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All Journal Jurnal Teknik Mesin Rotasi Rekayasa Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi DINAMIKA Jurnal Ilmiah Teknik Mesin Jurnal Rekayasa Mesin Jurnal Pendidikan Teknik Mesin Turbo : Jurnal Program Studi Teknik Mesin JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Journal of Energy, Mechanical, Material and Manufacturing Engineering INTEK: Jurnal Penelitian Barometer Jurnal Teknik Mesin Jurnal Mesin Nusantara Malikussaleh Journal of Mechanical Science Technology Al-Ijtima: Jurnal Pengabdian Kepada Masyarakat Jurnal Inovasi Teknologi Terapan Trends in Mechanical Engineering Research Al-Ijtimā: Jurnal Pengabdian Kepada Masyarakat

Saefuloh, Iman

Jurusan Teknik Mesin Fakultas Teknik Universitas Sultan Ageng Tirtayasa

Author-ID : 2856488

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering 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 Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Pengaruh Proses Quenching Dan Tempering Terhadap Sifat Mekanik Dan Struktur Mikro Baja Karbon Rendah Dengan Paduan Laterit Iman Saefuloh; Haryadi Haryadi; Abdurrofi Zahrawani; Bintang Adjiantoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume IV Nomor 1, April 2018
Publisher : Universitas Sultan Ageng Tirtayasa

Kemajuan teknologi membuat produksi baja nasional terus dikembangkan dengan bahan baku yang lebih baik. Pada Penelitian ini dikembangkan baja berkualitas unggul dari biji nikel (Limonit). Disebut bahwa, Limonit ini di produksi melalui endapan bijih besi laterit yang merupakan lapisan atas dari saprolit (bijih nikel kadar tinggi). Dengan proses pengolahan kandungan Limonit melalui inovasi tersendiri, pengembangan yang menghasilkan sifat baja yang unggul. Untuk mengetahui lebih lanjut tentang keunggulan baja Laterit, dilakukan penelitian terhadap pengaruh unsur didalam baja Laterit. Dengan melakukan proses heat treatment (quenching dan tempering) dapat meningkatkan sifat mekanik dan struktur mikro pada baja laterit. Dengan beberapa analisis pengujian yaitu uji kekerasan, uji impak dan perubahan struktur mikro. Pada uji kekerasan quenching air memeliki kekerasan tertinggi 459,7 HV. Pada uji impak quenching udara tempering 300oC memeliki nilai impak tertinggi 1,625 J/mm2. Pada pengujian metalografi perubahan struktur mikro yang terbentuk adalah martensit,bainit,ferit,pearlite dan austenite sisa. Dan pada pengujian Scanning Electron Microscope (SEM) bentuk patahan yang terbentuk dari hasil uji impak adalah getas dan ulet

OPTIMASI PARAMETER PEMESINAN TANPA FLUIDA PENDINGIN TERHADAP MUTU BAJA AISI 1045 Haryadi Haryadi; Slamet Wiyono; Iman Saefullah; Muhamad Rizki Mutaqien
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 1, April 2017
Publisher : Universitas Sultan Ageng Tirtayasa

