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All Journal TEKNIK Jurnal Ilmu Dasar Jurnal Simetris Jurnal Pengembangan Pendidikan Jurnal Teknosains Jurnal Teknologi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Rekayasa Mesin Sinergi Journal of Engineering and Technological Sciences REKAYASA ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Litbang Industri EMITTER International Journal of Engineering Technology R.E.M (Rekyasa Energi Manufaktur) Jurnal Journal of Mechanical Engineering Science and Technology Panrita Abdi - Jurnal Pengabdian pada Masyarakat Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Multitek Indonesia : Jurnal Ilmiah Jurnal Elemen ComTech: Computer, Mathematics and Engineering Applications Jurnal Teknologi Informasi dan Pendidikan Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Riset Teknologi Industri J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin JURMA : Jurnal Program Mahasiswa Kreatif Jurnal Abdi Masyarakat Indonesia Jurnal Litbang Industri National Multidisciplinary Sciences Jurnal Polimesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Mahros Darsin
Jurusan Teknik Mesin Fakultas Teknik Universitas Jember
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Effect of Temperature, Holding Time, and Addition of Sn on Density on Metal Injection Molding Sintering Process Wardatul Jannah; Danang Yudistiro; Mochamad Asrofi; Mahros Darsin; Ahmad Rendi Maulana
Journal of Engineering and Technological Sciences Vol. 55 No. 2 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.2.4

Abstract

Metal injection molding (MIM) is a metal forming technique that combines powder metallurgy with plastic injection molding. MIM is very efficient in manufacturing small and complex products in large quantities. The MIM process has four steps: mixing, debinding, injection molding, and sintering. This research was conducted to determine the effect of variations in Sn addition, temperature, and holding time on the density of Al-PP products after the sintering process. Density is mass per volume so to find out the volume of Al-PP products, the use of a 3D scanner was attempted along with the EinScan application and a mesh mixer. The Taguchi method was used for data processing to determine the influence of variations in Sn addition, temperature, and holding time on density. The calculation of the percentage contribution showed that variations in Sn addition, temperature, and holding time affected density by 47%, 21%, and 3%. Also, 2% Sn addition yielded a reasonably good microstructure formation compared to without Sn addition and 1% Sn addition, where many voids remained in the specimen (the more significant the voids, the lower the density).
Studi Kecepatan Pembakaran Laminar dan Tinggi Api Premix Avgas 100 LL dengan Variasi Ekuivalen Rasio Nasrullah, Muhammad Nur Cahyo Hidayat; Kustanto, Muh Nurkoyim; Darsin, Mahros; Ilminnafik, Nasrul; Syuhri, Skriptyan Noor Hidayatullah
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.2952

Abstract

Aviation gasoline atau yang umum disebut dengan avgas merupakan bahan bakar bagi pesawat dengan mesin piston. Pesawat tipe ini pada umumnya banyak digunakan untuk pelatihan terbang hingga untuk penyemprotan tanaman. Banyak peneliti yang telah membahas mengenai bahan bakar ini. Namun, masih belum ditemukan mengenai pengujian kecepatan pembakaran (SL) dan tinggi api laminar premix menggunakan metode bunsen burner. Oleh karena itu penelitian ini membahas mengenai studi kecepatan pembakaran laminar dan tinggi api premix avgas 100 LL dengan memvariasikan ekuivalen rasio dari 0,8; 1,0 dan 1,2. Pada penelitian ini ditemukan bahwa kecepatan pembakaran tertinggi didapatkan pada ekuivalen rasio 1,0 yakni 49,31 cm/detik. Namun pada pengujian tinggi api, ekuivalen rasio 1,0 menghasilkan nilai tingi api terendah yakni 6,303 mm. Hal ini disebabkan karena nilai maksimum kecepatan pembakaran umumnya tercapai pada rasio stoikiometrik, yang menandakan saat bahan bakar dan udara dicampur dalam proporsi yang tepat untuk pembakaran sempurna. Dengan pembakaran campuran bahan bakar-udara yang mendekati stokiometri ini maka menyebabkan nilai tinggi api semakin rendah. Fenomena ini terjadi karena tinggi api terkait erat dengan konsumsi penuh uap bahan bakar, Sehingga, tinggi api mencapai titik akhir ketika semua bahan bakar yang menguap telah terbakar habis.
STUDI KARAKTERISTIK NILAI ROLLING RESISTANCE PADA PRODUK SINGLE ROW DEEP GROOVE BALL BEARING TIPE 6000 Prakoso, Muhammad Ihsan; Jatisukamto, Gaguk; Darsin, Mahros; Asrofi, M; Triono, Agus
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 1 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Rolling resistance in bearings is rolling resistance in bearings that move rolling without sliding. The amount of rolling resistance force occurs depending on the magnitude of the coefficient of friction between the ball bearing and the outer and inner surfaces of the bearing. This research is in the form of testing the characteristics of rolling resistance values by experimental methods when given variations in rotational speed parameters and radial load variations. The results of research on single row deep groove ball bearing type 6000 with 207 Newton loading at 300 rpm rotation showed a rolling resistance value of 1.0823 Newton.
OPTIMASI MESIN PULPER SILINDER GANDA (PUL-1K) TERHADAP KUALITAS PENGUPASAN KOPI DENGAN METODE BOX BEHNKEN DESIGN Ali, Muhammad Mukti; Hermawan, Yuni; Jatisukamto, Gaguk; Darsin, Mahros; ,, Sumarji; Hardiatama, Intan
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

