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INDONESIA
JURNAL TEKNIK MESIN
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 2 Documents
 1 
Search results for , issue "Vol 1, No 2 (2013): VOLUME 1, NOMOR 2, APRIL 2013" : 2 Documents clear
Optimasi Gripper Dua Lengan dengan Menggunakan Metode Genetic Algorithm pada Simulator Arm Robot 5 DOF (Degree of Freedom) Andy Rahmawan; Munadi Munadi; Toni Prahasto
JURNAL TEKNIK MESIN Vol 1, No 2 (2013): VOLUME 1, NOMOR 2, APRIL 2013
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1116.411 KB)

Abstract

An arm robot simulator 5dof (degree of freedom) which is equipped with a two-finger gripper is designed to determine the movement of the robot manipulator. To make an arm robot simulator, we used acrylic as a base material, servomotor as a driver and an Arduino Uno SMD as microcontroller. Acrylic was chosen because it is light, strong and durable. Arduino Uno SMD was chosen because it can interact with LabVIEW that will be able to control the movement angle of servomotor manually. The purpose of this final project is to make an arm robot simulator 5 dof which equipped a gripper and optimization of two finger gripper configuration use one of optimization techniques, the genetic algorithm optimization. For making the link of simulator, we use the acrylic laser cutting machine to be more precision cutting. Servomotor’s movement is controlled by using a program that was created using LabVIEW. Servomotor’s angle position error was corrected by using program functions of numerical multiply and numerical divided on LabVIEW. Optimization of gripper configuration using MATLAB software as a tool for the calculation. A genetic algorithm optimization used the default parameters, then the calculation result are always different. All the results of these calculations are correct and it affects the shape of the gripper configuration at zmax. Then the torque of gripper before optimized and after optimized can be obtained.
ANALISIS STRUKTUR MIKRO DAN SIFAT MEKANIS HASIL LAS TITIK DAN BRAZING UNTUK INDUSTRI RUMAHAN Deivandra Ginanjar Bhakti; Gunawan Dwi Haryadi; Yusuf Umardani
JURNAL TEKNIK MESIN Vol 1, No 2 (2013): VOLUME 1, NOMOR 2, APRIL 2013
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1016.063 KB)

Abstract

In the welding process there are several factors that determine the success of welding. The alteration of microstructure of joined metals are expected to change the structure of the material into more dense to make connections become stronger. In this study, the material used is ferrous steel plate with a maximum thickness of 1mm. In order to know the results, It required to use some variation of a parameter such as pressing time and plate thickness used for metal welding process. The process used home brazing welding machine, the connections are welded and welding receive local heat and during the process the temperature is constantly changing so that the temperature distribution is uneven. As a result of this stretch then analyzed the results of the micro structure of the welding process using brazing home welding machine. After analysis of the microstructure was done then analyze the mechanical properties of the weld joint, all this analysis needs to be done in order to ascertain the connection is really strong welds and brazing machine can be used for home-scale cottage industry.  The results of this study indicate that nugget on hardness Vickers test has a value higher than of the base metal which is 172.78 for 8.6 A current and welding time 20 second 191.58 for 6 A current and welding time of 10 second, and the value of base metals 165.7 so percentage obtained with increasing force to the current value of 8.6 A is 7.1 % and for the current 6 A 25.8 %

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