Garuda - Garba Rujukan Digital

FABRIKASI SERAT NANO BERBASIS POLIMER MENGGUNAKAN TEKNOLOGI ELECTROSPINNING Hentihu, M. Fahrur Rozy; Sholahuddin, Imam
ROTOR Vol 8, No 1 (2015)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.886 KB)

Nano fibers can be fabricated using electrospinning technology using local components at low cost. Electrospinning technology also has advantages to control the morphology, uniformity, porosity and composition of nano fiber by pumping a solution of the gel through the nozzle of a metal-needle high voltage electrified. Based on the results of the research, the general parameters required for the manufacture of electrospinning machine is a resolution rate of spraying the solution (Î¼â / min) and the magnitude of the high voltage power source (kV). A human hair is approximately 60 Î¼m size looks larger than the size of the resulting PVA fiber electrospinning machine. These results were confirmed by the results of fiber characterization using the AFM in the area of ââfiber 50 Î¼m x 50 Î¼m, fiber size in the range of <1 Î¼m are included in the order of 1000 nm. It can be concluded that the electrospinning machine that has been made in this study has been able to create nanometer-scale fibers.

FABRIKASI DAN KARAKTERISASI NANOGENERATOR BERBASIS NANOFIBER-NANOWIRE ZnO Sholahuddin, Imam; Hentihu, M. Fahrur Rozy
ROTOR Vol 8, No 1 (2015)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.356 KB)

Fiber diffusion process when the fiber is still green on a plate collector and the thermal decomposition process followed by the formation of ZnO crystal nucleation has a very large role of the morphology of the final form of fiber products. Conversely, a positive result occurs in nanowire growth process. At the time of natural air pressure conditions and the presence of oxygen in the air in the process of sintering for 2 hours without using a catalyst, ZnO crystals can grow by itself (self-growth) into a nanowire. As a material nanogenerator, this situation provides an additional active area to excite the tap-off force into electrical voltage of up to 234.55 mV (2 Î¼â / min).

PEMANFAAT FREKUENSI BUNYI MATERIAL SEBAGAI DASAR PENGUJIAN MODULUS ELASTISITAS PADA PENGUJIAN TANPA MERUSAK (NON DESTRUCTIVE TEST) Hentihu, M. Fahrur Rozy; Djaelani, Abdul Hadi; Choiron, Moch. Agus
ROTOR Vol 6, No 1 (2013)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar

Elastic modulus of material are usually obtained from tensile test. Tensile test categorized as destructive test. One of destructive test weakness is the testing specimen can not be reused. So we need alternative on elastic modulus test without damaging the specimen (non destructive test). This research aims to determine whether the sound frequency of material can be used as a basic for elastic modulus test as a non destructive test. On this research, two different test performed on the same specimen. First test is testing elastic modulus using sound frequency test (non destructive test) and second test is testing elastic modulus using tensile test (destructive test). Percentage error obtained from comparing percent error between those two tests. The results showed, in testing the elastic modulus of brass specimen has an error percentage of 10.33%, in testing the elastic modulus of aluminium specimen has an error percentage of 4.39%, and in testing the elastic modulus of steel specimen has an error percentage of 1.89%.Â Keywords: Elastic modulus, Non destructive test, Sound frequency

FABRIKASI SERAT NANO BERBASIS POLIMER MENGGUNAKAN TEKNOLOGI ELECTROSPINNING M. Fahrur Rozy Hentihu; Imam Sholahuddin
ROTOR Vol 8 No 1 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.886 KB)

Nano fibers can be fabricated using electrospinning technology using local components at low cost. Electrospinning technology also has advantages to control the morphology, uniformity, porosity and composition of nano fiber by pumping a solution of the gel through the nozzle of a metal-needle high voltage electrified. Based on the results of the research, the general parameters required for the manufacture of electrospinning machine is a resolution rate of spraying the solution (μℓ / min) and the magnitude of the high voltage power source (kV). A human hair is approximately 60 μm size looks larger than the size of the resulting PVA fiber electrospinning machine. These results were confirmed by the results of fiber characterization using the AFM in the area of fiber 50 μm x 50 μm, fiber size in the range of <1 μm are included in the order of 1000 nm. It can be concluded that the electrospinning machine that has been made in this study has been able to create nanometer-scale fibers.

