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Redaksi Quantum Teknika, Gedung D Lantai Dasar Kampus Terpadu Universitas Muhammadiyah Yogyakarta, Jl. Brawijaya, Tamantirto, Kasihan, Bantul, DI Yogyakarta, 55183
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Quantum Teknika
Published by Universitas Muhammadiyah Yogyakarta
ISSN : -     EISSN : 27211932     DOI : 10.18196
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Quantum Teknika : Jurnal Teknik Mesin Terapan or Quantum Teknika is a peer-reviewed journal published by Universitas Muhammadiyah Yogyakarta. Quantum Teknika journal publishes twice a year in April and October. Mechanical engineering is a branch of engineering focusing on mechanical engineering research. Despite of that, the development of the mechanical engineering does not solely encompass machinery science but also other machine-related field such as the automotive science which is composed of energy conversion, design and the forming materials. Quantum Teknika journal accommodates these fields in order to spark various innovations in Indonesia. In the journal Quantum Teknika, accommodate these fields in this period, the year of innovation began in Indonesia. - Automotive Research - Research in The Field of Energy Conversion - Materials Engineering - Design and Manufacture
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 12 Documents
 1   2 
Search results for , issue "Vol 1, No 1 (2019): October" : 12 Documents clear
Pengaruh Penambahan Unsur Titanium-Boron (Ti-B) 0,1% dan 0,5% Terhadap Nilai Kekerasan Paduan Alumunium Wisnujati, Andika; Shomad, M. Abdus
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010105

Abstract

This study discusses the composition of the material contained in the used piston material and compares the strength value of each variation of Ti-B percentage by violence testing. The method used in metal casting is Gravity Casting which uses only gravity of the earth. In the manufacture of this recycled piston includes several stages of the process of working method with Sand Casting mold and its test. Among them are pattern planning, raw material preparation, pattern making, pasri printing, mold making with CO2 gas, aluminium metal smelting, Ti-B input into melt kitchen, casting of liquid metal, casting specimen and final process. The result of composition testing of main alloy material is 84,19 % Al and 10,8306 % Si. The result of hardness testing with gravity casting method on the percentage of Ti-B 0,1% and 0,5% using sand casting mold have hardness number 52,62 VHN and 71,76 VHN. The percentage of addition of Ti-B element greatly affect the mechanical properties of the material, so that more Ti-B element, then the material will have hard mechanical properties
Proposed Improvement to Minimize Motion Waste in Production of Head Casing Part at PT. Multi Instrumensi With Lean Manufacturing Approach Pratama, Williardy; Yanuar, Agus Alex; Rendra, Meldi
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010106

Abstract

PT. Multi Instrumentasi is a manufacturing company that produces water meters. In producing water meters, one of the parts is the head casing. Head casing part consists of two types namely LF-1 and LF-2. Constraints experienced by companies are the inaccessibility of head casing production targets that can hinder the sale of water meters to consumers. For this reason, a proposal to improve the lean manufacturing approach is proposed to minimize the waste that occurs. The stage of the lean manufacturing approach is to identify the production process that occurs using the Process Activity Mapping and Value Stream Mapping. Furthermore, identifying waste that occurs using fishbone diagrams. After identifying waste, waste motion is found in the process of making the head casing part with manual lathes. Subsequently, proposed improvements were made using the Single Minutes Exchange of Die (SMED) method. After the proposed improvement, the company's profitability can be calculated by comparing the existing production costs after the proposed improvements. 
Studi Eksperimental Pengaruh Perbedaan Sudut Kemiringan Terhadap Temperatur Onset Termoakustik Generator Gelombang Berdiri Agistya Anugrah, Rinasa
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010101