The expansion of plantation area increased by 74.33% with a growth rate of 1.61%, in 1980 the area of coffee plantation area was 707,464 ha, while in 2016 the area was 1,233,294 ha. The majority of the coffee cherries produced are robusta coffee cherries and grow at an altitude of 400-700 m above sea level with a temperature of 21-24ºC. A wet coffee berry skin peeler is used to separate the coffee fruit skin, the stripping quality results depend on the use of shaft rotation and the gaps of the peelers, and the gaps of the hoppers. Experimental testing method using the Behnken box design method using shaft rotation of 300 rpm, 400 rpm, and 500 rpm, gaps of the peelers 3 mm, 4 mm, and 5 mm, and 5 cm, 7 cm, and 9 cm of hopper gaps. The gaps of the hoppers has the greatest impact on the results of stripping quality with the smallest P-Value of 0.001 and the largest T-Value of -6.66. The best stripping quality results were obtained in the 6th experiment with shaft rotation of 400 rpm, 3 mm gaps of the peelers, and 5 cm hopper spacing with a stripping value of 87.5%. The predicted variant of the shaft rotation factor is 382.828 rpm, the gaps of the peelers is 3 mm, and the gaps of the hoppers is 5 cm. It is predicted that the results of the stripping quality will reach 88.16%
The Effect of Nozzle Temperature, Infill Geometry, Layer Height and Fan Speed on Roughness Surface in PETG Filament Taqdissillah, Doohan; Muttaqin, Aris Zainul; Darsin, Mahros; Dwilaksana, Dedi; Ilminnafik, Nasrul
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 6, No 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v6i22022p074

Abstract

3D printing is a process of making three-dimensional solid objects from a digital file process created by laying down successive layers of material until the object is created. Many filaments can be used in 3D printing, one of which is PETG (PolyEthylene Terephthalate Glycol). PETG is a modification of PET (PolyEthylene Terephthalate) with added glycol at a molecular level to offer different chemical properties that provide significant chemical resistance, durability, and excellent formability for manufacturing. This study aims to find the most optimal parameter of surface roughness of PETG with different parameters of nozzle temperature, infill geometry, layer height and fan speed. Taguchi L16 (44), with four levels for each parameter, was used to determine the effect of each parameter. Each experiment was repeated five times to minimize the occurrence of errors. Based on the result, the effect of each parameter is nozzle temperature at 4.9%, infill geometry at 5.9%, layer height at 82.3%, and fan speed at 4.6%. Layer height has the highest effect on surface roughness, and other parameters have a low effect, under 7%. Research shows that the optimal combination of parameters is a nozzle temperature of 220 °C, infill geometry zig-zag, layer height of 0.12 mm, and a fan speed of 80 %.
Implementation of Internet of Things (IoT) in a Plastic Blow Moulding Machine and Its Performance Measurement Faqih, Muhammad Fadhlurrohman; Darsin, Mahros; iMuttaqin, Aris Zainul; Yudistiro, Danang
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i22021p096