FABRIKASI DAN KARAKTERISASI NANOGENERATOR BERBASIS NANOFIBER-NANOWIRE ZnO Imam Sholahuddin; M. Fahrur Rozy Hentihu
ROTOR Vol 8 No 1 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.356 KB)

Fiber diffusion process when the fiber is still green on a plate collector and the thermal decomposition process followed by the formation of ZnO crystal nucleation has a very large role of the morphology of the final form of fiber products. Conversely, a positive result occurs in nanowire growth process. At the time of natural air pressure conditions and the presence of oxygen in the air in the process of sintering for 2 hours without using a catalyst, ZnO crystals can grow by itself (self-growth) into a nanowire. As a material nanogenerator, this situation provides an additional active area to excite the tap-off force into electrical voltage of up to 234.55 mV (2 μℓ / min).

PENINGKATAN NILAI PRODUK PADA KELOMPOK USAHA KECIL PENGEPUL BARANG BEKAS DI KECAMATAN AMBULU DAN KECAMATAN JENGGAWAH KABUPATEN JEMBER Dodi Setiabudi; Hentihu M Fahrur Rozy
ROTOR Vol 11 No 1 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Waste is waste that is caused by human activities and consumption. Garbage has become an old problem faced by cities in Indonesia, including the town of Jember. The small business group BAROKAH and FAIQ JAYA are small business groups engaged in the collection of used goods (waste) in the Ambulu and Jenggawah Districts of Jember Regency, which consist of garbage collectors. The types of used products that are accommodated are non-organic waste such as scrap metal, waste/paper, and plastic waste, where the plastic trash and other garbage are collected, and recycling processes can still increase the selling value. This activity aims to increase the value of selling products, income, and knowledge of small business groups as activity partners. The plan for this activity is carried out by holding a plastic garbage crusher, a special cart of chemical, organic waste, and training activities in waste management, garbage utilization training, operational training tools, and equipment maintenance training. The method of implementing this activity is field observation, socialization, discussion with activity partners, designing and manufacturing tools (plastic garbage crusher and organic / non-organic carts, waste management training, waste utilization training, operational training tools, tool maintenance training, and monitoring evaluation of activities. From this activity 1 (one) unit of plastic waste crushing machine has been produced to increase the selling value of plastic waste, 2 (two) groups of organic / non-organic waste bins to streamline the garbage collection process, the activity partners have received training-training waste management, waste utilization training, operational training tools, and tool maintenance training, so that knowledge of increasing product selling value and partner income can increase. Keywords: Plastic Waste

PEMANFAAT FREKUENSI BUNYI MATERIAL SEBAGAI DASAR PENGUJIAN MODULUS ELASTISITAS PADA PENGUJIAN TANPA MERUSAK (NON DESTRUCTIVE TEST) M. Fahrur Rozy Hentihu; Abdul Hadi Djaelani; Moch. Agus Choiron
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (255.777 KB)

Elastic modulus of material are usually obtained from tensile test. Tensile test categorized as destructive test. One of destructive test weakness is the testing specimen can not be reused. So we need alternative on elastic modulus test without damaging the specimen (non destructive test). This research aims to determine whether the sound frequency of material can be used as a basic for elastic modulus test as a non destructive test. On this research, two different test performed on the same specimen. First test is testing elastic modulus using sound frequency test (non destructive test) and second test is testing elastic modulus using tensile test (destructive test). Percentage error obtained from comparing percent error between those two tests. The results showed, in testing the elastic modulus of brass specimen has an error percentage of 10.33%, in testing the elastic modulus of aluminium specimen has an error percentage of 4.39%, and in testing the elastic modulus of steel specimen has an error percentage of 1.89%. Keywords: Elastic modulus, Non destructive test, Sound frequency

Analisa Torsi Motor Bakar 4 Tak Berbahan Bakar LPG Dengan Penambahan Turbulator Pada Intake Manifold Ahmad Zainuri; Nasrul Ilminnafik; M Fahrur Rozy Hentihu
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 1 No 1 (2018): JURNAL STATOR
Publisher : STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

In combustion engines, the fuel and air mixing qualities are very influential on combustion and ramification of engine performance. The addition of turbulence to the intake manifold will inflate airflow and fuel into turbulence and make the air and fuel mixture more homogeneous, thus combusting combustion. The purpose of this study was to compare the maximum torque value of fuel combustion 4 premium fuel and LPG with added turbulence variations on the intake manifold with corner blades 30o, 45o and 60o. According to the research data, the use of turbulence with the angle of the blade 30o able to provide the best torque value due to create the most optimum turbulent flow so that the fuel mixing quality becomes more perfect. Keywords: Torque, LPG, Intake manifold and Turbulator.