Abstract

Thermoacoustic generator ia one of energy conversion device that change thermal energy to acoustic form energy. This device can get many beneficial of thermal energy which banned and not be used again from industry, devices of the hospitals, geothermal, and solar energy. The device consist or two type, standing wave and traveling wave. In the research used a standing wave thermoacoustic generator because of the cost is relatively cheaper and the construction is easy to set than traveling wave type. Onset temperature is one of the most important parameter in thermoacoustic generator to be researched. In that aplication, onset temperature can representated how many the performance of this device, if seen by input energy used the system of the thermoacustic generator. Decreasing onset temperature could make  decrease of thermal energy used to generator. Beside stack and resonator length, the other parameter that more important to research is tilted angles. In this researched would be done researched with variation of tilted angles -90º, 0º, dan 90º. It would be found the effective tilted angle used, the performance was presented by the least onset temperature. The result was the tilted angle decreased when the onset temperature decreased too. If seen by the input energy, the best performance of thermoacoustic generator is on 90o tilted angle.
Perancangan Kursi Untuk Memperbaiki Posisi Kerja Guna Meningkatkan Produktivitas Studi Kasus di PG Jatibarang Brebes Sokhibi, Akh; Rachmawati, Putri
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010107

Abstract

PG. Jatibarang Brebes is the first company directly under the BUMN (Badan Usaha Milik Negara)  company. this is company produces sugar of Central Java region which is under PTPN IX. There are six stages in the process of producing sugar, namely the milling stage, purification stage, evaporation stage, crystallization stage, the stage of rotation and finishing. The last activity is the packaging of sugar into the sack of 50 kg carried by the operator who sits on a sack with irregular heights. Seen from the aspect of ergonomic seating position is not very suitable because sugar packaging operators work in an uncomfortable position. Therefore, it is necessary to design seats for ergonomic sugar packaging operators. The method used to design this chair is with the concept of ergonomics. The required data include anthropometric data of operator body size, operator complaint during work, packaging process time during work. Then the data is processed to be applied to the design. The design is a prototype which will be measured and compared the output results in the conditions before and after the design was applied. The standard of production output was increased from 384,6 sacks/hour to 454.5 sacks/hour (18,17%) after the new design chair has been applied.
Pengaruh Tegangan Permukaan Terhadap Tumbukan Multiple Droplets Pada Permukaan Stainles Steel Yang Dipanaskan Arizona, Rafil
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010102

Abstract

The present study was conducted to investigate the dynamics of multiple droplets impact under various surface tensions. Here, the ethylene glycol with compositions of  0%, 5%, and 15% were injected through a nozzle into the stainless steel surface as the multiple droplets. The solid surface was heated at the temperatures of 150ºC. The dynamic of multiple droplets have been observed with frame rate of 2000 fps by a high speed camera. A technique of image processing was developed to determine the maximum droplets are spreading ratio. As the result, the surface tension contribute to the maximum spreading ratio significantly. When the droplet surface tension decreases, the maximum spreading ratio increases. The maximum spreading ratio appears when the percentage of the ethylene glycol is 15% at the temperature of 150ºC. From the visual observation, it was shown that a slower emergence of secondary droplets (droplet splashing) was carried out under low surface tension.
Pengaruh Tekanan Kompresi Terhadap Daya dan Torsi Pada Engine Single Piston Purnomo, Bagiyo Condro; Munahar, Suroto
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010103

Abstract

LPG is an alternative fuel as fuel oil (BBM) which has a higher octane and energy value compared to BBM, and produces lower exhaust emissions. However, engine performance has decreased. This research presents an analysis of the performance of a single piston 4-stroke LPG engine with changes in compression pressure. Tests were carried out to determine the power and torque with variable pressure compression of  9 bar, 9.5 bar and 10 bar. The test results show that a single piston 4-stroke LPG engine with 9 Bar compression pressure produces a maximum torque of  9.77 Nm at 3380 rpm and a maximum power of 6.7 HP at 5870 rpm. Whereas the 10 Bar compression pressure produces a maximum torque value of 10.79 Nm at 3689 rpm and a maximum power of 6.9 hp at 5936 rpm. The conclusion of this research is that the higher the engine compression pressure, the higher the thermal efficiency in the combustion chamber so that engine performance increases
Karakterisasi Bahan Kampas Rem Sepeda Motor Dari Komposit Serbuk Kayu Jati Yudhanto, Ferriawan; Dhewanto, Santo Ajie; Yakti, Suluh Widya
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010104