Abstract

Efficiency and effectiveness are indispensable things in the production process. Accurate use of existing resources and the shorter cycle time of production are of particular concern to optimize the production process. This research aims to implement automation to a conventional blow molding. An advanced attempt was carried out to use the Internet of Things (IoT) to increase its efficiency while maintaining the quality of the products. The use of the nodeMCU microcontroller and the blynk application allows the operator to operate the machine without having to come into or having direct contact with the machine. The performance of automation and IoT were tested by examining the products using Taguchi design using quality criteria of nominal the best. The efficiency of the system was also considered by comparing the cycle production time. S/N ratio of Taguchi analysis showed that the optimum volume of the bottle would be achieved when applying the temperature, injection time, and holding time of 190 oC, 14 minutes, and 5 minutes respectively. The error or deviation is only 0.41%. The application of the IoT system takes 34.45 seconds for a cycle time production, which is 3.76 seconds faster than a conventional system.
Kecepatan Pembakaran Laminar dan Tinggi Api Premix pada Campuran Pertamax-Avgas dengan Etanol Nur Cahyo Hidayat Nasrullah, Muhammad; Nurkoyim Kustanto, Muh; Darsin, Mahros; Ilminnafik, Nasrul; Noor Hidayatullah Syuhri, Skriptyan
National Multidisciplinary Sciences Vol. 3 No. 1 (2024): PROCEEDING SEMAKIN E.1
Publisher : Universitas Muhammadiyah Jember

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Abstract

Bahan bakar penerbangan yang umum digunakan untuk pesawat dengan tipe mesin reciprocating adalah avgas 100 LL. Keandalan penggunaan bahan bakar ini masih belum tergantikan, khususnya di daerah Indonesia. Pada umumnya avgas menggunakan zat aditif berbahaya berupa tetraethyl lead atau timbal untuk meningkatkan performa bahan bakar ini. Meskipun dapat meningkatkan performa, zat aditif ini terkenal menjadi cancer agent hingga penyebab penurunan IQ akademik pada anak-anak. Beberapa penelitian untuk mengurangi penggunaan timbal pada bahan bakar penerbangan sudah beberapa kali dibahas oleh para peneliti, salah satunya dengan mencampurkan avgas dengan bahan bakar konvensional tanpa timbal. Namun jarang yang membahas mengenai kecepatan pembakaran laminar (SL) pada topik tersebut. Artikel ini bertujuan untuk mengetahui dampak pencampuran bahan bakar avgas dengan pertamax serta penambahan etanol, serta variasi nosel burner terhadap kecepatan pembakaran laminar (SL) dan tinggi api premix yang dihasilkan pada rasio ekuivalen 0,8; 1,0; dan 1,2. Metode bunsen burner dipilih sebagai alat pengujian, karena dinilai simpel dan memiliki hasil yang cukup akurat. Dari pengujian yang dilakukan etanol memiliki nilai S­L tertinggi. Campuran avgas dan pertamax memiliki kecepatan pembakaran yang lebih rendah dibanding avgas 100 LL murni, namun lebih tinggi dari pada pertamax murni. Sebaliknya hasil tinggi api berbanding terbalik. Namun dapat diketahui bahwa penambahan volume 30% etanol pada campuran terbukti meningkatkan kecepatan pembakaran yang dihasilkan. Selain data dari variasi bahan bakar, pengujian juga dilakukan dengan variasi diameter nosel. Dapat diketahui bahwa diameter nosel mempengaruhi nilai SL.
Hardness and microstructure of FDM 3D printed parts using self-made PLA-brass filaments Darsin, Mahros; Ramadhan, Ivan Fadilla; Sumarji, Sumarji; Dwilaksana, Dedi; Sutjahjono, Hary; Ales, Steve Korakan
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.001