Dalam upaya meningkatkan penanganan masalah pencemaran lingkungan akibat limbah cairan pendingin, maka para pakar pemesinan merekomendasikan dengan dry maching. Pemesinan kering (Dry Machining) adalah proses pemesinan yang tidak mengunakan fluida pendingin dalam proses pemotonganya dengan tujuan untuk mengurangi pencemaran lingkungan akibat limbah cairan pendingin. Untuk mendapatkan nilai optimum maka perlu mengetahui dan mendapatkan setting yang paling optimum dari parameter-parameter proses dry machining. Dalam penelitian proses dry machining, pengaruh parameter dari putaran spindel, , radius pahat, gerak pemakanan dan kedalaman potong terhadap kekerasan, kekasaran dan akurasi dimensi. Empat parameter tersebut dianalisa dengan metode desain eksperimen fraktional faktorial dua level (2k-1), analisa data menggunakan statistik MINITAB 16. Analisa DOE menunjukkan bahwa pengaruh putaran spindel, , radius pahat, dan kedalaman potong mempunyai pengaruh yang signifikan terhadap kekerasan. Untuk putaran spindel, , radius pahat, gerak pemakanan dan kedalaman potong mempunyai pengaruh yang signifikan terhadap kekasaran permukaan Sedangkan untuk parameter yang berpengaruh signifikan ke akurasi dimensi yaitu kedalaman potong. Dengan menggunakan respon optimasi metode pendekatan nilai fungsi desirability menghasilkan kondisi setting parameter yang optimum dari level-level tiap faktor yakni untuk kekerasan putaran spindel 560 rpm, radius pahat 0.4 mm dan kedalaman potong 0.5, dengan nilai keinginan (desirability) untuk kekerasan sebesar 0.89216. Untuk kekasaran putaran spindel 800 rpm, radius pahat 0.8 mm, gerak pemakanan 0.05 mm/rev dan kedalaman potong 0.8 mm , dengan nilai keinginan (desirability) untuk kekasaran permukaan sebesar 0,93086 dan untuk uji akurasi dimensi hanya kedalaman pemakanan yang berpengaruh signifikan. Untuk nilai desirability akurasi dimensi 0.5=0.82639 dan yang 0.8=1.0000 yang menunjukkan bahwa nilai desirability dari kekerasan, kekasaran dan akurasi dimensi cukup baik dan target yang diperoleh telah sesuai dengan keinginan.

Studi mechanical properties dan struktur mikro hasil variasi temperatur dan waktu aging pada alumunium matrix composite (AMC) hasil proses stir casting dengan kandungan matrix Berlebih iman Saefuloh
Jurnal Mesin Nusantara Vol 1 No 2 (2018): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v1i2.13503

Alumunium matrix composite (AMC) banyak digunakan sebagai bahan di banyak bidang (otomotif, pertambangan, penerbangan, pertahanan) karena ringan, dipilih sebagai material ini ringan dan relatif murah dan mudah difabrikasi. Proses pembuatan AMC tidak mudah karena matrik dapat membentuk gumpalan. Proses Stir casting dipilih dalam proses ini karena dapat menghasilkan AMC lebih merata dan dapat memecah gumpalan tersebut. Setelah stir casting dilakukan proses perlakuan panas aging agar material hasil lebih baik. Penelitian ini bertujuan menggunakan alumunium sebagai matrik dan senyawa karbida SiC sebagai penguat dengan proses aging suhu 1000C dan 2000C dengan waktu penahanan selama 1, 2, 3 dan 4 jam untuk meningkatkan mechanical properties dan memperbaiki struktur mikro. Setelah melalui proses pengujian didapatkan waktu aging berpengaruh terhadap mechanical properties yang di hasilkan, semakin lama waktu aging semakin besar pula kenaikan mechanical properties, untuk nilai kekuatan tarik naik sampai 70% dan kekerasan naik sampai 31%.

PENGARUH TEMPERATUR PELAPISAN DAN KEKASARAN PERMUKAAN TERHADAP LAJU KOROSI LAPISAN ELECTROLESS NI-P BAJA KARBON RENDAH ASTM A36 Iman Saefuloh; Ipick Setiawan; Sunardi Sunardi; Miftahul Jannah; Rina Lusiani
Jurnal Dinamika Vokasional Teknik Mesin Vol. 6 No. 2 (2021): Oktober
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v6i2.44135

Pemakaian bahan baja karbon rendah ASTM A36 sebagai bahan dasar bangunan konstruksi pipa dan tanki yang dimodifikasi menggunakan proses pelapisan Electroless Ni-P. Proses ini bertujuan untuk meningkatkan sifat-sifat yang harus dimiliki oleh plat baja ASTM A36 dari ketahanan korosinya. Dengan variasi temperatur pelapisan dan kekasaran permukaan serta penambahan proses perlakuan panas, karakteristik lapisan electroless Ni-P berupa nilai laju korosi, kekerasan, struktur mikro dan persentase kandungan nikel dianalisis. Dengan variasi kekaasaran permukaan 0,28 ðœ‡ð‘š, 0,15 ðœ‡ð‘š dan 0,07 ðœ‡ð‘š serta variasi temperatur pelapisan 60º C, 70º C dan 80º C dan dengan penambahan perlakuan panas 500º C selama 120 menit. Hasil pengujian menunjukkan bahwa semakin kasar permukaan dan semakin tinggi temperatur pelapisan menyebabkan lapisan tersebut memiliki nilai ketahanan korosi yang lebih baik. Proses perlakuan panas 500º C selama 120 menit meningkatkan nilai ketahanan korosi secara signifikan tetapi tidak dapat meningkatkan uji kekerasan rockwell secara signifikan tetap berada di kisaran 70-80 HRB.

