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All Journal Jurnal Pendidikan Teknologi dan Kejuruan APTEKINDO Rekayasa Mesin Jurnal Inovator J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Otopro Jurnal Pendidikan Teknik Mesin Undiksha Quantum Teknika Indonesian Values and Character Education Journal International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Nusantara of Engineering (NOE) Journal of The Indonesian Society of Integrated Chemistry
I Nyoman Pasek Nugraha
Universitas Pendidikan Ganesha
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Journal : Quantum Teknika

 1 
Analisis Pengaruh Bentuk Slidding Roller Terhadap Torsi dan Daya Kendaraan Berbasis Continously Variable Transmission Wijaya, Dedik Ananta; Dantes, Kadek Rihendra; Pasek Nugraha, I Nyoman
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 2, No 2 (2021): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v2i2.10788

Abstract

This study aims to determine the ratio of power and torque on an automatic motorbike using two different rollers, namely a cylindrical roller with a sliding roller with a weight of 12 grams each. The method used in this research is the experimental method. The testing and retrieval process carried out at the Gede Widi Motor workshop, and data collection was carried out five repetitions for each variation. After testing, there are differences in torque and power on the cylinder roller with roller sliding. The cylinder roller reaches the highest torque of 7.6 Nm at Rpm 4000. The highest power is 7.46 Hp at Rpm 7000, while in roller sliding, the highest torque is 11.82 Nm at Rpm 4000 and the highest power 7.56 Hp at 7000 RPM.
Pengaruh Variasi Insulator Saluran Chilled Water Terhadap Performansi Prototype Mini Water Chiller Buddhi Satya Utama; I Nyoman Pasek Nugraha; I Gede Wiratmaja
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 1 (2021): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i1.12264

Abstract

The high heat transfer rate from the environment to the chilled water pipe will affect the performance of the mini water chiller prototype, so it is necessary to insulate the chilled water pipe using the right insulator to optimize the performance of the mini water chiller prototype. Therefore, this study aims to determine the effect of the chilled water pipe insulator variations: nitrile rubber expanded and polyurethane foam on the optimal temperature and cooling rate of the mini water chiller prototype cabin. The method used in this study is an experimental method with a variation of the insulator as independent variables and the optimal temperature also cooling rate of the mini water chiller prototype cabin as the dependent variables. The testing process was carried out 20 times repetition of data collection on each variation using a stopwatch, thermo gun, thermostat, ampere pliers, a bulb, and a water heating element as a tool in research. In addition, it expanded nitrile rubber and polyurethane foam spray as research material. The results obtained from this study showed that the average optimal temperature achievement of the mini water chiller prototype with polyurethane foam insulator was 11.242◦C, and with the nitrile rubber expanded insulator was 11.250◦C. Otherwise, the average cooling rate of the mini water chiller prototype cabin with polyurethane foam insulator variation was 0.001421◦C, while in the variation of nitrile rubber expanded it was 0.001032◦C, which indicates that there is an effect of chilled water pipe insulator variations on the performance of the mini water chiller prototype.
Analisis Unjuk Kerja Prototype Trainer Lemari Pendingin dengan Variasi Beban Pendinginan Arifudin, Andi; Wiratmaja, I Gede; Pasek Nugraha, I Nyoman
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 1 (2021): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i1.12225

Abstract

This study aimed to find the effect of variations in cooling load on the performance of the prototype trainer refrigerator, which in this refrigerator prototype had never been tested performance. In this study, the experimental method was used. The values sought in this study were the rate of room cooling and the Coefficient of Performance (COP). In this study, the variation of the cooling load used started from temperatures of 300, 350, 400, 450 oC, with 15 repetitions, and the temperature performance used was 1000C. The study results showed that the highest room cooling rate occurred at 300 oC cooling load variation, namely 0.00265, and the smallest room cooling rate occurred at 450 oC cooling load variation, namely 0.00174. The highest Coefficient of Performance (COP) results occurred at a cooling load variation of 450 oC, namely 34.09, and the lowest Coefficient of Performance (COP) occurred at a cooling load variation of 300 oC, namely 29.60. From these results, it can be concluded that the cooling rate of the room was inversely proportional to the increase in cooling load because the more significant the cooling load, the longer the time obtained, resulting in a small room cooling rate. And for the results of the Coefficient of Performance (COP), it was directly proportional to the increase in the cooling load because the more significant the cooling load given, the higher the temperature at T1 and T2, resulting in a significant Coefficient of Performance (COP).
Analisis Kekerasan Hasil Pengelasan Gas Tungsten Arc Welding pada Baja ST 37 dengan Variasi Media Pendingin Gede Agus Widiantara; I Nyoman Pasek Nugraha; Kadek Rihendra Dantes
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 1 (2021): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i1.12245

