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Journal : Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin

Analisis Perancangan Alat Pencacah Nilam Untuk Petani Nilam Prananda, Fijay; Balaka, Ridway; Endriatno, Nanang
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 1 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i1.46935

Abstract

The automatic pull shaft on the patchouli chopper is an important component of the patchouli chopper machine. The research aims to carry out an analysis of the patchouli chopper pull shaft and produce a design for the newest patchouli chopper. In this research, the focus was only on the analysis of the pulling shaft on the patchouli chopper where all research methodologies were carried out using inventor software. The main driving engine is a combustion engine with a power of 5.5 HP, S45C shaft material with a tensile strength of 58 kg/mm2, and a shaft diameter of 15 mm. In the selection of pulleys, plays with diameters of 50 mm and 300 mm are used, V - Belt speed is 0.18 m/s, circumference length is 1499 mm, using V - Belt type B with axle distance of 474.6 mm, the contact angle is 2.3 rad and the length of the chopped patchouli was 3.8 cm. From the calculations and analysis, the addition of a pulling shaft to the patchouli chopper is safe to use. Keywords: Patchouli chopping tool, Puller shaft, Patchouli
Perencanaan Alat Uji Impact Type Charpy Kapasitas 10 Joule Saktiawan, Saktiawan; Endriatno, Nanang; Imran, Al Ichlas
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 4 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.398 KB) | DOI: 10.55679/enthalpy.v5i4.15765

Abstract

In  the  implementation  of  construction  and  material  engineering,  the  choice  of materials  for  metal  material  needs  is  very  important.  The  research  objectives were planning the pendulum, swing shaft, the frame for the Charpy type impact test,  and  planning  the  test  specimen  holder.  The  research  method  includes planning  the  pendulum,  shaft,  arm,  bearing,  pole  frame  and  specimen  holder (anvil), as well as selecting materials and calculating the strength of the materials. The results of the research. The impact test tool uses a pendulum made of steel ST 37 with a pendulum length = 0.345 mm, volume = 213 mm3, mass = 1.67 kg, in the planning of the shaft, with the results of the planning calculation obtained the diameter of the shaft = 25.4 mm, while the moment torque obtained = 577,219 kg mm, in the planning of the Charpy type impact test, the frame uses C-profile steel with  a  size  of  125  x  65,  the  material  is  chosen  because  its  width  exceeds  the bearing holder, for tangsial force = 28,951 N, bending moment = 5240.1 N mm , cross-sectional  modulus  =  109.169  mm3,  the  specimen  holder  planning  must exceed  the  specimen  width  itself  so  that  the  specimen  can  be  placed  properly, the allowance = 1.206 mm2 and the planning of the impak test tool for the 10 J tool can be used to test plastic materials with an impact energy below 10 J, with a height of 610 ± 2 mm. Keywords:  Construction,  Materials  Engineering,  Metal  Materials,  Iron,  Steel, Impak. 
Analisa Pengaruh Excess Air Terhadap Efisiensi Pembakaran Boiler Jenis Pulverizer Coal 230 T/H Muholad, Wildan; Hasbi, Muhammad; Endriatno, Nanang
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 6, No 3 (2021): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (571.264 KB) | DOI: 10.55679/enthalpy.v6i3.20979

Abstract

To save on coal consumption in PLTU (Steam Power Plant), it is necessary to increase boiler efficiency. The factors that can affect boiler efficiency include: flue gas temperature, fuel specification, excess air, ambient temperature, radiation and convection losses. By changing the value of excess air in this case the percentage of oxygen (4% to 4.5%) will affect the efficiency of the boiler. Changing the value of excess air also results in a change in the electrical power used by the auxiliary system in the boiler. Calculation of boiler efficiency with the direct method by testing 2 times on each oxygen percentage value of 4% and 4.5. Efficiency increased 0.94%, from 80.76% to 81.7% in test 1 and increased 1.02%, from 90.81% to 91.83% in test II. The power usage increased by 27.959 Kw in the 1st test and increased to 26.663 Kw in the test II.Kata kunci: Boiler, efficiency, excess air, PLTU
Pengaruh Pola Susunan Laminasi Terhadap Distribusi Tegangan Dan Regangan Tarik Pada Komposit CFRP Yang Berlubang Alfian, Hamzah; Sudarsono, Sudarsono; Endriatno, Nanang
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 6, No 3 (2021): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.389 KB) | DOI: 10.55679/enthalpy.v6i3.20973

Abstract

The development of material technology is growing rapidly, especially in the manufacturing industry. One of the materials that are most often used and developed today is composite materials. The purpose of this study was to determine the effect of the pattern of laminate arrangement on the distribution of stress and tensile strain in perforated CFRP composites. The research method carried out is tensile testing using abaqus software, the specimen is designed with 8 laminates and the fiber direction is varied. The specimens were made with the ASTM D 5766 test standard and the properties used were carbon fiber composite type T800S/3900-2B. From the tensile test simulation results, it is found that the highest stress value in the composite with variations in fiber direction 0°, 45°, -45°, 90°, 90°, -45°, 45°, 0° the maximum stress value reaches 356.9 N/ mm², while the smallest stress occurs in the composite fiber direction 0°, 0°, 0°, 0°, 0°, 0°, 0°, 0° with the maximum stress value reaching 165.7 N/mm. The highest stress and strain that occurs in each specimen is located at the edge of the hole perpendicular to the direction of the force, the stress and strain increase based on variations in the direction of the fiber in the composite, the farther the orientation of the fiber direction to the direction of the applied force, the greater the stress concentration that occurs also.Keywords: Tensile test, CFRP composite, abaqus software
Analisa Pengaruh Variasi Jumlah Nozzle Dengan Memanfaatkan Ketinggian Aliran Air Terhadap Daya Listrik Yang Dihasilkan Turbin Pelton Yasir, La Ode; Balaka, Ridway; Endriatno, Nanang
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 3 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.77 KB) | DOI: 10.55679/enthalpy.v7i3.26504

