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PENGARUH VARIASI WARNA PLAT KOLEKTOR SURYA TERHADAP KINERJA PEMANAS AIR TENAGA SURYA Harizalni SE; Aris Zainul Muttaqin; Santoso Mulyadi
ROTOR Vol 7 No 1 (2014)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Solar water heater  is a device  that heats water using  solar collectors as a heat absorber of  solar  radiation  that is  transmitted  to  the pipe containing water  . In  this research, comparative performance  testing of solar water heating to solar collector plate color variations . Variations of color used is black ( black ) no. ( 39 ) with the brand of quick drying formula zuper spray acrylic spray paint , red ( red signal ) no. ( 23 ) with rj LONDON acrylic paint brand epoxy spray paint  , and blue  ( blue  fluorescent  ) no.  ( 1004) with rj LONDON acrylic paint brand spray paint epoxy Data collection was performed by  taking data every 30 minutes  for 3 hours are 9:00 to 12:00 pm at the clock and the test performed 3 times on different days . Data taken from the study include inlet and outlet water temperature collectors , and the temperature of the water in the tank , which is then carried out data processing  to determine  the  flow rate  ,  the density of water  ,  the water  temperature difference in and out collector  ( ÄT  )  ,  the performance of solar water heaters  ( q  )  , and processing  the data graphically . The results of the study of each color plate solar collector plate showed that the color black has the highest absorption compared with red and blue , because the color black has emissivity close to 1 ( objects that are almost black)  is a  transmitter as well as a good heat absorber. Kata kunci: Kolektor, emisivitas, warna plat, air
ANALISIS EFISIENSI PADA GENERATOR 12 SLOT 8 POLE Ayu Martha Lestari; Jatisukamto Gaguk; Muttaqin Zainul Aris
ROTOR Vol 11 No 1 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.739 KB) | DOI: 10.19184/rotor.v11i1.9098

Abstract

Wind energy can be used as an electric energy generator, known as a Bayu Power Plant (PLTB). The PLTB component consists of wind turbines, generators, and batteries. The efficiency of the generator is influenced by the loading system on the power plant, which includes the use of data logger and controller components. The study aimed to find out the efficiency of the 12 Slot 8 Pole generator. The research method uses a MagNet Software simulation, with variables: in the form of R = 15 resistance and rotor rotation n = 1000 - 10,000 rpm. The results of the study show that the efficiency of the generator and the circuit starts to stabilize at rotor rotation n = 3000 rpm; highest efficiency when rotor rotation n = 9000 rpm with efficiency ηmax = 90,04614%; average efficiency ηav = 88.867%. Keywords: PLTB, 12 Slot 8 Pole Generator, MagNet Software, efficiency.
PENGARUH VARIASI DURASI CAMSHAFT TERHADAP UNJUK KERJA MOTOR BAKAR 4 LANGKAH Feri Setya Putra; Andi Sanata; Aris Zainul Muttaqin
ROTOR Vol 6 No 2 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

To obtain maximum engine performance one way to do is to do modification the camshaft . Changes can be made to alter or modify the time to open and close the valve. As already unknow that big power generated by the engine is affected by the amount of residual gases that exit the combustion chamber. The amount of air and fuel mixture entering the combustion gases and regulated by the duration of the opening and closing of the valve.For it was necessary to study the extent to which the effect of the change by the duration of the camshaft to the increased power and torque of the engine, which can then be recovered size is definitely the most appropriate duration to generate great power and torque. Effective power produced at 220 ° camshaft duration variation is at 6000 RPM of 7.7 HP, variations in camshaft duration 227 °, ie at 8.49 HP at 6500 RPM, variations in camshaft duration 233 °, ie at 6500 RPM at 8.77 HP, variations in camshaft duration 239 °, ie at 9.53 HP at 6500 RPM. Average turning moment - resulting in maximum average variation of camshaft duration 220 °, ie at 6000 RPM of 1.37 Nm Variations camshaft duration 227 °, ie at 6000 RPM 1.43 Nm Variations camshaft duration 233 °, ie at 1.47 Nm at 6000 RPM Variations camshaft duration 239 °, ie at 6500 RPM of 1.51 Nm Keywords: effect of variations in the duration of the camshaft, power, torque, and fc (fuel concumtion).
PENGARUH LAJU PREKURSOR SERBUK ALUMINIUM TERHADAP BENTUK MORFOLOGI NANOPARTIKEL ALUMINA DENGAN METODE THERMAL PLASMA Havid Arifian Rochman; Arief Ginanjar Dirgantara; Salahudin Junus; Imam Sholahuddin; Aris Zainul Muttaqin
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.495 KB) | DOI: 10.19184/rotor.v10i1.5142

