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Analisa Sifat Mekanik Komposit Serat Tapis Kelapa Dipadukan Serbuk Tempurung Kelapa Matriks Resin Epoxy Made Merdana; Salimin Salimin; Abd Kadir
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 4, No 1 (2019): Enthalpy-Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

This study aims to determine the tensile strength and bending of coconut fiber filter composites combined with coconut shell epoxy resin powder. The material used is epoxy resin, coconut filter fiber with 1 mm fiber length, coconut shell powder. The coconut filter fiber used was treated with NaOH for 1 hour. Thecomposition used is 60% Resin: 25% Fiber: 15% Coconut shell powder, 60% Resin: 20% Fiber: 20% Coconut mixed powder, 60% Resin: 15% Fiber: 25% Coconut shell powder. The procedure for making composites refers to the ASTM D 638-01 standard for tensile tests and ASTM D 709-02 for bending tests. The results showed that the highest tensile strength was in the variation of volume fraction of 60% Resin: 15% Fiber: 25% Coconut shell powder was 6.34209333 N / mm2, and in the variation of volume fraction 60% Resin: 25% Fiber: 15% shell powder coconut has the lowest tensile strength value which is4.18271666 N / mm2. while for bending testing the value of the greatest bending strength is found in variations of 60% Resin: 15% Fiber: 25% Coconut shell powder is 6.852063333 N/mm2 and the lowestbending strength value is in the volume fraction% Resin: 25% Fiber: 15% powder coconut shell which is 4,712313333 N/mm2.Keywords : Fiber Composites, Coconut Shell, Tensile Strength and Bending Strength.

Perbandingan Kuat Tekan Paving Blok Berbahan Slag Nikel dengan Penambahan Berbagai Jenis Limbah Plastik Laode Muhamad Syawal Husein; Yuspian Gunawan; Abd Kadir
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 3 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Indonesia's economic development is currently heavily dependent on the industrial sector which continues to experience rapid development. One of the growing industrial areas is the construction industry, especially infrastructure and property development that requires materials such as block paving. The purpose of this research is to find out the comparison of strong press paving blocks with the addition of nickel slag and plastic cacahan (PET, HDPE, LDPE and PP). This research uses conventional (manual) randomized methods. The results of this study showed that the influence of the addition of nickel slag and plastic cacahan in the manufacture of paving blocks against strong press can be concluded that the addition of nickel and plastic slag with strong characteristics can increase the strength of paving block press. The highest average press strength values were in Sample C samples, with mixed variations (cement 25%, coarse aggregate 5%, slag 25%, fine aggregate 5% and HDPE plastic cacahan 40%). has a press force of 155 kg/cm2 with a quality of C based on SNI 03-0691-1996. The lowest press test results were found in sample E (cement 25%, coarse aggregate 5%, slag 25%, fine aggregate 5% and plastic cacahan PP 40%) with a press test value of 87.5 kg/cm2 with a quality of D based on SNI 03-0691-1996. Keywords: Paving block, Plastic Type, Strong Press

PENGARUH KADAR GARAM TERHADAP DAYA YANG DIHASILKAN PEMBANGKIT LISTRIK TENAGA AIR GARAM SEBAGAI ENERGI ALTERNATIF TERBARUKAN Fachrul Arizal; Muhammad Hasbi; Abd Kadir
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 2, No 3 (2017): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