Abstract

Technological advancements in the industrial sector have led to rapid developments in 3D printing technology, enabling the creation of three-dimensional prototype models. Various filaments, including polyethylene terephthalate glycol, nylon, and polylactic acid, have been widely adopted in the industry. However, filaments composed of metal mixtures are relatively scarce in Indonesia, primarily available only through select online shops worldwide. The production and sale of such filaments present lucrative opportunities within the manufacturing industry. In this research, an experimental study was conducted to examine the hardness of test specimens fabricated using PLA-brass filament. The objective was to identify the optimal hardness value of the specimens. The study focused on three key parameters: nozzle temperature, layer height, and print speed, each at two different levels. The Taguchi L4(2³) experimental design was employed, along with S/N ratio and ANOVA analysis, to evaluate the results. The findings revealed that specific combinations of parameters yield favorable hardness values, as determined by the Taguchi Method. The optimal set of parameters for achieving good hardness values was determined to be a nozzle temperature of 230°C, a layer height of 0.2 mm, and a print speed of 40 mm/s. These results enhance the understanding of PLA-brass filament properties and facilitate the utilization of 3D printing technology in the manufacturing industry. 
KUAT BENDING, FRAKTOGRAFI, DAN STRUKTUR MIKRO HASIL 3D PRINTING BERBAHAN PLA (POLYLACTIC ACID) - TITANIUM Darsin, Mahros; Ismono, Firman Ema; Asrofi, Mochamad; Hermawan , Yuni; Hardiatama , Intan
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1631

Abstract

Manufacturing technology has experienced significant progress with various innovations, including 3D printing. In this study, an innovation was made using a filament made of PLA 60% and titanium 40%. Bending tests are carried out to determine the combination of 3D printing parameters that can produce the most optimal bending strength. This study uses the Taguchi method orthogonal matrix L4(23). The data is processed using Analysis of Variance (ANOVA). The parameters that produce optimal bending strength values are a nozzle temperature of 230 ⁰C, a print speed of 20 mm/s, and a layer height of 0.3 mm, with the highest bending strength value of 7.13 MPa and the lowest of 2.16 MPa. The factors that contributed significantly to the bending strength results were nozzle temperature of 52.84 %, print speed of 15.91 %, and layer height of 1.80 %.
Heat Treatment and Its Effect on Tensile Strength of Fused Deposition Modeling 3D-Printed Titanium-Polylactic Acid (PLA) Darsin, Mahros; Susanti, Rizqa Putri; Sumarji, Sumarji; Ramadhan, Mochamad Edoward; Sidartawan, Robertus; Yudistiro, Danang; Basuki, Hari Arbiantara; Wibowo, Robertoes Koekoeh Koentjoro; Djumhariyanto, Dwi
ComTech: Computer, Mathematics and Engineering Applications Vol. 15 No. 2 (2024): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v15i2.11255

