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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Rekayasa Mesin JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Sinergi VANOS Journal of Mechanical Engineering Education Jurnal Teknik Mesin Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdi Masyarakat (JAM) Indonesian Journal for Social Responsibility International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) International Journal of Community Service Jurnal Abdimas ADPI Sains dan Teknologi Jurnal Rekayasa Energi dan Mekanika International Journal of Innovation in Mechanical Engineering and Advanced Materials Innovative: Journal Of Social Science Research AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Polimesin

Dafit Feriyanto

Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Mercu Buana, Jakarta, Indonesia

Author-ID : 567262

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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The Development of Fine Surface Roughness of FeCrAl Substrate by Gamma Alumina Coating Material Through Nickel Oxide Catalyst Dafit Feriyanto; S.S. Abdulmalik; Hadi Pranoto; Supaat Zakaria
International Journal of Advanced Technology in Mechanical, Mechatronics and Materials Vol 2, No 2 (2021)
Publisher : Institute for Research on Innovation and Industrial System (IRIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37869/ijatec.v2i2.46

The most commonly used method for protecting atmospherically exposed steel against corrosion, is the application of protective organic coating systems. It is widely recognized that the stability of the coating-substrate interface is related to the interfacial adhesion forces and electrochemical properties of this region. This study aim to develop fine surface roughness by ultrasonic and electroplating coating methods that applied for FeCrAl catalytic converter. This method consists of thwo methods which are ultrasonic bath that carried out by frequency of 35 kHz and various ultrasonic times of 1, 1.5, 2, 2.5 and 3 hours is imposed and the electroplating was conducted for several variation times of 15, 30, 45, 60 and 75 minutes, current density of 8 A/dm2. The result shows that the surface roughness of UB samples in between 0.11 to 0.21 µm, UBdEL samples of 0.81 to 2.17 µm, UB+EL samples of 0.64 to 1.63 µm and EL samples of 0.69 to 1.11 µm. The finest surface of each techniques are located at UB 1.5 h, UBdEL 45 minutes, UB 1.5 h+EL 30 minutes and UB 30 minutes. That data is supported by coating thickness of coated FeCrAl substrate where UB samples in between 2 -2.8 µm, UBdEL samples of 4.1 to 5 µm, UB+EL samples of 9.1 to 12 µm and EL samples of 6.2 to 11.3 µm.

New Method of Fabrication of Fe80Cr20 Alloy: Effect of its Technique on Crystallite Size and Thermal Stability Dafit Feriyanto; Supaat Zakaria
International Journal of Advanced Technology Vol 1, No 1 (2020)
Publisher : Institute for Research on Innovation and Industrial System (IRIS)

This paper focuses on the effect of the new method on the crystallite size and thermal stability of Fe80Cr20 alloy powder. Generally, the ball milling sample and ultrasonic technique sample have dissatisfaction result when applied at high temperature. In addition, the combination of both techniques not yet carried out. Therefore, this study aim to investigate an appropriate technique to produce smallest crystallite size in order to improve the thermal stability. The new method of mechanical alloying (mill) and ultrasonic technique (UT) were applied in order to reduce the crystallite size and improve thermal stability. The new method is called as combination treatment. This condition allows the enhancement of thermal stability of Fe80Cr20 alloy powder. In this study, mechanical alloying process was carried out by milling time of 60 hours. Then, the ultrasonic technique was performed at frequency of 35 kHz at 3, 3.5, 4, 4.5, and 5 hours. From XRD analysis, it was found that the broader peaks indicated the smaller crystallite size. It shows that the combination treatment (milled and UT) reduce the crystallite size up to 2.171 nm when mechanically alloyed for 60 hours (milled 60 h) and followed by ultrasonic treatment for 4.5 hours (UT 4.5 h). Smallest crystallite size enhance the thermal stability up to 12.7 mg which shown by TGA analysis during 1100 0C temperature operation. The combination treatment is method which is effective to fabricate Fe80Cr20 alloy powder.