PENGARUH PARAMETER WIRE CUT EDM TERHADAP LAJU PEMBUANGAN MATERIAL DAN KEAUSAN KAWAT M Fahrur Rozy Hentihu; Dhimas Ilhamsyah; Franciscus Xaverius Kristianta; Ahmad Adib Rosyadi; Hari Arbiantara Basuki
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 1 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

To improve the performance of the WEDM process, it is necessary to adjust the WEDM parameter settings to optimize the material removal rate (MRR) by decreasing the electrode wire wear (TWR) value. Using SKD 61 steel as the material, the impact of peak current, voltage open, and wire tension on material removal rate and tool wear ratio is used to estimate the ideal level parameters. The study's findings should be able to offer suitable parameter settings for WEDM work. Peak current (Ip) of 63.7%, wire tension of 31.4%, and open voltage of up to 1.9% are the machining parameters that impact the material removal rate (MRR) in the wire cut electrical discharge machine process sequentially. Open voltage, which contributes 54.4%, the wire tension parameter, which contributes 36.5%, and the peak current (Ip) parameter, which contributes 7.8%, are the machining parameters that have the most significant cumulative influence on the tool wear ratio (TWR). Peak current parameter at level 3 (9A), open voltage parameter at level 1 (5V), and wire tension parameter at level 2 (8N) are the ideal settings for MRR and TWR, resulting in MRR values of 9.861 mm3/min and TWR as high as 0.078. The study's findings usually show that higher wire tension and peak currents enhance material removal rates because the jumps of sparks produce tremendous energy. In contrast to how to open voltage and wire tension affect the wear value of the wire, thicker wires erode more quickly because more tremendous energy is generated, necessitating ideal conditions for both responses. The results of the optimization of the two responses are produced by raising the maximum peak current, lowering the minimum open voltage, and figuring out the ideal wire tension. Keywords: Wire Cut Electrical Discharge Machine, Material Removal Rate, Tool Wear Ratio.

Penigkatan Kualitas Produk Material Komposit Fiberglass Menggunakan Vaccum Assisted Resin Infusion di Industri Wangi Fiberglass Banyuwangi Asrofi, Mochamad; Dwilaksana, Dedi; Sakura, Rahma Rei; Junus, Salahuddin; Hentihu, M. Fahrur Rozy; Yudhistiro, Danang; Syuhri, Skriptyan Noor Hidayatullah; Taufik, Taufik
Medani : Jurnal Pengabdian Masyarakat Vol. 2 No. 3 (2023): Desember 2023
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jpm.v2i3.366

Pembuatan komposit sebagai pengganti material logam membutuhkan teknologi sebagai penunjang produksi sehingga menghasilkan banyak produk dengan kualitas yang bagus. Bahan komposit mempunyai beberapa keunggulan diantaranya massa jenis ringan dan sifat mekanik yang baik. Umumnya, bahan komposit terdiri dari dua penyusun yaitu matriks dan fiber. Matriks berfungsi sebagai pengikat dan fiber berguna sebagai penguat struktur komposit. Metode pembuatan produk tersebut yaitu vaccum, casting, dan hand lay-up. Hasil menunjukkan produk komposit dengan vaccum assisted resin infusion (VARI) mempunyai kualitas yang baik dan minim cacat dibandingkan dengan casting dan hand lay-up. Metode VARI dapat diaplikasikan di industri manufaktur komposit fiberglass. The fabrication of composites as a substitute for metal materials requires technology to support the production to produce many products with good quality. Composite materials have several advantages, including light density and good mechanical properties. Generally, composite materials consist of two components, namely matrix and fiber. The matrix functions as a binder and the fiber is useful as a reinforcement for the composite structure. The fabrication methods of these products are vacuum, casting, and hand lay-up. The results show that composite products with vacuum-assisted resin infusion (VARI) have good quality and minimal defects compared to casting and hand lay-up. The VARI method can be applied in the fiberglass composite manufacturing industry.

Title

Found 12 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 12 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 12 Documents
Search