Abstract

Titanium is a biocompatible metal commonly applied in biomedical fields such as bone and dental implants. Recently, the produced titanium-Polylactic Acid (PLA) filament for 3D printing Fused Deposition Modeling (FDM) technique is easier to operate and affordable. This filament contains less than 20% PLA, which is also biocompatible but hydrophobic and capable of producing inflammation of the surrounding artificial living tissue. Therefore, a heat treatment is needed to reduce or even eliminate PLA. The research aimed to optimize the mechanical properties and biocompatibility of titanium-PLA filaments through heat treatment, demonstrating significant advancements in 3D printing applications for biocompatible materials. A Thermogravimetric Analysis (TGA) was carried out to find out the right temperature for reducing PLA levels. Specimens were heat treated with four temperatures at 100oC, 160oC, 190oC, and 543oC, and two holding times of 60 and 120 minutes. The mass of the specimens was weighed before and after heat treatment to determine the mass reduction and tested for tensile, micrograph, and fractography observation. The result is a meagre mass reduction. The highest tensile strength of the heat-treated specimen with a heat treatment temperature of 160oC and a holding time of 60 minutes is 18.310 MPa. However, it is still below the strength of the non-heat treated specimen, 19.890 MPa. Specimens with low tensile strength have a microstructure that shows an uneven distribution of titanium particles. Last, fractography shows porosity in the specimens with the lowest tensile strength.
Co-Authors ,, Sumarji Agil Widhy Azizi Agus Triono Ahmad Adib Rosyadi Ahmad Iqbal Fawaid Ahmad Rendi Maulana Ahmad Syuhri Al Wafi, Adib Ales, Steve Korakan Alfi Hasan Anam, Khairul Andi Sanata Angger Sudrajat Angger Sudrajat, Angger Antonius Cahya Prihandoko Aris Zainul Muttaqin Ariyo Anindito Asrofi, M Azmi Saleh Bambang Irawan Basuki , Hari Arbiantara Boy Arief Fachri Cahya Alief Prasetyo Cahya Alief Prasetyo Catur Suko Sarwono Chatarina Umbul Wahyuni Chen, Zhan Clarissa Putri Sholeha Danang Yudistiro Danang Yudistiro, Danang Yudistiro Danny Febriansyah Dedi Dwilaksana Deny Tomy Andrianto Digdo Listyadi, Digdo Dinata, Gerry Gardika Surya Doddy Parningotan Dwi Djumhariyanto Dwi Hidayatul Qoryah, Rika Efendi , Moh Riski Elhamzah, Denaldy Elza Setya Faqih, Muhammad Fadhlurrohman Faradin Adyatama Faris Ahmad Junaedi Fatkhur Rohman Firman Gustiawan Gaguk Jatisukamto Hadi Samsul Halmi Palwa Guna Hanifudin, Muhamad Hardiatama , Intan Hari Arbiantara Hari Arbiantara Basuki Hari Arbiantara, Hari Hary Sutjahjono Hayun Indra Nur Iman Hermawan , Yuni Hutama, Tri Surya Ilminafik, Nasrul Imam Rudi Sugara Imam Sholahuddin Indra Surya Iwanata Intan Hardiatama Ismono, Firman Ema Jatisukamto , Gaguk Joni Anggianto Khamdan Khavivi Kusno Kusno Kustanto, Muh. Nurkoyim Kustanto, Nurkoyim Laily Ilman Widuri Luviandy, Allen Miftakhul Rohman Mochamad Asrofi Mochamad Edoward Ramadhan Mochamad Edoward Ramadhan Mochamad Edoward Ramadhan Mochammad Edoward Ramadhan Mohammad Firman Mohammad Firman, Mohammad Muh Nurkoyim Kustanto Muhammad Dimyati Nashrullah Muhammad Ghilman Badri Muhammad Ghilman Badri, Muhammad Ghilman Muhammad Mukti Ali Muhammad Nur Cahyo Hidayat Nasrullah Muhammad Sholihul Amin Muhammad Trfiananto Muhammad Trifiananto Nasrul Ilminnafik Naufal Fardio Albajili Nugraha, Dicky Aprilian Nurkoyim Kustanto, Muh Pasang, Timotius Pieter Muhammad Iko Marrendra Prakoso, Muhammad Ihsan Prayogo Alim Pangestu Puranggo Ganjar Widityo R. Koekoeh Koenjtoro Wibowo Rahma Rei Sakura Raihaan . Ramadhan, Ivan Fadilla Renald Rochman Mauludy Rika Dwi Hidayatul Qoryah Rizal, Ahmad Ayyub Syaiful Robertoes Koekoeh Koentjoro Wibowo Robertus Sidartawan Rossy, Rio Martha Febriana Rudi Sugara, Imam Sains Ilham Akbar Salahuddin Junus Salman Al Farisi Siregar Salmansyah, Dathantara Samsuri . Santoso Mulyadi Sari, Herninda Ayu Meylinda Soesatijono Soesatijono Soesatijono Soesatijono Sukma, Kinanti Wilujeng Sumarji Sumarji Susanti, Rizqa Putri Syahriza, Mochamad Rifki Syuhri, Skriptyan Noor Hidayatullah Taqdissillah, Doohan Timotius Pasang TRI HANDOYO Tri Surya Hutama Triana Lindriati W.C.S, I Made Ivan Wardatul Jannah Wazirotus Sakinah Wibowo, Robertoes Koekoeh K. Wibowo, Robertoes Koekoeh Koentjoro Yahya, Hafiz Indratma Yohan Rizal Kharisma Yulio, Agit Yoga Yuni Hermawan Yusron Maulana, Raden Muhammad Zhan Chen