NiO ELECTRO-DEPOSITION TECHNIQUE OF γ-Al2O3 WASHCOAT ON FeCrAl SUBSTRATE BY USING SULPHAMATE TYPE SOLUTION Dafit Feriyanto; A. M. Leman; Andi Firdaus Sudarma; Dedik Romahadi; Hadi Pranoto
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 4, No 1 (2022)
Publisher : Universitas Mercu Buana, Prodi S2 Teknik Mesin

Electro-deposition process to develop surface layer on the substrate material in Catalytic converter (CATCO) become interesting area due to that process was purposed to improve the physical properties of substrate material. Currently, precious metals such as Platinum (Pt), Palladium (Pd), and Rodium (Rd) were used due to excellent oxidation resistant but it limited and easily oxidized. Therefore, Nickel Oxide (NiO) catalyst used as electro-deposition material. NiO electro-deposition technique that called by EL was conducted by using NiO as cathode and FeCrAl as substrate and -Al2O3 as washcoat material. This technique was performed by variation times of 15, 30, 45, 60 and 75 minutes, current density of 8 A/dm2. The results shows that Coating layer of NiO and -Al2O3 has been developed on surface of FeCrAl substrate. The coating layer was increase the surface roughness which showed by surface morphology data that coated FeCrAl substrate has uneven surface and some particles has been embedded on that surface. The composition of raw material was consists of Fe for 74.13wt%, Cr of 20.25 wt% and Al of 5.62 wt%. Meanwhile, for composition of EL samples was 52.56- 63.54wt% for Fe element, Al for 3.56-11.89 wt%, Cr for 14.97-18.56 wt%, O for 2.47-11.78 wt%, C for 8.33-11.85 wt%, Na for 0.11-0.48 wt% and Ni for 0.17- 1.58 wt%. Higher elements of the EL samples potential to improve the thermal stability at high temperature due to CATCO operate at high temperature of 600-8500C and in extreme condition.

ANALISIS SISTEM PENDINGIN MENGGUNAKAN THERMOSTAT DAN TANPA THERMOSTAT DALAM PENCAPAIAN PANAS MESIN PADA ALAT UJI PRESTASI Dafit Feriyanto; Sagir Alva; Resista Vikaliana; Asep Setia Kristanto
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.757

The ideal working temperature of the engine is about 82 - 93 ⁰C. The engine cooling system is needed to reach and maintain the ideal working temperature of the engine. The engine cooling system is equipped with a thermostat to regulate the flow of cooling water to reach and maintain the temperature. A malfunctioning thermostat will disrupt the cooling system process that led the engine can be overheated. This study aims to analyze the cooling system with and without a thermostat to achieve the ideal working temperature and evaluate the heat distribution on the engine cooling system in the Hyundai Arya diesel engine type D4BB. The research was conducted by various rotations of 800 rpm, 1500 rpm, and 2500 rpm, and the data was collected every 10 minutes. The cooling system without a thermostat can not reach the ideal working temperature of the engine within 10 minutes. Meanwhile, with a thermostat, the ideal working temperature of the engine can be achieved in 9 minutes with an average engine temperature of 86.0 ⁰C at 800 rpm, in 6 minutes with an average engine temperature of 83.5 ⁰C at 1500 rpm, and within 4 minutes with an average engine temperature of 81.7 ⁰C at 2500 rpm. The heat released by the cooling system without a thermostat is less than using a thermostat, with an average of 55.7%. The engine cooling system with a thermostat in the engine cooling system and precise engine temperature control will make the ideal working temperature of the engine more quickly achieved and can be maintained as long as the engine is operated.

Innovative catalytic converter from FeCrAl material coated by γ-Al2O3 and NiCr for increasing thermal stability at high temperature operation Dafit Feriyanto; Zaenudin Zaenudin
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4268

