Adriyan
Jurnal Teknik Mesin Vol 7 No 1 (2017): Jurnal Teknik Mesin Vol.7 No.1 April 2017
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2017.v7.i1.29-37

Abstract

This paper presented the modeling and simulation of a rotary quadruple pendulum (RQP) system using two open source software, i.e: scientific python stacks (SciPy stacks) and Modelica language via Anaconda python distribution and OpenModelica, respectively. The modeling stage using SymPy (a package of SciPy stacks) was conducted to obtain the governing equation in full symbolic form by applying Lagrange’s method. The listing code is also provided to test by the user later on. Meanwhile, both modeling and simulation were performed in Modelica language by addressing several conditions concerning the initial conditions of the system, i.e: examining up-up-up-up, up-up-down-down, and up-down-up-down conditions. Simulation required the numerical values of the RQP system be supplied before running the simulation. In conclusion, the derivation of the governing equation using SymPy can be done in a matter of minutes without having a mistake when doing the algebraic manipulation. Simulation using OpenModelica was present the response of the RQP system in three conditions that considered initial conditions imposed to the system. The model obtained through this research can be used a baseline for developing a control scheme for the RQP system in its inverted position.

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