Abstract

Cooling media is a substance that increases the hardness value of a material through a heat-treatment process. This study aims to determine the effect of cooling media on the hardness of ST 37 steel due to Gas Tungsten Arc Welding (GTAW). The independent variables, namely water cooling media, seawater cooling media, and oil cooling media, while the dependent variable is the hardness. The specimens using water cooling media, the hardness in the weld area is 47.19 kg/mm2, in the HAZ area the it is 54.6 kg/mm2, and the base metal gets a value of 40.87 kg/mm2. While the specimens with seawater cooling media get a value in the weld area of 76.37 kg/mm2, in the HAZ area it gets a value of 83.89 kg/mm2 and the base metal gets a value of 70.13 kg/mm2. The specimens with oil cooling media the value in the weld area is 40.77 kg/mm2, in the HAZ area it gets a value of 43.32 kg/mm2 and the base metal gets a value of 36.09 kg/mm2 . From the hardness values obtained, specimens immersed in seawater cooling media have the higher hardness values compared than water and oil cooling media.
Co-Authors Abdi Pranata, I Gede Adisantosa, I Gede Wahyu Denata Agus Adi, I Nyoman Alfian, Handi Aprianto, Gede Aprilia, Dodik ari pradnyana, suta Ariantika, Kadek Arifudin, Andi Armika, I Putu Arnawa, I Komang Gede Arsana, Putu Baskara, Rizal Buddhi Satya Utama Budiastawan, Ngurah Putu Darma, Kadek Budi Susila Deva Supriana, Putu Dewa Gede Hendra Divayana, Dewa Gede Hendra Dewa, I Dewa Gede Darma Permana Dewangga, Sang Putu Fitrah Dewi, L.J.E. Dipa, Dewa Putu Dias Sancaya Dwipayana, Made Krisna Eka Jaya, I Gd Elisa, Edi Fajriyanto, Muhammad Noval Firdaus, Kholid Galang Kawih Gede Agus Widiantara Gede Widayana Gede Widayana Hadi Susanto Haryono, Dimastya Teguh Cipto I Gede Ari Saputra I Gede Made Aditya Tresnajaya I Gede Wiratmaja I Gusti Ngurah Sanjaya I Putu Heri Yudistira Kadek Rihendra Dantes Kadir, Ach. Khalil Kayana, I Made Dwi Kayana, Made Dwi Kolo, Jaeme Martins Krisnayadi, Made Hari Luh Joni Erawati Dewi Made Agus Suardana Pinatih Mahayoga, I Kadek Alit Mohammad Zakarianto Nyoman Arya Wigraha Pradana, Putu Surya Pramesti, I Gede Yoga Prayuda, Gede Wisnu Priadi, Made Angga Putera, Ocky Primatara Putra Krisnanandha, Vidsvara Putra, A. A. Pt. Ananta Putra, Anak Agung Kade Semara Putra, I G Ngurah Kusuma Randi Wirdana, I Gede Riandika, Putu Ryan Pratama Putra, Ryan Pratama Satriadyanto, Irawan Suadnyana, Made Budi Suandika, I Komang Adi Suartama, I Putu Gede Subadra, I Nengah Suka Arimbawa, I Kadek Suryantara, Putu Agus Sutrisna, Kadek Wibawa, I Wayan Satya Widiarta, I Wayan Wijaya, Dedik Ananta Wijaya, Kadek Surya Yasa, Kadek Odi Supertama Zurweni Zurweni