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Hamdan Akbar Notonegoro
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FLYWHEEL : Jurnal Teknik Mesin Untirta
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 24077852     EISSN : 25977083     DOI : https://doi.org/10.36055/fwl.v0i0.
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 5 Documents
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Search results for , issue "Volume VI, Nomor 1, April 2020" : 5 Documents clear
Design of Bridging Bridging System for Reporting Loading and Unloading of Goods in Imports and Online TPS Application at the Directorate General of Customs and Excise (DJBC) (Case Study: PT. PolyChemLindo) Anita Megayanti
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.7497

Abstract

Temporary Piling Places are used to hoard imported goods while awaiting their release from customs areas in accordance with the provisions of customs law. PT. Polychem Lindo is a company that functions as a TPS (Temporary Hoarding Site) that reports data starting from goods coming off the ship to goods leaving the gate or vice versa.At present the data reported to DJBC (Directorate General of Customs and Excise) is still in manual form even though a web service has been made to integrate the data into DJBC Online TPS, so that information about goods data in real time and monitor its movements from time-to-time.The design of the bridging application system The reporting documents of hoarding of loading and unloading of imported goods with the Online TPS DJBC application (Directorate General of Customs and Excise) is carried out so that the document entry process is only done in one transaction. This research produces a Bridging System program that functions to bridge the two running systems so that the data input process runs more efficiently. Bridging system is the use of web service information technology facilities that allows two different systems at the same time to be able to carry out two processes without interference from one system on another system.
The Effect of Power on Drying Rate of Sugarcane Bagasse Drying by Using Microwave Melvin Emil Simanjuntak
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.7396

Abstract

The sugarcane is a food plant that is widely used in daily life as a sweetener This plant is processed in a factory to produce sugar. In sugar processing, it needed a large amount of energy where its source is bagasse. As a fuel, sugarcane bagasse still has a moisture content of around 50% so the calorific value is quite low. The drying process is needed to increase this calorific value. There are many drying processes that can be used where one of them is microwave drying. The microwave drying is faster if compared to hot air. In this study, the sample of sugarcane bagasse used was chopped to a size of about 3 cm. The mass of samples used weight of 100, 125 and 150 gr and placed in an aluminum foil. The measurement of sample mass is done every minute. The electrical power used varies by 50%, 60%, 70%, 80%, 90% and 100% of the maximum power of the microwave oven. The result of the study shows a proportional reduction in moisture ratio for each power percentage difference used. The heavier sample mass will result in a smaller drying rate. The regression shows that the normal logarithmic equation is more suitable for the drying rate equation.
The Effect of the Gap Distance on The Corrosion Rate of SS400 Steel and C27000 Brass Darmawi - Darmawi
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.7569

Abstract

Crevice corrosion occurs due to differences in oxygen concentration inside and outside the gap. These experiments are conducted on the crevice formed by SS400 Steel and the C27000 Brass on the base of gap distance parameters in the ammonia polluted environment. Such  crevice often found in boiler joints, turbines and machinary parts.  Corrosion rate of SS400 steel when it stand alone in the ammonia environment is 0.7554 mpy while the interface potential is -130 mV VS Cu/CuSO4. The corrosion rate of C27000 Brass when stand alone at related ammonia environment is 20.144 mpy and the interface potential is -1191 mV VS Cu/CuSO4. When both metals combine to form a crevice, the corrosion rate of steel increased by 28% averagingly. The tests include a gap where the two metals mating each other (no distance), forming a distance of 0.239 mm and 0.398 mm. The interface potential of both metals when touch -518 mV VS Cu/CuSO4, -288 mV when formed a gap distance 0.239 mm and 0.398 mm. On the contrary the corrosion rate of Brass C27000 decreases significantly upto 60% when joining to form a gap with steel. Interface potential of Brass C27000 when forming a gap with no distance with steel is – 632 mV VS Cu/CuSO4.
Synthesis and electrical conductivity of silicon carbide fiber as electronic semiconductor Masripah Masripah; Jan Setiawan; Agustino Zulys
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.6379

Abstract

Silicon carbide shows advantage characteristics to be used as electronical devices that operated in the extreme conditions.  Its potentially improve many limitations compared to the silicon.  The applications of SiC are used in high power, high frequency, and/or high temperature conditions.  Intrinsic semiconductor properties of SiC has high thermal conductivity, mechanically and chemically stable and good resistance to the radiation. In this research, SiC fiber was synthetized from polycarbosilane polymer precursor (PCS) that solved in N,N-dimethylformamide (DMF) and toluene. This solution was that processed using electrospinning to form fibers. The fibers were cured at 200 °C and continued with pyrolyzed varied at 1200, 1300 and 1400 °C for 1 hour. The fibers electrical conductivity were carried out by LCR meter. The electrical conductivity for lower frequency at 62.36 Hz showed 7.28 × 10-6 S, achieved by the fibers that pyrolyzed at 1200 °C.  For high frequency at 100 kHz showed the fibers that pyrolyzed at 1400 °C acquired for 1.24 × 10-5 S.m-1 for its electrical conductivity.  The value of its band gap based on Kubelka Munk Equation was take placed for fibers that showed significant value at high frequency using UV-Vis DRS.  The band gap value was achieved at 2,56 eV.
Electrochemical Behavior, Structure, and Morphology of Electrodeposited Nickel on Copper Alloy Prepared from Sulfate Bath without Additive Addition Bambang Soegijono; Ferry Budhi Susetyo; Hamdan Akbar Notonegoro; Musfirah Cahaya Fajrah
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.7724

Abstract

Nickel and nickel alloy has good chemical and physical properties to enhance corrosion resistance. Electrodeposited nickel layer are expected to enhance corrosion resistance of copper as substrates. The difference distance crystal plane of Nickel and Copper is about 0.02 – 0.03 Angstrom. The electrochemical behavior, structure and morphology of electrodeposited nickel on copper substrate in sulfate solution were investigated. Electrodepositions of nickel layer were conducted at room temperature with various current densities (10 mA/cm², 20 mA/cm², and 30 mA/cm²). Electrochemical behavior, structure, and morphology of the samples were analyzed by using potensiostat, x-ray diffraction (XRD), and Scanning electron microscope (SEM). The x-ray diffraction patterns show that the nickel has cubic FCC crystal system and space group Fm-3m.  The current density during electrodeposition influence crystal parameter, crystallite size and micro strain of nickel film deposited. Electrodeposited nickel with current density 30 m A/cm² shows the best corrosion resistance.

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