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All Journal Journal of Geoscience, Engineering, Environment, and Technology Bina Teknika
Mohamad Faizal, Mohamad
BPOM Samarinda
Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Physics

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Efforts on Geological Conservation to Watuadeg-Basalt Pillow Lavas at West Sumber, Berbah District, Sleman Regency, Yogyakarta Special Region-Indonesia Faizal, Mohamad; Arisandy, Rydo Faisal; Tatawu, Ariel l Afrandi; Wijaksono, Shandi Hargian; Alansa, Frando Ryan; Arifin, Muhammad Nur; Mulyaningsih, Sri
Journal of Geoscience, Engineering, Environment, and Technology Vol 3 No 3 (2018): JGEET Vol 03 No 03 : September (2018)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1352.764 KB) | DOI: 10.24273/jgeet.2018.3.3.2035

Abstract

Site of Berbah pillow lavas is an important geological heritage that is currently as one of the main tourism destination area located in Yogyakarta Special Region, Indonesia. It has a unique appearence of pillow structures with diameters of 0.5-1.0 m and the flow length of 2-5m. This site is used to visited by students and earth researchers becouse of its unique geological history. This study was approached with geotourism and geoconservation points of view. The research method uses qualitatively field geological observations. Data analysis was carried out by assessing the feasibility study of the geological conditions that had been produced in relation to the development of educational toursm. In its condition, this site suffered damage to the development impacts in the surrounding area and was once an object of agate mining so that its condition was increasingly not maintained. In order to maintain this site and become a protected geological site, there must be seriousness of various parties in an effort to map the geological conditions of the pillow lava complex, an important role that geologists have to inform and disseminate to all stakeholders and local residents to be able to independently manage the potential of geotourism. In addition, it also needs the commitment of the local government in protecting the pillow lava object and fighting for it to become a protected geological reserve.
PERANCANGAN ULANG SISTEM HVAC PADA GEDUNG PERKANTORAN X DI JAKARTA DENGAN METODE CLTD Faizal, Mohamad; Saputra, Rudi
Bina Teknika Vol 12, No 1 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

HVAC system ( Heating Ventilating and Air Conditioning ) is a system that serves to organize temperatures and humidity the air on a room , that feels comfortable condition. In redesigned system HVAC to 8 floors office buildings , by using CLTD method ( cooling load temperature difference ), where the state of temperature design at 73,4 and 50% moisture. Existing cooling load 8.880.000 BTU/hr and air supply existing of 264.180 CFM. Redesigned calculation of cooling load is 11.626.701 BTU/hr ,where there is increased by 30.9 %, and obtained needs air supply of 343.456,73 CFM and increased by 30 %. Chiller system installation at the building using air cooled chiller , existing chiller using four chiller units of 250 tons refigerant each and one units for back up. Based of calculation obtained chiller capacity is 969 tons refrigerant, so that four units chiller available must in operates with 17 Air Handling Unit (AHU) to be optimum cooling,with dimension ducting 35 in the largest and smallest 9,5 in.
ANALISA PENGARUH SUHU DAN WAKTU PEMANASAN PADA NYLON FILM TERHADAP MAMPU BENTUK ZIPPER Faizal, Mohamad; Wahyudi, Fahmi
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Ultrasonic Welding has been used to join the thermoplastic material of about 35 years. Now, Ultrasonic Welding has been widely used not only for the thermoplastic material, but also can be used for all kinds of industries, one of which is the textile industry. Ultrasonic Welding has many advantages economically and efficiency. In its use of the zipper industry, Ultrasonic Welding used to join between components to the surface of the film nylon zipper. However, the wrong calculation of the temperature and the length of time could caused the strength of nylon films was reduced to cause permanent damage. This study aims to determine the temperature and duration of heating time. Ultrasonic Welding is used Branson type with power supply 40 kHz / 60 W with a maximum current of 3A. Booster type used is standard series M8 x 1:25 Horn 40 kHz with titanium material. Converter used CH30 with a maximum continuous use at 60 W. attachment method used is butt joint with a gap between the horn surface is ¼ inch zipper.Thermoplastic material in this case used nylon 66.
ANALISIS PENYERAPAN PANAS PADA COVER ACCU DI MOBIL SUV Faizal, Mohamad; Fitri, Mariza
Bina Teknika Vol 12, No 2 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Batteries or accumulators on the car serves to store electrical energy in the form of chemical energy, which will be used to supply the system to the electric starter, ignition system, lights and other electrical components. In the car, the battery damage can occur due to many factors including temperature. Batteries that work at higher temperatures will have a life span that is lower than at normal room temperature (25OC). Generally, the location of the battery is in the engine room so that the battery position was close to the engine. The car engine works at the optimum temperature 80 ° C - 90 ° C so that the heat is around the engine room can be exposed directly to the battery and can affect the performance and lifetime of the battery. Adding insulation on cover, with low thermal conductivity coefficient will decrease heat transfer rate . Polyurethane as insulation with 7,5 mm thickness will maintenance battery liquid temperature 45,5 OC after running through three hundred minutes.
ANALISIS KEKUATAN DAN KUALITAS SAMBUNGAN LAS DENGAN VARIASI PENDINGINAN OLI DAN UDARA PADA MATERIAL ASTM A36 DENGAN PENGUJIAN NDT (NON DESTRUCTIVE TEST) Faizal, Mohamad; Umam, Syahrul
Bina Teknika Vol 14, No 2 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Welding is the process of joining two metals to the point of metal recrystallization using either added or not material and using heat energy as a melting agent. In this study, different cooling variations on each specimen were carried out, the material used was ASTM A36 Plate, 3.2 mm diameter E7018 electrode, cooling used with Oil and Air. in the implementation of welding using the SMAW (Shielded Metal Arc Welding) welding method. From the above understanding, research and testing are carried out including tensile tests, radiography / x-rays, and penetrants. The purpose of this study was to determine the strength and quality of welded joints that were not seen with the Destructive Test on the ASTM A36 plate and also to determine the effect of variations in oil and air cooling. From this study it can be found that the tensile strength values for specimen 1 (Oil ) is 373.06 MPa. While the value of tensile strength for specimen 2 (Air) is 365.31 MPa, this means that it has decreased by 7.75 MPa from the tensile strength of specimen 1 (Oil).
PENGARUH ARUS PENGELASAN PADA BAJA ASTM SA 516 Gr70 TERHADAP KEKUATAN TARIK DAN KETANGGUHAN LAS SMAW DENGAN ELEKTRODA E7018 Faizal, Mohamad; Salam, Ali R
Bina Teknika Vol 14, No 1 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

