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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Rekayasa Mesin Sinergi R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Conference on Innovation and Application of Science and Technology (CIASTECH) JOURNAL OF SCIENCE AND APPLIED ENGINEERING JAST : Jurnal Aplikasi Sains dan Teknologi Jurnal Masyarakat Merdeka (JMM) Jurnal Teknik Mesin Indonesia Jurnal Aplikasi Dan Inovasi Ipteks SOLIDITAS Jurnal Energi dan Teknologi Manufaktur Scientific Journal of Mechanical Engineering Kinematika JURNAL FLYWHEEL Jurnal Mesin Nusantara Journal mechanical and manufacture technology (JMMT) ARMATUR : Artikel Teknik Mesin dan Manufaktur Aceh International Journal of Science and Technology Prosidia Widya Saintek Jurnal Polimesin PROTON : Jurnal Ilmu-Ilmu Teknik Mesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Purbo Suwandono
Program Studi S1 Teknik Mesin, Fakultas Teknik, Universitas Widyagama Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Effect of magnetite nanoparticles on the viscoelastic properties of magnetorheological elastomers Priyandoko, Gigih; Suwandono, Purbo
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7109

Abstract

Advanced materials known as Magnetorheological Elastomers (MREs) can be used to dampen vibrations. These materials reduce vibration disturbances by responding to an externally applied magnetic field, which alternate their mechanical characteristics. The objective of this research is to explore the effect of incorporating magnetic nanomaterials (Fe₃O₄) on the properties of MRE. The modified material is expected to exhibit enhanced sensitivity to magnetic fields, thereby improving its vibration-damping performance. The MRE mixture utilized in this investigation consists of Carbonyl Iron Powder (CIP), silicone oil, and silicone rubber, with mass percentages of 30%, 5%, and 65%, respectively. The MRE was then given magnetite nanomaterials in amounts of 0.5%, 1%, 1.5%, and 2% of the total weight. To produce MRE, thoroughly mix the silicone rubber with silicone oil and then gradually add the carbonyl iron powder, ensuring uniform dispersion. Once the homogeneity was achieved, the magnetite nanomaterial were incorporated into the MRE mixture with precision. The resulting composite were then cured, optionally under a magnetic field to induce anisotropic alignment. Laboratory tests were conducted on the new material. These tests involved analyzing their elemental composition and evaluating their viscoelastic properties. The research findings indicate the successful development of MREs containing Fe₃O₄ nanomaterials for the purpose of vibration dampening within the frequency range of 1–100 Hz. At a center frequency of 1,167 Hz, MRE-2 (MRE with a 0.5% addition of Fe₃O₄) demonstrated the strongest damping performance, exhibiting the highest tan δ value. This makes MRE-2 the primary choice. MRE-1 is an excellent alternative due to its high stiffness and effective damping at low frequencies.
An Examination of the Fe₃O₄ nanomaterial impact in conjunction with Magnetorheological Elastomer material Priyandoko, Gigih; Ubaidillah, Ubaidillah; Imaduddin, Fitrian; Suwandono, Purbo; Sasongko, Muhammad Ilman Nur
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.006

