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Anas Mukhtar
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V-MAC (Virtual of Mechanical Engineering Article)
Published by Universitas PGRI Banyuwangi
ISSN : -     EISSN : 25280112     DOI : https://doi.org/10.36526/v-mac.v5i1.1024
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
V-MAC (Virtual of Mechanical Engineering Article) merupakan jurnal yang diterbitkan oleh Program Studi Teknik Mesin Universitas PGRI Banyuwangi yang memuat artikel ilmiah dalam bidang : 1. Konversi Energi 2. Design/Perancangan 3. Teknik Produksi 4. Material, serta bidang lain yang terkait dengan Teknik Mesin.
Arjuna Subject : Teknik (semua kategori) - Mekanik Material
Articles 4 Documents
 1 
Search results for , issue "Vol 3 No 1 (2018)" : 4 Documents clear
Analisa Penggunaan Koil Standart dan Koil Groundstrap Dengan Variasi Kawat dan Dimensi Lilitan Terhadap Unjuk Kerja Koil Ahmad Zaenuri; Ikhwanul Qiram; Anas Mukhtar
Virtual of Mechanical Engineering Article Vol 3 No 1 (2018)
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

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Abstract

The study was conducted with a direct current DC motor ignition system circuit object with a 12 Volt battery source. This experiment compares a standard coil and a Groundstrap coil. The engine is varied with 2000 rpm, 5000 rpm and 8000 rpm. Engine speed is measured using a tachometer. Sparks are measured using the bar and the color of sparks is captured using a digital camera. Data retrieval is done with 3 replications. The data is averaged and a statistical test is performed. The results showed that the use of Groundstrap coil with wire variations and the dimensions of the coil affect the length of the spark jumps and the color of the sparks. There is a significant difference in the length of the spark jump between the standard coil and the Groundstrap coil. Standard coil lengths are longer out of focus than shorter focused Groundstrap coils and more blue sparks.
Pengaruh Studi Karakteristik Getaran Shock Breaker Pada Sepeda Motor Matic 110 CC Achmad Noerdien; Gatut Rubiono; ikhwanul Qiram
Virtual of Mechanical Engineering Article Vol 3 No 1 (2018)
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

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Abstract

A matic motorcycle 110 cc is one of kinds of motorcycle that many used by the modern people, especially for the narrow streets with high level mobility. One of aspects to beconsidered in this vehicle design is a level of comfort and safety in reducing the vehicle due to environmental conditions. The purpose of the research is to get the characteristics of shock breakerin matic motorcycle 110 cc with three motorcycle brands due to road profiles. The research was conducted with road profile model (flatten, slightly wavy and wavy) at Rpm speed (1700, 3500, 4000 and 5000). Vibration was calculated based on the speed of circle engine (Rpm) using vibration’s meter. Measurements were done at 3 points in the shock beaker, rider and passenger with 60 seconds 20 seconds. The results showed that the greater the engine speed (Rpm), the vibration tends to be smaller, whereas the smaller the engine speed (Rpm), the vibrations tend to large.
Pengaruh Jarak Kerapatan Penghalang Spiral Terhadap Unjuk Kerja Kolektor Surya Tipe Plat Datar Dody Prasetiyo Guritno; ikhwanul Qiram; Dewi Sartika
Virtual of Mechanical Engineering Article Vol 3 No 1 (2018)
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

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Abstract

The solar collector is a device that serves to collect solar radiation and convert it into useful energy of calories. Solar water heater collectors are heat exchangers that convert solar radiation energy into thermal energy in water. This research is done by modifying the existing pipe in the solar collector, wherein the pipe is given a barrier in the form of a spiral stainless wire with the difference of size that is 0.5 cm, 1 cm, and 2 cm. This study was conducted for nine days. The result of this research proved that the distance of the spiral barrier in solar collector has an effect on efficiency, the smaller spiral barrier distance makes the collector efficiency increases. It’s caused by the flow of water fluid in the pipe collided with the spiral shaft and formed following the spiral groove so as to increase the water temperature difference higher, with the higher water temperature difference then the value of solar energy useful solar collector increases. The increased heat energy is useful to the efficiency of solar collectors, where the efficiency of collectors will increase as well. The discharge flow also affects the collector efficiency, the more greater the rate of water flow, the collector's efficiency will decrease. It’s because the residence time of water in the heating pipe is shorter and the mass flow rate is greater. Furthermore, the value of solar energy useful solar collector is getting down so that collector efficiency is getting down anyway. The maximum collector efficiency occurs at a 0.5 cm spiral barrier distance with 1 liter / minute water discharge of 24.72%, while minimum efficiency occurs at 2 cm spiral barrier distance with water discharge of 3 liters/ minute that is 11.75%.
Karakteristik Char Hasil Pirolisis Ban Bekas Pada Rotary Kiln Surya Darmawan Hendra; Gatut Rubiono; Anas Mukhtar
Virtual of Mechanical Engineering Article Vol 3 No 1 (2018)
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

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Abstract

The study was conducted with a pyrolysis experiment where temperature variation of 250oC, 350oC, 450oC, and 550oC and tire sample mass of 300 gram. The heating temperature comes from an electric heater equipped with a control system. The temperature was measured using K type thermocouple. The residence process was carried out for 120 minutes measured using a stopwatch. The tire and char sample volume were measured using measuring cups and the sample mass was measured using the scales. Tests on char quality characteristics include flame, coal temperature, flame time, and ash residue. The results showed that the higher the process temperature in pyrolysis, it affects char characteristics on the rotary kiln. The percentage of char mass losses tends to increase with the high pyrolysis process temperature. Char shrinkage factor tends to decrease as the percentage of mass loss increases. Char porosity tends to rise as the percentage of mass loss increases. The percentage of blue color on the char flame tends to rise in accordance with the addition of the percentage of mass loss and vice versa the percentage of red color on the char flame tends to decrease. The combustion temperature of char combustion tends to increase according to the high temperature of the pyrolysis process. Coal char's flame time tends to increase as char porosity increases. The ash of combustion yield tends to decrease as the percentage of mass loss increases.

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