The purpose of this study is to find out of salinity towards electric power produced by salt water power plants as a renewable alternative electrical energy. Tool and materials used in this research were the AVO meter, pliers, copper plate, aluminium plate, ruler, measuring cups, balance analitik, salt meter, salt, copper plate, aluminum plate, cable and glass. The procedure of this study was preparing tools and materials, then making an electrochemical cell as much as 2 pairs of electrochemical cells and a container of water and salt using glass with 2 liter volume of water, making the series circuit copper plate and aluminum, making a solution of water and salt, then testing the power of salt water as a source alternative energy using AVO meter. The parameters measured in this study was a large electric potential and strong currents are able to produce brine with amounts of salt variety 25 g, 50 g, 75 g, 100 g, 125 g, 150 g, 175 g, 200 g and 225 g, done to provide different salinity. After testing the brine into alternative energy sources, large power obtained on the salinity 74% or with mass of salt 175 g which produce the power that is equal to 0058 watts, while the value of the lowest power contained in the salinity of 7% or the mass of salt 25 g, where only capable to produce the electric power amounting of 0,011 Watt. To turn on the LED lamp 1.5 W using electrochemical cells method can be done by making the cells as much as 20 cells with a volume of 2,000 ml of water and salt mixed with 175 g of salt with a salt content of 74%. Using 20 pairs of aluminum and copper electrode cell where each electrode measuring 3 cm x 6 cm.Keywords: Brine, electrochemical cells, salinity and power.

Studi Potensi Radiasi Matahari Untuk Pemanfaatan Energi Surya Di Kota Kendari Andi Wiwin; Abd Kadir; La Hasanudin; Indrayati Galugu
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 3 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

The purpose of this research is to know the data of solar radiation intensity that will be used in the utilization of solar energy. The tools and materials used in this research are Solar Power Meter, HP android, laptop, and thermometer. From the results of research can be concluded some things that data about the intensity of solar radiation can be obtained by using two methods of direct measurement and theoretical calculation. Solar intensity data obtained in this study by taking the average value of data research for a month exactly month march 2018, then obtained value for the measurement directly with the highest value of solar radiation intensity data is at 11:30 with the sun radiation intensity value of 666 W/m2 and the lowest value of solar radiation intensity data is at 17:00 with the sun radiation intensity value 167 W/m2, while for theoretical calculation then obtained with the highest value of solar radiation intensity data is at 12:00 with the intensity of solar radiation 974 W/m2 and the lowest value of solar radiation intensity data is at 17:00 with radiation intensity value sun 170 W/m2.Keywords: Data of solar radiation intensity, direct measurement and theoretical calculation, result of measurement and calculation.

PENGARUH KADAR GARAM TERHADAP DAYA YANG DIHASILKAN PEMBANGKIT LISTRIK TENAGA AIR GARAM SEBAGAI ENERGI ALTERNATIF TERBARUKAN Fachrul Arizal; Muhammad Hasbi; Abd Kadir
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 2, No 3 (2017): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

The purpose of this study is to find out of salinity towards electric power produced by salt water power plants as a renewable alternative electrical energy. Tool and materials used in this research were the AVO meter, pliers, copper plate, aluminium plate, ruler, measuring cups, balance analitik, salt meter, salt, copper plate, aluminum plate, cable and glass. The procedure of this study was preparing tools and materials, then making an electrochemical cell as much as 2 pairs of electrochemical cells and a container of water and salt using glass with 2 liter volume of water, making the series circuit copper plate and aluminum, making a solution of water and salt, then testing the power of salt water as a source alternative energy using AVO meter. The parameters measured in this study was a large electric potential and strong currents are able to produce brine with amounts of salt variety 25 g, 50 g, 75 g, 100 g, 125 g, 150 g, 175 g, 200 g and 225 g, done to provide different salinity. After testing the brine into alternative energy sources, large power obtained on the salinity 74% or with mass of salt 175 g which produce the power that is equal to 0058 watts, while the value of the lowest power contained in the salinity of 7% or the mass of salt 25 g, where only capable to produce the electric power amounting of 0,011 Watt. To turn on the LED lamp 1.5 W using electrochemical cells method can be done by making the cells as much as 20 cells with a volume of 2,000 ml of water and salt mixed with 175 g of salt with a salt content of 74%. Using 20 pairs of aluminum and copper electrode cell where each electrode measuring 3 cm x 6 cm.Keywords: Brine, electrochemical cells, salinity and power.