Abstract

The performance of a Pelton turbine is influenced by the height, flow velocity, blade angle, number of nozzles, flow size and number of blades and nozzle spray distance. The purpose of this study was to determine the effect of variations in the number of nozzles and nozzle angles on the power produced by the PRLton turbine. The test results show that the more nozzles used, the greater the power generated and the smaller the nozzle angle, the greater the power generated. In position I using 1 nozzle, at an angle of 25o the electrical power produced is 6.16 Watt, at an angle of 30o the electric power produced is 2.65 Watt, at an angle of 45o the electrical power generated is 0.1 Watt. While in position II using 2 nozzles, , at an angle of 25o the electrical power produced is 7.56 Watts, at an angle of 30o the electrical power generated is 3.76 Watts, at an angle of 45o the electrical power generated is 0.24 Watts.Keywords: Electric power, Nozzle, Pelton turbine 
Pengaruh Penambahan Fly Ash dan Serbuk Kaca Terhadap Sifat Fisik dan Mekanik Komposit Batako Husain, La Ode; Endriatno, Nanang; Aminur, Aminur
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 4 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.125 KB) | DOI: 10.55679/enthalpy.v5i4.15779

Abstract

Composite  is  a  new  material  engineered  by  two  or  more  materials  where  the properties of the materials differ from one another both in chemical and physical properties. Composites are obtained from a combination of metal with ceramics, metal with plastics,  and others. The purpose of this study was to determine the effect of adding fly ash and glass powder on the physical and mechanical properties of  brick-based  composites.  The  drying  process  is  carried  out  for  28  days.  The compressive strength and water absorption tests were carried out after the drying process.  The  results showed  the  highest  compressive strength  value  is  on  the  B sample  is  74.17  kg  /  cm2  and  water  uptake  is  lowest  in  the  sample  A,  namely 10.53%. The highest compressive strength test results exist in the sample B is 74.17 kg / cm2 and the compressive strength is lowest in the sample A which is 66.67 kg / cm2. While the highest water absorption test results were in sample C, namely 15.05% and the lowest water absorption value was in sample A, namely 10.53%. Keywords:  Brick-Based,  fly  ash,  glass  powder,  compressive  strength,  water absorption. 
Pengaruh Sudut Elektroda Terhadap Sifat Mekanik dan Fisis Baja Karbon Rendah Hasil Proses Pengelasan SMAW Darmawan, Darmawan; Endriatno, Nanang; Aksar, Prinob
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 4 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v7i4.28333

Abstract

Analysis of the effect of welding position and electrode movement pattern on hardness,it can be concluded that the electrode movement pattern has an influence on the hardness result. The purpose of this study was to determine the effect of the electrode angle on the mechanical and physical properties of low carbon steel from the SMAW welding process. The research method used is hardness testing and microstructure analysis. The results obtained are that specimens with different electrode angles, namely 300, 450, and 600 produce an average in each welding area such as the weld area, haz area, and different areas where the greater the angle the higher Also the average for each weld area and also on the analysis of microstructure shows that the weld metal area with electrode angles of 300, 450, and 600 shows the same microstructure or does not show any effect. the larger the area of the weld metal with electrode anglesof 300, 450, and 600, the larger the ferrite area, the larger the area of the weld metal with angles of 300, 450, and 600 pearlite grains.Keywords: electrode angle, low carbon steel, microstructure, welding
Analisa Getaran Pada Balok Jepit Bebas dan Jepit-Jepit dengan Variasi Posisi Motor Penggetar Faisal, Muhammad; Endriatno, Nanang; Sudia, Budiman
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 6, No 2 (2021): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.32 KB) | DOI: 10.55679/enthalpy.v6i2.19131

Abstract

This study aims to determine the difference in vibration produced when the position of the vibration source is placed in a different position on the cantilever beam which is supported by fixed-fixed and free-fixed supports. This research used 6061 series aluminum beam with a size of 32 mm x 32 mm x 600 mm. Variations the placement of the exciter of fixed-fixed beams was in the 15 cm, 30 cm, and 45 cm positions, while the fixed-free beams was in the 10 cm, 20 cm, 30 cm, 40 cm, and 50 cm positions. The results of the research on fixed-fixed beams showed that the maximum displacement value was at a position of 30 cm with a value of 0.097 mm, the minimum displacement at 45 cm with a value of 0.04 mm. The maximum velocity value was at a position of 15 cm with a value of 0.653 cm/s, the minimum velocity was at a position of 45 cm with a value of 0.397 cm/s. The maximum acceleration value was at a position of 15 cm with a value of 12.16 m/s², the minimum acceleration was at a position of 45 cm with a value of 8.33 m/s². While the fixed-free beam showed that the maximum displacement value was at a position of 50 cm with a value of 0.197 mm, the minimum displacement at a position of 10 cm with a value of 0.097 mm. The maximum velocity value was at a position of 30 cm with a value of 1.138 cm/s, the minimum velocity at a position of 10 cm with a value of 0.670 cm/s. The maximum acceleration value was at a position of 30 cm with a value of 21,833 m/s², the minimum acceleration was at a position of 10 cm with a value of 9.95 m/s².Keywords: vibration, displacement, velocity, acceleration, aluminum