Abstract

Magnetorheological elastomer (MRE) is an advanced material class that can be used for vibration damping. This material possesses the ability to reduce vibration disturbances through adjustment of its mechanical properties in response to a magnetic field applied from an external source. The objective of this study is to ascertain the effect of incorporating Magnetite (Fe₃O₄) nanomaterials into MRE. It is expected that this new material will be more sensitive to magnetic fields in damping vibrations, which would be a significant improvement. MRE is composed of carbonyl iron powder (CIP), silicone oil, and silicone rubber, with weight proportions of 30%, 5%, and 65%, correspondingly. The addition of magnetite nanomaterials to MRE occurred at weight ratios of 0.5%, 1%, 1.5%, and 2%. Observations of this new material included elemental composition analysis and viscoelastic testing of various mixture formulations in the laboratory. From this research, it can be concluded that an MRE containing Fe₃O₄ nanomaterials has been created. For the attenuation of vibrations within the 1–100 Hz frequency range. MRE-2 (MRE with 0.5% Fe₃O₄ added) is the best choice as the primary material, as it exhibited the highest tan delta value and strong damping performance at an intermediate frequency. MRE-1 sample was used as a base material mixture without added Magnetite also an excellent choice, offering high stiffness and good damping capability at low frequencies. It is shown by the results of this experiment that the effectiveness of MRE in reducing vibration can be increased by adding Magnetite, even in the limited mid-frequency range of 0 to 100 Hz.
Analisa Kegagalan Suspensi Cylinder pada Unit CAT 777D dan Dampak terhadap Downtime Operasional di PT Sims Jaya Kaltim Sunjana, Dhanie Freida Aji; Hermawan, Dadang; Suwandono, Purbo; Fadhillah, Arief Rizki
JURNAL FLYWHEEL Vol 17 No 1 (2026): Jurnal Flywheel
Publisher : Teknik Mesin S1 ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/flywheel.v17i1.15660

Abstract

Penelitian ini bertujuan untuk menganalisis penyebab kegagalan suspensi silinder pada unit dump truck CAT 777D serta dampaknya terhadap downtime operasional di PT SIMS Jaya Kaltim. Sistem suspensi hidropneumatik pada unit ini memegang peranan penting dalam meredam getaran dan menjaga stabilitas kendaraan di medan tambang yang ekstrem. Namun, tingginya frekuensi kegagalan, terutama akibat keausan seal, overpressure sistem, dan kontaminasi oli, menjadi penyebab signifikan downtime alat berat. Studi dilakukan dengan pendekatan kuantitatif dan kualitatif melalui observasi lapangan, wawancara teknisi, analisis data maintenance, dan pengambilan sampel oli. Hasilnya menunjukkan bahwa 30 kejadian kegagalan suspensi selama satu tahun menyebabkan downtime sebesar 257 jam, dengan hubungan korelasi yang sangat kuat (r = 0,984) antara frekuensi kerusakan dan durasi downtime. Dari analisis Pareto, tiga penyebab utama menyumbang lebih dari 80% total kerusakan, yaitu seal aus (45%), overpressure (30%), dan kontaminasi oli (25%). Temuan ini menunjukkan bahwa strategi pemeliharaan preventif yang saat ini digunakan belum efektif dalam mencegah kegagalan internal. Oleh karena itu, penelitian ini merekomendasikan penerapan Predictive Maintenance (PdM) berbasis sensor dan analisis data kondisi nyata untuk menurunkan downtime, memperpanjang usia pakai komponen, dan meningkatkan efisiensi operasional.
Pengaruh Penambahan Katalis Zeolit terhadap Kinerja Gasifikasi Sekam Padi dan Karakteristik Syngas Kusmuryadi, Agung; Suwandono, Purbo
JURNAL FLYWHEEL Vol 17 No 1 (2026): Jurnal Flywheel
Publisher : Teknik Mesin S1 ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/flywheel.v17i1.17763

Abstract

Penelitian ini bertujuan mengevaluasi pengaruh penambahan katalis zeolit terhadap kinerja proses gasifikasi sekam padi dan karakteristik gas hasil (CO, H₂, dan CH₄). Metode penelitian menggunakan eksperimen pada reaktor gasifikasi skala laboratorium dengan suplai udara dari blower pada kondisi operasi yang dijaga konstan. Bahan bakar yang digunakan adalah sekam padi sebanyak 500 g untuk setiap pengujian, dengan variasi massa zeolit 0 g, 100 g, 200 g, dan 300 g yang dicampurkan langsung ke bahan bakar. Parameter yang diamati meliputi profil temperatur reaktor dan perubahan konsentrasi CO, H₂, dan CH₄ terhadap waktu menggunakan sensor gas. Hasil menunjukkan bahwa penambahan zeolit memengaruhi dinamika pembentukan gas, ditandai oleh perubahan nilai puncak, kestabilan plateau, dan durasi produksi gas. Secara umum, zeolit pada level menengah menunjukkan kinerja paling baik dalam meningkatkan dan mempertahankan gas mudah terbakar selama operasi, sementara zeolit pada level tinggi cenderung memperpanjang durasi produksi namun menunjukkan fluktuasi pada fase akhir. Temuan ini mengindikasikan adanya kondisi optimum penambahan zeolit untuk meningkatkan kualitas syngas dari sekam padi serta mendukung pemanfaatan limbah pertanian sebagai sumber energi alternatif.
PENGARUH PERBANDINGAN KINERJA SOLAR STILL MENGGUNAKAN COVER PIRAMIDA DAN PENAMBAHAN RUANG KONDENSASI Dias Mardianto; Nova Risdiyanto Ismail Ismail; Akhmad Farid; Purbo Suwandono
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.276