Abstract

The synthesis of nanoparticles using thermal DC plasma method is a simple method for ease of installation and high efficiency is due to the rate of precursor that can be controlled. Micro-sized aluminum powder is synthesized using thermal DC plasma undergoing a process of evaporation as it passes through high temperature plasma flame, where kemuadian oxidized aluminum particles which evaporates the particles are split and binds with oxygen to form aluminum oxide or also known as alumina (Al2O3). In this experiment, the flow rate of oxygen plasma parameters at 35 SCFH (Standard Cubic Feet per Hour) and 20 amperes flows with precursors rate variation of 1.16 g / min, 3.19 g / min, and 3.5 g / min. Precursors used is 88 micro sized aluminum powder. To determine the morphology of nanoparticles of alumina testing scanning electron microscopy (SEM), the morphology form of nanosphere. Results of the analysis showed that the rate of precursor low causing agglomeration level slightly while the higher rate of precursor agglomeration rate also increased. At the rate of precursor 1.16 g / min, nanoparikel undergo agglomeration with an average particle size of 36.55 nm, and then at a rate of 3.19 gr precursor / mnt an average particle size of 46.49 nm, and at a rate of 3.5 gr / mnt an average particle size of 46.49 nm. The powder nanoparticles were then characterized using X-ray defraksi (XRD) where all alumina nanoparticles were synthesized showed alumina phase that is formed is a phase δ-Al2O3. Keywords: Alumina nanoparticles, DC Thermal Plasma, morphology, precursor rate, nanoparticles size, SEM, XRD.
PENGARUH PENAMBAHAN Mg DAN Sr TERHADAP KEKERASAN KOMPOSIT ADC12/nano-Al2O3 DENGAN METODE STIR CASTING Ahmad Al Kautsar; Salahuddin Junus; Aris Zainul Muttaqina
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 1 No 1 (2018): JURNAL STATOR
Publisher : STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin

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Abstract

Metal matrix composites generally use Aluminum (Al) as its matrix because of its low density, high processing, and high ductility. Ductility is an important factor that must be possessed on the metal matrix composite because the amplifier used is rigid and brittle. Alumina (Al2O3) is used as a reinforcing particle in a metal matrix composite because it has good thermal stability and hardness as well as a high Young modulus. Aluminum-silicon alloys (Al-Si) are excellent alloys of good melting, which have a good surface, without brittleness, and are excellent for cast alloys. The addition of magnesium (Mg) resulted in a modified rate of silicone eutectic for Al-Si-Mg, with enhanced magnesium (Mg) levels, increased alloy tensile strength but a decreasing percent elongation value. Strontium (Sr) is a common element used to modify eutectic and Si-shaped phases of rough acicular into finer and rounded fibrous forms. A metal matrix composite with a nano-sized Al2O3 particle amplifier can be fabricated using stir casting method with the addition of Mg as a Al2O3 wetting agent. Test results of the addition of Mg, Sr, and nano-Al2O3 to the highest hardness of ADC12 / nano-Al2O3 composites were found in ADC12-8Mg-0.03Sr / 2.5nano-Al2O3 variation at 78.92 HRB. Keywords : Composite Al/nano-Al2O3, alumina, magnesium, strontium, stir casting, hardness
PENGARUH POSISI VACUUM GATE TERHADAP WAKTU INFUSE PADA PROSES VACUUM ASSISTED TRANSFER MOLDING Lazuardi Rahmadhani; Ahmad Syuhri; Aris Zainul Muttaqin
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 1 No 1 (2018): JURNAL STATOR
Publisher : STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin

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Abstract

Vacuum assisted resin transfer molding is one of the methods making products where resin as matrix sucked with pressure vacuum in moulding with tranpaent bagging.The result product of vacuum assisted resin transfer molding thinner than the hand lay up method but needs longer process of infuse. Variation position vacuum gate placed in three position different 60 %, 80% and 100% of the mold lenght and vacuum pressure -0.6 bar, -0.8 bar and -1.0 bar. Spending time the process infuse for 12 minutes 48 seconds at the vacuum gate be at 80 % of the total mold length and vacuum pressure of -1.0 bar. With varying vacuum pressure and the position vacuum gate showed engineering successful in this area to produce goods process a shorter. Keywords: Vacuum Assisted Resin Transfer Molding, Vacuum Gate , Time Infusion.
PENGARUH DIAMETER ANNULUS KONSENTRIS PADA HCS (Hydrocarbon Crack System) DENGAN BAHAN BAKAR BIOETANOL TERHADAP UNJUK KERJA MOTOR HONDA SUPRAX 125 Ahmad Mahrus; Aris Zainul Muttaqin; M. Edoward R.
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 1 No 1 (2018): JURNAL STATOR
Publisher : STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin

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Abstract

Sepeda motor merupakan salah satu alat transportasi yang banyak digunakan oleh penduduk Indonesia. Alasannya sepeda motor lebih praktis dan lebih hemat jika dibandingkan angkutan umum. Dalam beberapa tahun terakhir, energi merupakan salah satu permasalahan yang krusial, dikarenakan nilai produksi minyak bumi berbanding terbalik dengan nilai konsumsinya serta semakin menipisnya deposit sumber cadangan minyak dunia. Tujuan penelitian ini untuk mempelajari tentang pemanfaatan hydrocarbon pada bahan bakar dengan cara dipecah menjadi atom hydrogen (H2) dan carbon (C) menggunakan pipa katalisator yang dipanaskan terhadap unjuk kerja motor bensin SupraX 125. Bahan bakar dipanaskan menggunakan katalis yang memiliki panjang 20 cm dengan pengaruh diameter annulus konsentris pada HCS (Hydrocarbon Cracking System). Hasil dari penelitian menyebutkan metode HCS (Hydrocarbon Cracking System) sangat efektif digunakan sebagai power suplemen untuk menghemat bahan bakar. Selisih nilai SFCe bahan bakar premium terhadap variasi perlakuan HCS sebesar 0.5 kg/HP.Jam. Pemasangan HCS mempengaruhi terjadinya penguraian atom Hydrogen (H) yang membuat pembakaran lebih cepat. Hasil uji emisi secara keseluruhan menunjukkan peningkatan kualitas pada emisi gas buang. Prosentase CO menurun yang diakibatkan peningkatan O2 dalam pembakaran yang sesuai dengan penurunan kadar HC. CO berkurang pada ruang annulus konsentris yang semakin besar. Ini menunjukkan adanya masalah pada mesin yang dikarenakan adanya ketidaktepatan waktu penyalaan bahan bakar. Kata kunci : katalis, annulus konsentris, dan HCS (Hydrocarbon Cracking System).
PENGARUH TEMPERATUR SINTERING SERBUK ALUMINIUM DAN SERBUK ARANG KAYU GLUGU TERHADAP KEKERASAN KOMPOSIT KAMPAS REM Rendi Prisma Wahyudi; Aris Zainul Muttaqin; Agus Triono
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 1 No 1 (2018): JURNAL STATOR
Publisher : STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin

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Abstract

Kampas rem merupakan salah satu komponen dalam kendaraan yang memiliki peranan penting terhadap keselamatan dan kenyamanan pengendara. Penggunaan yang terus meningkat serta perkembangan teknologi yang semakin maju dengan banyaknya produk yang beredar dipasaran, maka penelitian ini melakukan eksperimen menggunakan metode metalurgi serbuk dengan tujuan untuk mendapatkan temperatur sintering optimal guna mencapai nilai kekerasan optimal.Penelitian ini menganalisa volume serbuk arang kayu glugu dan serbuk aluminium dengan matrik resin phenolic, dengan variasi fraksi volume (40%,20%,40%). Tahapan penelitian, pertama melakukan persiapan alat dan bahan, menimbang bahan dan melakukan pengadukan bahan secara merata, selanjutnya melakukan proses penekanan selama 10 menit dan dilakukan sintering secara bersamaan pada suhu 1250C, 1750C, 2250C selanjutnya dilakukan proses pengujian kekerasan. Dari hasil pengujian pada penelitian ini didapatkan nilai kekerasan rata-rata yang memenuhi standart kampas rem SAE J661 sebesar 68-106 HRB. Spesimen dengan suhu sintering 1250C, 1750C,2250C sebesar 71,31 HRB, 85,88 HRB, 79,85 HRB. Peningkatan suhu sintering berdampak pada bahan yang digunakan, karena peningkatan suhu dan pendinginan secara perlahan dapat menurunkan kekerasan aluminium. Selain itu resin phenolic akan cepat mengeras (sifat thermosetting) seiring peningkatan temperatur sintering dan tidak terjadi pergerakan selama kompaksi mengakibatkan porositas tidak berkurang, sehingga dapat menurunkan sifat material. Kata Kunci: kampas rem, sintering, kekerasan, metalurgi serbuk
Analisis Pengaruh Tipe Kondensor Terhadap Unjuk Kerja Mesin Pendingin Menggunakan Double Evaporator Ardila Dwi Tresna; Boy Arief Fachri; Aris Zainul Muttaqin; M Nurkoyim Kustanto; Digdo Listyadi Setyawan; M Edoward Ramadhan
STATOR: Jurnal Ilmiah Teknik Mesin Vol 5 No 1 (2022): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Separation condenser is one of the types of condenser equipped with gas and liquid separator. The previous research using separation condenser showed low output temperature of 1.3 K than baseline condenser. This study is to observe the effect of separation and baseline condenser to the performance of the refrigerator with a double evaporator and using LPG and R134A as a refrigerant. This research using a parallel circuit for separation condenser and baseline. The result showed that using R134A gives 0.16% higher value of COP. Meanwhile, using double evaporator with R134A as a refrigerant gives 69.5 % higher value of COP than single evaporator.
PENGARUH HOLDING TIME DAN MOLD TEMPERATURE TERHADAP CACAT WARPAGE PADA PROSES KOMPOSIT AL-PP DENGAN INJECTION MOLDING khoirul fahmi aziz; Aris Zainul Muttaqin; Intan Hardiatama; Hari Arbiantara; Sumarji .; Dwi Djumhariyanto
STATOR: Jurnal Ilmiah Teknik Mesin Vol 5 No 2 (2022): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Success in the injection molding process is seen from the results of products that do not produce defects. Warpage defects are one of the defects resulting from the injection molding process. One way to measure warpage defects is to use the ImageJ application. The data processing stage in this study uses the Taguchi method statistical method with two independent variables namely holding time and mold temperature, each of which has three factors and repeated data three times, which aims to obtain more accurate values. The results showed a very influential variable is the holding time parameter then the mold temperature parameter. The higher the level of holding time parameters, the smaller the result of warpage defects. Unlike the holding time parameters, the best mold temperature parameters at the middle level, the result will be a small warpage defect produced. The experimental results of the highest level value on the holding time parameter are 15 seconds while in the mold temperature the value of the middle level is 50 ° C which produces a defect of 1%. While the lowest holding time parameter value is 5 seconds and the highest mold temperature level parameter value of 70 ° C is the worst variation of parameters because it produces a defect of 22%.