The strength of the weld is influenced by the arc voltage, the magnitude of the current, the speed of welding, the magnitude of the penetration and the electrical polarity. The determination of the magnitude of the current in metal grafting using arc welding affects the efficiency of the work and the weld material. Based on the existing problems, this research aims to determine the effect of low carbon steel welding current on tensile strength, toughness, hardness and micro structure to use SMAW with E7018 electrode using experimental research methodology using low alloy steel ASTM SA 516 gr 70 containing chemical element C = 0.16%, Si = 0.37%, Mn = 0.146%, S = 0.11%, Ni = 1%, Nb = 1%, Cr = 2%, Cu = 0.47%. Material welded with a variation of welding current 110 A, 130 A and 150 A using reverse polarity DC SMAW with E7018 electrode diameter of 3.2 mm. Specimens were tested for tensile strength, toughness, hardness and microstructure photographs with the highest tensile strength results in a variation of 130 A currents with an average of 546.83 MPa which increased by 21.77 MPa from raw materials. The highest yield strength at 130 A current variation with an average of 377.27 MPa which increased by 17.27 MPa from raw materials. The toughness in the highest welding area occurs in the 110 A current variation of an average of 1.85 Joule / mm2, it decreases 0.375% of the raw materials. The highest level of hardness occurs in the weld metal area with an average of 201.5 HVN of current variation of 150 A, this show in the micro structure of the grains are softer than the variations of other welding currents.
ANALISIS PENGARUH PENURUNAN TEMPERATUR PADA PROSES TUANG CAIRAN LOGAM DENGAN COVER LADLE DI PT. X Faizal, Mohamad; Gunawan, Hendra
Bina Teknika Vol 15, No 1 (2019): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Block Cylinder is an important component of a vehicle engine where the quality of the component should not be defect because it can affect the function of the vehicle engine. Block cylinder is made from cast iron material (FC 230) which must be melted with temperature >1400 ° C. The temperature of cast iron molten metal into the mold is a very important factor to guarantee final quality of block cylinder. Process pouring of molten metal into a mold using a ladle to pouring 15 molds. Pin hole defects often occur in the final castings, this is due to molten metal temperature drop at the end, the one factor is air convection suction smoke collector. Smoke collector is required to move the gas that arises during the pouring process to outside the factory in order to make a comfortable and healthy work process, but it has side effect speed up decreasing temperature of molten metal. To solve the decrease temperature is minimize the rate of heat transfer that occurs from molten metal to environmental air. One way is to close the ladle with the cover to reduce the heat transfer that occurs in the metal liquid. The material used as a ladle cover is Kaowooltm SZr, where it has low thermal conductivity and light density. The rate of heat transfer occurring in the metal liquid to the surrounding air without cover is 4,5563 kW. After using the ladle cover the rate of heat transfer from metal liquid to air decreases to 1.8287 kW. Then the liquid temperature of the final cast metal rises from 1369 ° C to 1383 ° C, and the pin hole defect occurring in the final cast decreases from 0.22% to 0.12%.
Co-Authors Alansa, Frando Ryan Arifin, Muhammad Nur Arisandy, Rydo Faisal Fitri, Mariza Hendra Gunawan Salam, Ali R Saputra, Rudi Sri Mulyaningsih Tatawu, Ariel l Afrandi Umam, Syahrul Wahyudi, Fahmi Wijaksono, Shandi Hargian