PEMANFAATAN EKSTRAK PUNTUNG ROKOK MENGGUNAKAN METODE ULTRASONIC BATH SEBAGAI PENGENDALI LAJU KOROSI PADA BAJA API 5L Muhammad Nurul Huda; Iman Saefuloh; Nufus Kanani
BAROMETER Vol 6 No 1 (2021): Barometer
Publisher : Fakultas Teknik, Universitas Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35261/barometer.v6i1.4619

Dengan memanfaatkan bahan alami seperti puntung rokok sebagai upaya untuk mengurangi limbah dan juga dapat dimanfaatkan sebagai inhibitor untuk mencegah laju korosi. Penelitian metode yang digunakan adalah ultrasonic bath sebagai metode ekstraksi serta kehilangan berat untuk menentukan laju korosi dan nilai efisiensinya. Penelitian ini dilakukan untuk mengurangi laju korosi pada Baja API 5L menggunakan ektrak puntung rokok dengan konsentrasi inhibitor 1%; 3%; 5%; 7%; dan 9% dan tanpa inhibitor. Untuk medium korosi yang digunakan adalah NaCl dan HCl. Sampel direndam dalam medium korosi dengan penambahan inhibitor dan non-inhibitor. Lama perendaman yaitu 10 hari. Laju korosi berkurang seiring dengan penambahan konsentrasi inhibitor ektrak puntung rokok. Nilai efisiensi terhitung mencapai 98% pada medium korosi NaCl dan 81% pada medium korosi HCl dengan konsentrasi inhibitor sebanyak 9%.

Tribological and Thermal Characteristics of Organic Brake Pads Using Rubber Seed Shell and Rubber Fruit Shell as Filler Brian Laksana Gemilang; Rina Lusiani; Iman Saefuloh; Sunardi Sunardi (ScopusID:57208466308)
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 8, Issue 1, April 2022
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.14866

The Badan Pusat Statistik (BPS) data for 2021 shows that the total rubber production in Indonesia reached 2.877,90 tons. The high amount of rubber production will accompany many by-products, such as rubber seed shells and fruit shells. These materials have not been widely used for commercial purposes. This research will use rubber seed shells and fruit shells as brake pad filler. These materials are expected to replace brake pads that still contain asbestos, even though asbestos harms human health. Brake pads are manufactured using the cold press method, which has a composition is 60% epoxy resin, 35% filler, and 5% nylon fiber. The observed characteristics of the organic brake pad are mechanical, tribological, and thermal behavior using rubber seed shell and fruit shell fillers. This research conducted several results. Both friction coefficient values have met the performance values of the standard commercial brake pad material. The rubber seed shell has better wear resistance as filler in brake pad material than fruit shells. The type of wear for rubber seed shells is abrasive wear. The thermal analysis shows that the decomposition temperature of the rubber fruit shell is higher than the rubber seed shell.

Pengembangan Material Maju Superkonduktor Mg-B dengan Penambahan Graphene Oxide melalui Proses Powder in Sealed Tube Brillian Ardy Mahendra; Satrio Herbirowo; Iman Saefuloh; Murni Handayani
Jurnal Mesin Nusantara Vol 5 No 1 (2022): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v5i1.17894