Abstract

Commonly the prime material for brake pad of the commercial motorcycle using asbestos, these materials cause a disease like as cancer of respiration if the abrasive particles were sniffed. The SKJ (Serbuk Kayu Jati) brake pad is alternative to replacement the asbestos brake pads. The mechanical test includes a wear test, hardeness test, friction coefficient test, and heat resistant test. The hot press process for SKJ as main material of brake pad based by variation of temperature there are 160ºC, 170ºC, and 180ºC. The optimum test result of SKJ brake pads is a variation of 180ºC with wear test result is 3,36 x 10-7 mm2/kg, the hardeness result is 25,1 BHN, the friction coefficient test is 0,59 and not damaged on the heat resistant test with a temperature of 300ºC during an hour.
Pengaruh Penambahan Unsur Titanium-Boron (Ti-B) 0,1% dan 0,5% Terhadap Nilai Kekerasan Paduan Alumunium Andika Wisnujati; M. Abdus Shomad
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010105

Abstract

This study discusses the composition of the material contained in the used piston material and compares the strength value of each variation of Ti-B percentage by violence testing. The method used in metal casting is Gravity Casting which uses only gravity of the earth. In the manufacture of this recycled piston includes several stages of the process of working method with Sand Casting mold and its test. Among them are pattern planning, raw material preparation, pattern making, pasri printing, mold making with CO2 gas, aluminium metal smelting, Ti-B input into melt kitchen, casting of liquid metal, casting specimen and final process. The result of composition testing of main alloy material is 84,19 % Al and 10,8306 % Si. The result of hardness testing with gravity casting method on the percentage of Ti-B 0,1% and 0,5% using sand casting mold have hardness number 52,62 VHN and 71,76 VHN. The percentage of addition of Ti-B element greatly affect the mechanical properties of the material, so that more Ti-B element, then the material will have hard mechanical properties
Proposed Improvement to Minimize Motion Waste in Production of Head Casing Part at PT. Multi Instrumensi With Lean Manufacturing Approach Williardy Pratama; Agus Alex Yanuar; Meldi Rendra
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010106

Abstract

PT. Multi Instrumentasi is a manufacturing company that produces water meters. In producing water meters, one of the parts is the head casing. Head casing part consists of two types namely LF-1 and LF-2. Constraints experienced by companies are the inaccessibility of head casing production targets that can hinder the sale of water meters to consumers. For this reason, a proposal to improve the lean manufacturing approach is proposed to minimize the waste that occurs. The stage of the lean manufacturing approach is to identify the production process that occurs using the Process Activity Mapping and Value Stream Mapping. Furthermore, identifying waste that occurs using fishbone diagrams. After identifying waste, waste motion is found in the process of making the head casing part with manual lathes. Subsequently, proposed improvements were made using the Single Minutes Exchange of Die (SMED) method. After the proposed improvement, the company's profitability can be calculated by comparing the existing production costs after the proposed improvements. 
Studi Eksperimental Pengaruh Perbedaan Sudut Kemiringan Terhadap Temperatur Onset Termoakustik Generator Gelombang Berdiri Rinasa Agistya Anugrah
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010101

Abstract

Thermoacoustic generator ia one of energy conversion device that change thermal energy to acoustic form energy. This device can get many beneficial of thermal energy which banned and not be used again from industry, devices of the hospitals, geothermal, and solar energy. The device consist or two type, standing wave and traveling wave. In the research used a standing wave thermoacoustic generator because of the cost is relatively cheaper and the construction is easy to set than traveling wave type. Onset temperature is one of the most important parameter in thermoacoustic generator to be researched. In that aplication, onset temperature can representated how many the performance of this device, if seen by input energy used the system of the thermoacustic generator. Decreasing onset temperature could make  decrease of thermal energy used to generator. Beside stack and resonator length, the other parameter that more important to research is tilted angles. In this researched would be done researched with variation of tilted angles -90º, 0º, dan 90º. It would be found the effective tilted angle used, the performance was presented by the least onset temperature. The result was the tilted angle decreased when the onset temperature decreased too. If seen by the input energy, the best performance of thermoacoustic generator is on 90o tilted angle.

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