The transportation sector plays a significant role in air pollution and the greenhouse gas effect. Therefore, the innovation of exhaust system component needs to be conducted to reduce those issues. The most effective technology is by using a catalytic converter have main function is to convert the exhaust emission. The main problemfaced by the previous study is the high degradation of FeCrAl material up to 19.58 mg at 1000oC. Therefore, the objective of this study is to develop a catalytic converter that has high thermal stability. This research was conducted by various coating processes which is Ultrasonic Bath (UB) and ultrasonic bath combined with electroplating (UB+EL) with parameters of UB consisting of frequency of 35 kHz, various holding times of 1, 1.5, 2, 2.5 and 3 hours while parameters in electroplating process are current density of 8 A/dm2 and holding time of 15, 30, 45, 60 and 75 minutes. That process was followed by a drying process at 60oC for 12 hours. The materials used in this research are FeCrAl as substrate, Ni as catalyst, γ-Al2O3 and Cr as wash-coat material. The results show that coating process coating process of γ-Al2O3 and NiCr on FeCrAl substrate succeeded in analysis proved by microstructure and composition analysis. The appropriate coating is shown by UB+EL 30 minute with the highest thermal stability of 2.85mg and reaction point is 0.07 mg/minute. Several compounds developed during the coating process such as in UB process develop FeCrAl, FeO, γ-Al2O3 and FeCr2O3 compounds and in the UB+EL process FeCrAl, FeO, γ-Al2O3, FeCr2O3, NiO, NaO2, NiAl2O4 and NiCr2O4 compounds. Therefore, UB+EL 30 minutes is the most parameters that are recommended to be applied due to the lowest mass degradation and more compounds.The transportation sector plays a significant role in air pollution and the greenhouse gas effect. Therefore, the innovation of exhaust system component needs to be conducted to reduce those issues. The most effective technology is by using a catalytic converter have main function is to convert the exhaust emission. The main problemfaced by the previous study is the high degradation of FeCrAl material up to 19.58 mg at 1000oC. Therefore, the objective of this study is to develop a catalytic converter that has high thermal stability. This research was conducted by various coating processes which is Ultrasonic Bath (UB) and ultrasonic bath combined with electroplating (UB+EL) with parameters of UB consisting of frequency of 35 kHz, various holding times of 1, 1.5, 2, 2.5 and 3 hours while parameters in electroplating process are current density of 8 A/dm2 and holding time of 15, 30, 45, 60 and 75 minutes. That process was followed by a drying process at 60oC for 12 hours. The materials used in this research are FeCrAl as substrate, Ni as catalyst, γ-Al2O3 and Cr as wash-coat material. The results show that coating process coating process of γ-Al2O3 and NiCr on FeCrAl substrate succeeded in analysis proved by microstructure and composition analysis. The appropriate coating is shown by UB+EL 30 minute with the highest thermal stability of 2.85mg and reaction point is 0.07 mg/minute. Several compounds developed during the coating process such as in UB process develop FeCrAl, FeO, γ-Al2O3 and FeCr2O3 compounds and in the UB+EL process FeCrAl, FeO, γ-Al2O3, FeCr2O3, NiO, NaO2, NiAl2O4 and NiCr2O4 compounds. Therefore, UB+EL 30 minutes is the most parameters that are recommended to be applied due to the lowest mass degradation and more compounds.

ANALISIS PENGARUH NANOFLUIDA HEAT TRANSFER OIL (HTO) / SiO2 DENGAN METODE TAGUCHI PADA PEMBUBUTAN MINIMUM QUANTITY LUBRICATION (MQL) BAJA ST 37 Raflan; Feriyanto, Dafit
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 10 No. 2 (2024)
Publisher : Universitas Ibn Khaldun Bogor

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

Peran cairan pemotong sangat vital dalam mengurangi panas di area permesinan, memberikan pelumasan, dan membantu penghilangan serpihan selama proses pemotongan logam. Minimum Quantity Lubrication (MQL) merupakan teknik permesinan ramah lingkungan yang mengurangi dampak penggunaan cairan pemotongan. Penelitian ini bertujuan menganalisa pengaruh nanofluida dengan Heat Transfer Oil (HTO)/SiO2 dalam sistem MQL pada proses pembubutan Baja Silinder ST 37. Nanopartikel SiO2 dengan ukuran 15 nm digunakan dengan konsentrasi 0.5% dan 1% yang dipersiapan menggunakan magnetic stirring selama 30 menit dan sonikasi selama 80 menit. Pengujian dilakukan dengan variasi spindle speed 310, 640, 970 dan 1300 rpm, feed rate 0.1, 0.15, 0.2, 0.25 mm, dan cooling condition Dry, HTO, HTO + 0.5 % SiO2, HTO + 1% SiO2 dengan depth of cut yang sama yaitu 0.5 mm sehingga terdapat 16 sampel dengan metode Taguchi matriks ortogonal L16 (43). Untuk cooling condition nanofluida kurang memiliki pengaruh untuk kekasaran permukaan, sedangkan untuk suhu pemotongan penggunaan nanofluida meningkatkan penurunan suhu sebesar 17.2%.

