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Yuspian Gunawan
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Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin
Published by Universitas Halu Oleo
ISSN : -     EISSN : 25028944     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Jurnal ENTHALPY memuat artikel hasil penelitian tugas akhir mahasiswa di lingkup Jurusan Teknik Mesin, Fakultas Teknik Universitas Halu Oleo Entalpy Jurnal Ilmiah Mahasiswa Teknik Mesin diterbitkan 4 (empat) kali setahun pada bulan Februari, Mei, Agustus dan November.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
 1 
Search results for , issue "Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin" : 6 Documents clear
STUDI EKSPERIMEN PENGARUH KECEPATAN PUTAR MESIN PENGGERAK KOMPRESOR PADA SISTEM KELISTRIKAN AC MOBIL Esparuling Esparuling; Budiman Sudia; La Hasanuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.65 KB) | DOI: 10.55679/enthalpy.v3i1.3625

Abstract

The cooling process is essentially a process of transfer of heat energy contained in a room. This study aimsto determine the effect of the rotating speed of the compressor driving machine on the optimum cabinoptimum time temperature in the tropics. Equipment used in this research is panel of electrical system of airconditioner. The research method is done by way of experiment directly on the tool with the speedparameters of the engine speed of the compressor with the temperature to be achieved 20 oC, 22 oC, 24 oCdan 26 oC. The results showed that the higher the compressor turn speed the shorter the time required to coolthe cabin. At the engine speed of 1500 rpm, Cp = 293.07 J/mol.K, W = 0.02542 m, top = 0.00219 hours. At2000 rpm engine speed, Cp = 234.48 J/mol.K, W = 0.0285 m, top = 0.00220 hours. At the engine speed of2500 rpm, Cp = 175.88 J/mol.K, W = 0.03303m, top = 0.00222 hours. At 3000 rpm engine speed, Cp =117.275 J/mol.K, W = 0.04059 m, top = 0.00223 hours. At the speed of 3000 rpm compressor engine speedobtained the actual time of the shortest tact = 2.073 minutes and the optimum time top = 0.00223 hours.Keywords: Compressor, temperature, time, AC panel, and propulsion.
PENGARUH KECEPATAN POTONG TERHADAP PERUBAHAN TEMPERATUR PAHAT DAN KEAUSAN PAHAT BUBUT PADA PROSES PEMBUBUTAN BAJA KARBON SEDANG Angga Zeptiawan Sastal; Yuspian Gunawan; Budiman Sudia
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.238 KB) | DOI: 10.55679/enthalpy.v3i1.3626

Abstract

This research aims to know the influence of the speed rotation spindle against wear and tear andtemperature change the chisel on the process medium carbon steel lathing. This research isexperimental method research by conducting medium carbon steel lathe by using chisel of HighSpeed Steel (HSS) lathe. Rotation speed of 1500 rpm lathe spindle, 1050 rpm and 750 rpm with adepth of cut of 0,5 mm and a 0,5 mm/min feed speed shall be performed every 1 times thepulverizing prises with a slashed workpiece length of 50 mm. Every spindle rotation speed is done3 times the lathe process. Lathe wear and chisel lathe are measured every 1 time of the latheexperiment. The test results in this research show that the speed of rotation of the spindle lathes towear and temperature at 1500 rpm spindle round earned the highest wear 0,463 mm at round 750rpm value acquired spindle lowest wear 0,150 mm, while at 1500 rpm spindle rotation obtained thehighest temperature value of 126,3oC and at 750 rpm spindle spin obtained lowest temperature65,0oC.Keywords: Spindle rotation, steel, HSS, wear and temperature.
STUDI EKSPERIMEN KEKUATAN MEKANIK DAUN NANAS HUTAN DENGAN METODE PENGUJIAN TARIK Firman Firman; Muhammad Hasbi; Prinob Aksar
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.938 KB) | DOI: 10.55679/enthalpy.v3i1.3627