Abstract

One-third of Indonesia's territory is ocean, but Indonesia still experiences difficulties in clean water, especially in coastal areas. Solar still technology can be used to overcome these problems. There have been many studies conducted to improve the performance of solar stills, one of which is to change the shape of the cover or cover. The purpose of this study was to compare the effect of pyramid cover with the addition of condensation chamber (WES). This research uses experimental and theoretical methods. This study used fin absorbent plates using mortar material. The result of this study is the highest solar still performance using the WES cover compared to using the pyramid cover experimentally and theoretically. The highest productivity using WES cover is 2,087 kg / day for experiments and for theoretical values of 2,287 kg / day, while the efficiency obtained is 31.66% for experiments and 32,19% for theoretical. The difference in freshwater productivity and solar still efficiency between experimental and theoretical was not significant.
Analisa parameter pada pemotongan plate menggunakan CNC fiber laser cutting terhadap kekasaran permukaan Muhammad Arief Hidayat; Akhmad Farid; Purbo Suwandono
TURBO [Tulisan Riset Berbasis Online] Vol 10 No 2 (2021): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1737

Abstract

With the advancement of advanced equipment, Computer Numerical Control (CNC) laser cutting as a manufacturing tool in plate cutting, where industri player make to get maximum result. Laser cutting Cutting is one of the tools used by the industrial world to maximize cutting results. The purpose of this research To find out the results of the difference using the parameters of air pressure and cutting speed on a Q235B carbon steel plate with a thickness of 3 mm using CNC fiber laser cutting on the surface roughness of the material. The method used in this study is a real experimental research method and data analysis to analyze parameters on plate cutting using laser cutting on surface roughness with this number of experiments 9 and 3 replications for the research process by testing surface roughness using Surface Roughness Sj – 210 Mitutoyo. The results showed that the higher the air pressure and the lower the cutting speed, the lower the surface roughness value and vice versa. The lowest surface roughness value is at air pressure of 16 Bar with a cutting speed of 3300/min which is getting a value of 1.499 μm and the highest surface roughness value is at air pressure of 12 bar with a cutting speed of 3400 mm/min which is getting a value of 2.986 μm. dengan kecepatan pemotongan 3400 mm/min yaitu mendapatkan nilai sebesar 2,986 μm.
Pengaruh konduktivitas thermal pada hot cylinder mesin stirling menggunakan energi surya terkonsentrasi Akhmad Rizal Fanani; Muhammad Agus Sahbana; Purbo Suwandono
TURBO [Tulisan Riset Berbasis Online] Vol 10 No 2 (2021): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1741