Applying Bayesian networks in making intelligent applications for static and dynamic unbalance diagnosis Romahadi, Dedik; Fitri, Muhamad; Feriyanto, Dafit; Hidayat, Imam; Imran, Muhammad
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 13, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v13.i1.pp174-184

One of the problems often encountered in vibration analysis is unbalanced or imbalanced, namely the occurrence of a shift in the center of mass from the center of rotation to cause high vibrations. Unbalance itself is divided into two, namely static and dynamic unbalance. Identification of the right type of unbalance must be done because each type of unbalance requires different handling. Therefore, this study aims to design a system to identify the type of unbalance based on the required parameters. The system design determines the input and then builds an algorithm by combining vibration analysis methods and Bayesian networks (BN). Systems and applications are built using MATLAB. After the application is finished, testing is carried out using vibration measurement data obtained from a demo machine that has previously been conditioned for damage. The BN method has been successfully applied to the unbalance diagnosis system. When there is evidence of large amplitude in 1X the frequency spectrum and the value of the static phase range, the percentage of static unbalance from 26.8% increases to 75%. The system can predict all testing data quickly and precisely for the six experiments.

Intelligent system design for identification of unbalance and misalignment using Fuzzy Logic methods Romahadi, Dedik; Feriyanto, Dafit; Anggara, Fajar; Wijaya, Fathoni Putra; Dong, Wang
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.004

Vibration analysis identifies emerging vibration problems before they become unmanageable and cause unforeseen delays. This can be accomplished by monitoring engine vibration continuously or at specific intervals. Unbalance is a common vibration issue caused by the center of mass shifting from the center of rotation, leading to misalignment and excessive vibration between shafts. To prevent this, manual monitoring is required, but it is time-consuming. Therefore, intelligent system monitoring is necessary to save time. Using a large amount of vibration, spectrum, and phase data as input, this project aims to develop a diagnostic application for motor problems based on vibration signals. Fuzzy logic is implemented in MATLAB software to process a considerable amount of input data for all vibrations, spectrums, and phases using the fuzzy logic method. A vibration meter is used to collect vibration data from the demonstration machine. All input data will be processed by the fuzzy system based on predefined fuzzy rules that must provide accurate results for the actual operating conditions of the demonstration machine. Conducting experiments will help the intelligent system correctly detect damage from misalignment and imbalance. The intelligent fuzzy logic system can accurately diagnose damage caused by misalignment and unbalance on the demonstration machine.

ANALISIS LAJU KOROSI BAJA KARBON MATERIAL 20G DAN A210 A1 Rajendra, Fajar Cahyadi; Feriyanto, Dafit
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 12, No 3 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v12i3.14884

Kualitas kimia feedwater pada siklus air dan uap tertutup harus dijaga sedemikian rupa sesuai standar yang telah ditetapkan untuk menjaga keandalan operasi pembangkit. Kebocoran pipa kondensor merupakan salah satu penyebab terjadinya kontaminasi air laut pada feedwater. Penelitian ini bertujuan untuk mengetahui nilai laju korosi terhadap lingkungan NaCl 3,5 % dan mengetahui bentuk struktur mikro material 20 G dan A210 A1. Penelitian dilakukan dengan menggunakan pengujian korosi polarisasi potensiodinamik pada rentang potensial -1000 mV s.d. 1000 mV dengan scan rate 5 mV/s, pengujian scanning electron microscope dan pengujian metalografi. Hasil pengujian korosi menunjukkan nilai laju korosi pada larutan NaCl 3,5 % material 20G sebesar 0,00018328 mmpy dan material A210 A1 sebesar 0,00011301 mmpy. Ketahanan korosi material A210 A1 lebih baik dari material 20G karena memiliki kandungan kromium (Cr) sebesar 0,0408% dan nikel (Ni) sebesar 0,0271%. Hasil penelitian ini menunjukkan bahwa material A210 A1 lebih baik dari 20G dalam ketahanan terhadap korosi