MgB2 is a high possible superconducting material that can be applied quite practically with the functionalization of Mg-B materials. Material development is carried out by adding carbon, namely Graphene Oxide (GO), which is a single atom layered material. The Powder in Sealed Tube (PIST) method is practically used to reduce oxidation. This study aims to analyze the effect of GO material doped with the PIST method made from MgB2 with a sintering temperature of 800℃ for 2 hours on its superconductivity, compound formation, and microstructure. The manufacturing process is carried out in a 1:2 ratio where 98% purity Mg is mixed with Boron, which is then added with 0, 0.3 and 3% wt GO doping, all ingredients are mixed stoichiometrically. The material that has been put in a tube and compacted sufficiently into SS316L which has been closed on one side to enter the powder, is then compacted with high pressure up to 1000 MPa. The material is sintered at a temperature of 800℃ for 2 hours which is then carried out by cooling in the furnace and taking bulk samples. The XRD results showed the formation of the dominant MgB2 phase and the formation of an impurity phase in the form of MgO and obtained a decent crystal size of 295 which was owned by the 3%wt GO PIST MgB2 sample. The SEM test shows the forms of formation (agglomeration) in each sample, with the presence of several axes. Cryogenic testing shows that with doping there is a movement of critical temperature to a lower direction where MgB2 0%wt GO has a TcOnset value of 39.4 K and a TcZero of 38.7 K, while MgB2 3%wt GO has a TcOnset value of 39.6 K and TcZero of 38 K.

Analisa Karakterisasi Baja Paduan As-Cast-Fe-Cr-Mn-Mo Dengan Komposisi Nikel Terhadap Sifat Mekanik Dan Struktur Mikro Hasil Uji Balistik Daryl Deskianto Harna
Jurnal Mesin Nusantara Vol 5 No 1 (2022): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v5i1.17906

Lateritic steel is a low-nickel steel with a nickel content of 1-4.5 percent. Steel with a high nickel percentage has better qualities like high strength, corrosion resistance, and weldability. This material is commonly used in crushers and grinding machines. This material can also be utilized as an armor material. A study was undertaken to investigate the ability of laterite steel to be employed as armor material by characteristic testing (impact test and hardness test) and microstructure (metallography) of laterite steel. ASTM standards must be followed in the preparation of all samples. The impact test was performed on 9 samples from 3 specimens, with each sample being placed on an anvil and pounded with a pendulum that the average values of samples A, B, and D were 11 J, 9 J, and 12 J, respectively. The fractures were granular, indicating that the material is extremely fragile. The hardness test was then performed using the Vickers method with a 5 Kgf load. The polished sample is placed immediately on a vise, and then a diamond-shaped indenter is attached; the hardness test value is determined by the size of the trace of the indenter, with the average values of samples A, B, and D being 292.63 HVN, 310.47 HVN, and 464.87 HVN, respectively. Microstructure measurements revealed that sample A formed ferrite perlite, sample B formed lower bainite, and sample D formed martensite phase.

Pengembangan Baja Paduan Tahan Peluru Melalui Proses Hot-Forging Terhadap Morfologi Dan Sifat Mekanik Ilham Nugrahatama Putra
Jurnal Mesin Nusantara Vol 5 No 1 (2022): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v5i1.17947

Laterite steel is steel that has a nickel content of up to 2%. The nickel content can produce steel with superior properties such as: high strength, corrosion resistance, and good weldability properties. With the superior nature of laterite steel is needed in the main tool of the indonesian national tantara weapon system. To find out the performance of damage to bulletproof materials, then conducted research on this laterite steel as a tough armour material by conducting research in the form of mechanical properties testing (Hardness, and Impact) and microstructures (Metalography). Samples are prepared in accordance with ASTM standardization. Based on the results of the hardness test, the average values of F and T samples were 663.9 HVN and 170.7 HVN. Material F qualifies as a ballistic resistant material (armour) because the hardness obtained in accordance with the classification and can withstand bullet penetration well. Then the impact test obtained the average value of the F and T samples is 9 joules and 148 joules. For F samples, the type of fault is a granular fracture and a T sample of the type of fault is a tenacious fracture. As a result of metallographics, sample F has a corrected phase is upper bainite as a matrix and martensite is generally shaped like a fine needle. Then the T sample has a formed phase is dominated by ferrite with soft and tenacious properties. As well as perlite as a matrix with quite hard and strong properties.