Abstract

The purpose of this research is to know the strength of pineapple forest leaf fiber with NaOH treatment.Thisresearch material used of forest pineapple fiber. The treatment of the specimen was carried by immersionwith 5% NaOH solution, sun and air, respectively for 2 hours. The specimen test was made based on ASTMD 3379-75 standard for tensile test specimens.NaOH tretment effect on tensile strength of peneaple forestleaf fiber. The test result showed that the highest tensile test value was found on the specimen with NaOHtreatment of 78.17403 N/mm2. Whose tensile strength tends inncrease after experiencing alkali treatment(NaOH). Tretment of air and sun less influence of tensile strength of peneapple leaf fiber. Then value oftensile test of sunlight pineapple forest 71.20283 N/mm2 and the value of tensile test of pineapple leaves forair treatment forest of 43.84033 N/mm2.Keywords : Forest pineapple leaf fiber, NaOH and tensile strength.
PERENCANAAN SISTEM TRANSMISI ALAT PENIRIS PADA MESIN PENGERING HELM Samhuddin Samhuddin; Muhammad Hasbi; Jamiluddin Jamiluddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (116.619 KB) | DOI: 10.55679/enthalpy.v3i1.3629

Abstract

A helmet drying machine is a device used to dry a helmet in a relatively short time. This helmet dryingmachine is divided into two parts namely: slicer/extortion machine and dryer. This slicer/squeezer machineserves to reduce the water content contained in the helmet up to 60-80%. In planning theoretically discussthe main components of the slicer transmission system on the helmet drying machine that determines: thediameter of pulley, the rotation ratio of the pulley, the shaft axis distance, the shaft diameter of the pulley II,and the bearing number. From the calculation results obtained as follows: 0.25 HP motor crusher power,electric motor rotation 1400 rpm, diameter pulley I 65 mm, diameter pulley II 130 mm, rotation ratio at 1:2pulleys, distance between the axis 251.32 mm axis, the diameter of the shaft on the pulley II 20 mm, and thenumber of open type 6004 bearings.Keywords: transmission system, pulleys and belts, shaft and bearing.
PENGARUH PEMAMFAATAN FABA (FLY ASH AND BOTTOM ASH) TERHADAP LAJU PERPINDAHAN PANAS PADA TUNGKU ARANG Afandi Afandi; Salimin Salimin; Jenny Delly
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.759 KB) | DOI: 10.55679/enthalpy.v3i1.3624

Abstract

As a manifestation of the application of materials engineering science in the field of furnace experimentalresearch makes a study to solve the problem what happens to the existing stove by utilizing the material thatis cheap and easy to get and applied in this case the materials used are faba (flyash and bottom ash) as amedia insulator that can increase the head resistance of the clay furnace, as previous research has shown flyash can be used as an.This experimental study was conducted on five different model variations ofcomposition . the materials used are clay cement, sand and fly ash. The data obtained is measured by the toolthermo coople. The results of this study indicate that the material on the composition 40:60% lowestconductivity value is obtained0.018 W/m.oC with the head provided ±500 oC.the lower the conductivity valuethe better the quality of the material as the insulator.Keyword: Composite, conductivity, faba, fly ash and bottom ash.
PEMBUATAN KOMPOSIT SERAT SERABUT KELAPA DAN RESIN POLYESTER SEBAGAI MATERIAL PEREDAM AKUSTIK Suriadi Suriadi; Ridway Balaka; La Hasanuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 1 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.651 KB) | DOI: 10.55679/enthalpy.v3i1.3632

Abstract

Noise pollution from noise is a classic promblem in Indonesia. This noise can be reduced by using anacoustic damper. Composite material made from coconut fiber fiber matrix is an alternative material forenvironmentally friendly acoustic damper because it utilizes agricultural waste material. This research hasmade composite based on coconut fiber fiber matrix with polyester resin. To increase the strength of coconutfiber fibers was first muffled in 2% NaOH solution for 3 hours. The composite made then tested the value ofsound absorption coefficient (????), composite damping test is done on kundst tube impedance tool equippedwith spekerr device,amplifer,power supllay,lettop,smartphone,oscilloscope,sound lever meter with inputfrequency 200,400,600 Hz. The result of Noise Absorption Coefficient (NAC) test of all polyester resincomposite test specimens in coconut fiber reinfercement have the highest absorption coefficient 0,50568 (????)at fractoin of 70:30% fiber volume with frequency of 600 Hz. While for the lowest sound absorption result0,503558 (????) with volume fraction of 70:30% fiber with frequency 200 Hz. The overall specimen can be madeas a damper because it has a sound absorption coefficient value >0.5Key word: Composite, acoustic damping, coconut fiber fibers and NAC.

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