Studi Komparatif Pengaruh Asam Fosfat terhadap Sifat Fisik dan Mekanik NR dan EPDM Octaviani, Ana Nur; Feriyanto, Dafit; Kurniawan, Kurniawan; Arti, Dewi Kusuma; Nur, Hery
Jurnal Rekayasa Energi dan Mekanika Vol 4, No 2 (2024): JREM
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/JREM.v4i2.146

Natural Rubber (NR) dan Ethylene Propylene Diene Monomer (EPDM) adalah material karet yang banyak digunakan dalam komponen otomotif seperti bushing karena sifat elastisitas dan daya tahannya. Namun, paparan bahan kimia agresif seperti asam fosfat dapat memengaruhi sifat mekanik dan fisik kedua material ini. Penelitian ini bertujuan untuk mengevaluasi pengaruh perendaman dalam larutan asam fosfat dengan konsentrasi 13% terhadap kekuatan tarik, kekerasan, dan struktur mikro NR dan EPDM. Hasil pengujian menggunakan Mesin (UTM) Universal Testing Machine menunjukkan bahwa NR mengalami penurunan pada kekuatan tarik tegangannya NR sebesar 20,44% dan EPDM sekitar 23,8% setelah perendaman,dan untuk nilai regangannya penurunan NR sebesar 38,3% dan EPDM sekitar 17,43% disebabkan oleh degradasi rantai polimernya. Penurunan kekerasan NR yang diuhi menggunakan Shore A mencapai 19,2%, sedangkan EPDM hanya sekitar 4,81%. Hasil struktur mikro dengan perbesaran 20x, 50x dan 100x dari kedua jenis karet pun menunjukkan bahwa tidak banyak perubahan yang dapat teramati. Temuan ini mengindikasikan bahwa EPDM lebih unggul dalam aplikasi yang melibatkan paparan bahan kimia seperti asam fosfat, menjadikannya pilihan yang lebih sesuai untuk bushing dalam lingkungan kerja yang agresif.

Co-Authors A. M. Leman A.N. Aizat Ahmad A.N. Aizat Ahmad, A.N. Aizat Abdi Wahab Abdi Wahab Abdi Wahab Abdul Mutalib Leman Abdulmalik, Samir Sani Adinarto, Tri Wahyu Agung Wahyudi Biantoro Albert Phak Jie Wong Andi Adriansyah Andi Adriansyah Andi Adriansyah Andi Adriansyah Andi Firdaus Sudarma Anggara, Fajar Annisa Hakim Zamzami Asep Setia Kristanto Ayu Arwati, I G. Chollacoop, Nuwong Darwin Sebayang Dedik Romahadi Deni Shidqi Khaerudini Dewi Kusuma Arti Dian Primanita Oktasari Dwilestari, Charisma Elly Yuliawati Erna Setiany Feleke, Aberham Genetu Firmansyah, Mohamad Ardy Fitri , Muhammad Fransisca Listyaningsih Utami Gerald Ensang Timuda Ginting, Dianta Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hafidz IH, Muhammad Hari Setiyawati Himma Firdaus Imam Hidayat istiqomah istiqomah Julpri Andika Kurniawan Kurniawan Leman, Abdul Mutalib Listyaningsih, Fransiska M. Azizi Mohamad Abror Muhamad Fitri Muhammad Imran Nanang Ruhyat Nono Darsono, Nono Noviyanto, Alvian Nur, Hery Nurato , Nurato Nurato Nurato Nurato Nurato, Nurato NURUL HIDAYAH Octaviani, Ana Nur Pradipta, Nanang K. Pratiwi, Riri R Dwi Pudji Susilo Rachmanu, Fatkur Radityan, Fatwa Tresna Raflan Rahayu, Muthia Rajendra, Fajar Cahyadi Ramadhan, Kurnia Resista Vikaliana Rizki Briandana Romahadi, Dedik S.S. Abdulmalik S.S. Abdulmalik Sagir Alva Siang, Alan Ooi Lim Sidik, Muhamad Afifi Muhamad Sulaiman Hj. Hasan Sulaiman Hj. Hasan, Sulaiman Hj. Supaat Zakaria Supaat Zakaria Supaat Zakaria Supaat Zakaria Supaat Zakaria Wang Dong Wijaya, Fathoni Putra Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Yananto Mihadi Putra Zaenudin Zaenudin Zakaria, Supaat Zakaria, Supaat

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