Analisis Peluang Penghematan Konsumsi Energi Pada Kantor Pertanahan Kota Kendari Hamisa Hamisa Hamisa; Lukas Kano Mangalla; Abd Kadir
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 4, No 1 (2019): Enthalpy-Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

In the modern era at this time, almost all human beings in all corners of the world have been dependent on the existence of electrical energy or it can be said that almost all the activities of a human being always have a relationship with electricity. This experimental study uses 2 methods of approach, namely initial energy audits and detailed energy audits. The tools used in this, the level of activity of Kendari City Land Office employees. The results of this study indicate that the initial energy audit at the Kendari City Land Office was 186, 9834 kWh / m2 (for 1 year), this has not exceeded the ASEAN-USAID standard on an office which is 240 kWh / m2 year while a detailed energy audit, the kWh value read at the Kendari City Land Office is 34.903,125 kWh (for 1 year). The opportunity to save energy (PHE) in energy audit research is to use lighting that is in accordance with its designation, perform cleaning on each AC unit which includes cleaning the air filter, fan blades, fins, evaporator and output grid on the AC. The recommendation for PHE is to do cleaning every 3-4 months for each AC unit and optimize the use of cloth curtains for each room at the Kendari City Land Office.Keywords : Initial Energy Audit, Detailed Energy Audit, Energy Consumption Intensity.

PEMBUATAN MATERIAL KOMPOSIT RESIN POLIESTER YANG DIPADUKAN LIMBAH KERTAS DAN ABU SEKAM PADI SEBAGAI PEREDAM AKUSTIK Isran Isran; Abd Kadir; La Hasanudin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 2 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Noise pollution from noise is a kind of unwanted pollution.This noise can be reduced by using an acoustic damper. This study aims to find out the technique of making polyester resin material mixed with waste paperand rice husk ash as an acoustic damper. The composite made then tested the value of sound absorption coefficient (????), composite damping test is done on kundst tube impedance tool equipped with spekerr device, amplifer, power supllay, lettop, smartphone, oscilloscope, sound lever meter with input frequency 400,600,800 Hz. The composite making method used by determining the volume fraction in composite damping test of Noise Absorption Coefficient (NAC) properties comprising Resin polyster : 50% paper waste : 20% and rice husk ash: 30%, Resin polyster 50% paper waste: 30% and rice husk ash: 20%, Resin polyster : 50% paper waste: 40% and rice husk ash : 10%. The result of all polyester resin composite test specimens in paper waste and rice husk ash reinfercement have the highest absorption coefficient 0,47857????????) at fractoin of 50%:30%:20% volume with frequency of 800 Hz. While for the lowest sound absorption result 0,475819 (????) with volume fraction of 50%:30%:20% with frequency 400 Hz. The overall specimencan be made as a damper because it has a sound absorption coefficient value >0.3.Keyword: Composite, paper waste, rice husk ash and NAC

ANALISA PENGARUH PENGGUNAAN MATERIAL KOMPOSIT PADA INTAKE MANIFOLD TERHADAP KONSUMSI BAHAN BAKAR PADA SEPEDA MOTOR Aris Nurohim; Abd Kadir; Prinob Aksar
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 2, No 2 (2017): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

The purpose of this study was to determine the fuel consumption of the motorcycle Yamaha Vega ZR assembled in 2009 by using the intake manifold with the basic material of the fiber composites. This studyused an experimental method. The sample is a Yamaha Vega ZR motorcycle is assembled in 2009 to number Engines: 5D9-191066. Data collected through the experimental method. The consumption of fuel measuredin static conditions with a measuring glass. Testing is done by measuring the time required by the machine to spend in a given volume of fuel at the 1500 rpm ,2500 rpm and 4000 rpm. Results showed that the differencein the time required to spend 10 ml of fuel between the use of intake manifold standard with intake manifold fiber composite fibers in the round 1500 rpm is 0.11 minute, the lap 2500 rpm is 0.08 minute and at enginespeed of 4000 rpm is 0.04 minute. The difference in the average time required to spend 10 ml of fuel is 0.07 minute at 1500 rpm until the engine rotation 4000 rpm. Thus, fuel consumption decreases when using theintake manifold with the basic material of the palm fiber composite intake manifold using standard.Keywords: palm fiber composites, intake manifold and fuel consumption.

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