Karakteristik Sifat Mekanik Hasil Pengelasan Gesek Aluminium dengan Tembaga Menggunakan Variasi Kecepatan Putar dan Kekasaran Permukaan Kontak Iman - Saefuloh; Ipick Setiawan; S Sunardi; Rina Lusiani; S Suryana
Malikussaleh Journal of Mechanical Science and Technology Vol 6, No 3 (2022): Malikussaleh Journal of Mechanical Science and Technology
Publisher : Malikussaleh University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v6i3.10301

Friction welding is a type of welding that is used for a variety of materials. Friction welding is a method of joining two materials by swiping them together until they reach some of the melting points of the materials to be joined, then applying constant pressure. Aluminum and copper are the materials to be joined in this study. Using rotational speed and contact surface roughness variations. The purpose of this research is to determine the mechanical properties of friction welding results between aluminum and copper. The speed settings are 1230, 1500, and 2500 rpm. Use sandpaper grades #100, #800, and #1500 to achieve different levels of surface roughness. According to the results of this study, the rotational speed with the highest tensile strength and hardness values is 1230 rpm, namely 59.6 MPa and 54.6 HVN (Al), 112.1 HVN (Al) (Cu). In terms of surface roughness variations, the surface roughness using grade #1500 sandpaper has the highest value, namely 54.18 HVN (Al), 112.1 HVN (Cu). And #100 sandpaper with a value of 52.48 Mpa. The results of the microstructure test in the weld joint area at a magnification of 1000x indicated that the friction welding of aluminum and copper was successful, as evidenced by the diffusion of aluminum and copper in this area.

Co-Authors Abdurrofi Zahrawani Achmad Nurhidayat Achmad, Zainuri Agung Sudrajad Agus Pramono Agus Pramono Ahmad Bahrul Ulum Ahmad Rifa’i Alhamidi, A. Ali Alhamidi, Ahmad A Aris Munandar Aswata Aswata Aziz, Abdul Bintang Adjiantoro Brian Laksana Gemilang Brillian Ardy Mahendra Burhani, Ichwan Caturwati , Ni Ketut Daris Miftah Dzaky Deprilen Dacha Dwinanto Dwinanto Edwin Prasetya Eko Surjadi Erni Listijorini Erny Listijorini Erwin, Erwin Gilang Aji Prayoga Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Hermawan Susanto Hesti Istiqlaliyah Hidayat, Rahmat Imron Rosyadi Imron Rosyadi Indah Uswatun Hasanah Ipick Setiawan Ipick Setiawan Ipick Setiawan Ipick Setiawan Ipik Setiawan Jannah, Miftahul Latief, Muhamad Listijorini , Erny Lusiani, Rina Lusiani, Rina Maulana Fazdri Miftahul Jannah Miftahul Jannah Moh. Fawaid Muhamad Rizki Mutaqien Muhamad, Ardani Muhammad Gema Winisuda Muhammad Nurul Huda Mujahid Mujahid Murni Handayani Ni Ketut Caturwati, Ni Ketut Notonegoro, Hamdan Akbar Notonegoro, Hamdan Akbar Nufus Kanani Oetomo, Pandoe Satria Panji Setyo Aji Permana Pinem, Mekro Pinem, Mekro Permana Putra, Rizky Kurnia Putra, Styven Handoyo Randu, Randu Rhaka Qudzsy Wening Praja Ricki Hikmatullah Rina Lusiani Rispan, Wahyu Rohmat, Agus Rosyadi , Imron Rosyadi, Imron S Sunardi S Suryana salman, Salman Satrio Herbirowo Shafnur Hamdi Shofiatul Ula Sidik Susilo sinarep, Sinarep Slamet Wiyono Slamet Wiyono Sudrajad, Agung Sunardi Sunardi Sunardi, Sunardi Sunardi, Sunardi Suryana, Suryana Syarif Abdullah Ula, Shofiatul Wahyudi, Hadi Wijoyo Wijoyo Wijoyo Wijoyo Willy Jamaludin Wiyono , Slamet Yuda Permana, Ananto Yusuf , Yusvardi Yusvardi Yusuf Zakaria Zakaria

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