cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Hamdan Akbar Notonegoro
Contact Email
hamdan_an@untirta.ac.id
Phone
+62254-395502
Journal Mail Official
flywheel@untirta.ac.id
Editorial Address
Department of Mechanical Engineering, Faculty of Engineering, Universitas Sultan Ageng Tirtayasa Jl. Jend. Sudirman Km. 3 Cilegon,
Location
Kab. serang,
Banten
INDONESIA
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
 1 
Search results for , issue "Volume 7, Issue 1, April 2021" : 5 Documents clear
Characteristics of surface roughness and microhardness of nitrided pure iron Jan Setiawan; Sugeng Riyanto; Sri Galuh Banawa
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.10198

Abstract

The nitriding process on metal is commonly made to improve hardness, tribological properties, machinery components, and parts durability. This nitriding process shall affect surface roughness.  The surface roughness determined the quality of components at the time of its use.  The surface hardness changes through the surface chemistry, and to increase the surface roughness are important things to observe the surface modification in nitriding component. The nitriding process of pure iron has been carried out to achieved high surface hardness. The nitriding process was done at the temperature of 1000 °C for 1 hour in the nitrogen atmosphere. This work will discuss the roughness and microhardness characteristic of untreated and treated by nitriding of the pure iron surface to show the correlation of surface roughness to its microhardness. Surface roughness testing is done by mapping the sample area in an array. The surface hardness test is carried out on the Vickers scale. The surface roughness results showed two critical values: surface roughness (Ra) and the mean surface roughness depth (Rz).  The surface roughness value of pure iron increased, the lowest value before treated is 0.0465 μm and the highest value after treated is 0.1089 μm.  The changes of Rz value before treated is 0.2333 μm and the highest value after treated is 1.160 μm.  The surface microhardness after nitriding increased significantly. The average increase that occurred was from 122.8 HV become 533.8 HV.
The H2S Corrosion Effect On The Stationary Turbine Blade Thomas Agus Bayu Prasetyo; Hamdan akbar Notonegoro; Ova Kurniawan; Sunardi Sunardi
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.11213

Abstract

The Geothermal fluids were disturbed by volcanic gas sulfide deposit reactions which form by reaction of metal(s) with H2S. this sulfate acid is one of the most corrosive compounds in the steam which lead the pitting, stress corrosion cracking and other corrosion mechanisms. An optical microscope, XRF dan X-ray diffraction is used to observe the sediment samples that came from stationary blades. The results show that it mainly consists of 89.7%wt iron sulfide (FeS) and 10.3%wt arsenic trisulfide (As2S3). This phase is toxic by inhalation and ingestion. Downstream steam pipeline treatment is required to reduce sulfide carried away into steam turbines such as scrubbing or washing steam. For this reason, special handling is needed for the toxic waste resulting from washing.
THE PERFORMANCE OF VAPOR COMPRESSION REFRIGERATION SYSTEM USING R-1270 Kamin Sumardi; Ega Taqwali Berman; Mutaufiq Mutaufiq
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.9998

Abstract

The use of environmentally friendly refrigerants as working fluids in vapor compression refrigeration systems can prevent global warming effects and depletion of the ozone layer. This research aims to obtain data on the performance of the vapor compression refrigeration systems that use R-1270. Refrigerant R-1270 is categorized into the hydrocarbon (HC) group that is environmentally friendly with ODP = zero and GWP <3. Tests were conducted on vapor compression refrigeration system that consisted of a domestic refrigerator (RD) and a chest freezer (CF). The parameters measured in this research were: refrigeration effect, compression work, weight of refrigerant circulated, electricity consumption, coefficient of performance, and the time required to reach the lowest evaporator temperature. In testing, the first step was to conduct a test on the vapor compression refrigeration system that used baseline refrigerant (R-134a) with a weight according to the manufacturer’s recommendations. Then, the second step was to test the performance of the vapor compression refrigeration system that used R-1270 with a mass of 30% of baseline. The test was conducted for 300 minutes by recording the observed data at every 30-minute interval. The results showed that the replacement of baseline refrigerant by R-1270 was able to increase the coefficient of performance of the vapor compression refrigeration system by 13% - 56% and reduce electricity consumption by 13.5% - 19%. This research has implications for the work of compressors that becomes easier and cheaper energy costs.
Effect Of Titanium On Corrosion Behavior Of Aluminum Alloy 3104 As a Candidate Material For Radiator Combustion Engines Arief Syarifuddin Fitrianto; Bambang Soegijono; Caing Caing; Hamdan Akbar Notonegoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.10855

Abstract

Aluminum Alloy 3104 is aluminum usually used for beverage can. By modifying the content of Titanium content in the alloy, it is expected that this material will be suitable for radiator engine combustion. Especially for its corrosion behavior in coolant solution. Aluminum alloy with different content of Titanium was investigated on its crystal structure, morphology and its corrosion behavior in ethylene glycol solution which is usually used as additive in coolant water. X-ray diffractometer, Electron microscope and potentiodynamic were used to investigate the crystal structure, morphology and corrosion behavior respectively. The results show (002) crystal plane dominate the surface of the sample as the Titanium increase. The (111) and (002) crystal plane are very low compare to (022) crystal plane. Crystallite size and micro strain are affected by addition of Titanium. Surface morphology are clearly affected by the addition of Titanium. Addition of Titanium causes corrosion behavior of the samples. It concludes that the aluminum alloy with different Titanium content in this research, can be used for making radiator combustion engine.
Cooling System Performance Comparison of Refrigerant R-134a and MC-134 on Ice Slush Machine Rizki Muliawan; Azel Adnal A; Tandi Sutandi; Nurrohman Nurrohman
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.9237

Abstract

Ice Slush Machine uses a direct cooling vapor compression system. The primary refrigerant used in such a system mostly is hydrofluorocarbons (HFCs), such as R134a. R134a is a retrofit for refrigerant R-12 which is included in the chlorofluorocarbon (CFC) type of refrigerant. CFC-type refrigerants have a dangerous impact on the environment. Hydrocarbon refrigerant MC-134 is an alternative for R-134a because it has a low potential value for environmental damage. The secondary refrigerant used was propylene glycol and the product used was 3.5 liters of Coca-Cola. From the test results when the system using R134a had an average COPactual and an average COPcarnot of 2.6 and 4.55, respectively, and the energy consumption was 1.571 kWh with an average efficiency of 57%, while in a system with MC-hydrocarbon refrigerant 134 obtained an average COPactual and an average COPcarnot of 2.8 and 4.5, respectively and the energy consumption of 1.325 kWh with an average efficiency of 62%. Therefore, MC-134a had COP actual greater than R-134 and electrical energy consumption of MC-134 was less than R-134a.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2021 2021


Reset
Filter By Issues
All Issue Vol 11, No 2 (2025): October Vol 11, No 1 (2025): April Vol 10, No 1 (2024): April Vol 9, No 2 (2023): October Volume 9, Issue 1, April 2023 Volume 8, Issue 2, October 2022 Volume 8, Issue 1, April 2022 Volume 7, Issue 2, October 2021 Volume 7, Issue 1, April 2021 Volume VI, Nomor 2, October 2020 Volume VI, Nomor 1, April 2020 Volume V Nomor 2, Oktober 2019 Volume V Nomor 1, April 2019 Volume IV Nomor 2, Oktober 2018 Volume IV Nomor 1, April 2018 Volume III Nomor 2, Oktober 2017 Volume III Nomor 1, April 2017 Volume II Nomor 2, November 2016 Volume II Nomor 1, April 2016 Volume I Nomor 2, November 2015 Volume I Nomor 1, April 2015 More Issue