Abstract

Renewable energy is one of the businesses sector that will develop rapidly after the changing economic order due to the corona outbreak. The characteristics of Indonesia's tropical climate by getting good sunlight throughout the year can be used as alternative and renewable energy. The Stirling engine is one type of external combustion engine, because combustion is carried out outside the engine using a closed regenerative cycle in which the working fluid is compressed or expanded in a separate reservoir and then distributed to drive the power piston reciprocatingly. The method developed is the use of solar energy which is concentrated by a parabolic reflector to the hot cylinder of the Stirling engine to convert heat energy into motion energy. The purpose of this study was to determine the effect of the thermal conductivity of several material specimens used in the hot cylinder of the Stirling engine including copper, stainless steel, & glass. This study uses an experimental method to describe the performance of a stirling engine prototype using various types of hot cylinder material specimens. The results showed that the gamma stirling engine using hot cylinder glass material had the best performance because with a heat conductivity of 0.78 W/mËšC it was able to drive a stirling engine with a speed of 132 rpm and a torque of 0.57 N.mm at the temperature difference between hot cylinder and cold cylinder of 88ËšC and with a thermal efficiency of 20.39%.
PENGARUH JUMLAH SUDU TERHADAP UNJUK KERJA 3D PRINT TURBIN AIR TIPE VORTEX Alvin Dio Nugroho; Purbo Suwandono; Dadang Hermawan; Arief Rizki Fadhillah
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1935

Abstract

The potential of natural resources in the form of water energy is a renewable natural resource that is often used because it does not damage the environment and can be used continuously. This water flow has two types, namely laminar flow and turbulent flow, the forces generated from these two flows are also different. Turbulent flow tends to produce a greater force and can lift object masses better than laminar flow. Therefore, a vortex turbine has emerged which utilizes turbulent flow as a waterwheel drive, by directing laminar flow towards the cross section and converting it into turbulent flow by utilizing the force of gravity and The cross-sectional shape forms a whirlpool that can move a waterwheel and turn a turbine. The number of blades is very influential on the performance generated from the vortex turbine and affects the resulting output, be it voltage, current, rotational speed, torque and efficiency. In this study, the best results were shown on blades with a total of 6, at a rotational speed of 141.3 rpm; at the voltage shows the result of 0.28 volts; at current it produces 44 mA; at Torque (Nm) 0.22 Nm; and the efficiency is 76.5%.
Pemanfaatan dinding sebagai permukaan kondensasi untuk meningkatkan kinerja solar still double slope Nova Risdiyanto Ismail; Purbo Suwandono; Dadang Hermawan; Frida Dwi Anggraeni
TURBO [Tulisan Riset Berbasis Online] Vol 12 No 1 (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.v12i1.2439

Abstract

Indonesia is an archipelagic country that often experiences drought, especially in the dry season. In the dry season, there is very abundant solar and seawater energy, so to overcome the problem, you can use solar still technology that utilizes solar energy to process seawater into condensate / fresh water economically. Various efforts are made to optimize the performance of solar stills, in this case the study aims to utilize the wall as a condensation surface to improve the performance of solar still double slope. The study was conducted experimentally by comparing: 1. Solar still double slope without utilizing the wall as a condensing surface, 2. Solar still double slope by utilizing the north side wall as a condensing surface, 3. Solar still double slope by utilizing the south side wall as a condensation surface, and 4. Solar still double slope by utilizing the north and south side walls as condensing surfaces. The results of the study using solar still double slope by utilizing the north wall as a condensing surface obtained the highest productivity of 1966 ml and the highest efficiency of 68.58%.
Co-Authors AA Sudharmawan, AA Adin Nurrohman Aditya Wahyu Winadi Atmajaya Agung Suprapto, Agung Agus Nofiyanto Ahmad Rusli Wahyu Setiawan Akhmad Farid Akhmad Farid Akhmad Farid Akhmad Rizal Fanani Al Barr, Muhammad Haafizh Alvin Dio Nugroho Andy Hardianto Andy Hardianto Anggunio, Cornelius Arie Restu Wardhani Arief Rizki Fadhillah Dadang Hermawan Dadang Hermawan Dias Mardianto Dicky Dikananda Nafis Dicky Dikananda Nafis Diky Siswanto Dlofir, Aan Taufik Dwi Anggraeni, Frida Fachrudin Fachrudin Fachrudin Hunaini Fanani, Akhmad Rizal Ferdinando, Rio Fressy Nugroho Frida Dwi Anggraeni Frida Dwi Anggraeni Gatot Soebiyakto Gatot Soebiyakto Gatot Soebiyakto Gatot Subiyakto Gatot Subiyakto Gatot Subiyakto Gatot Subiyakto Gatot Subiyakto Hakim, Muhammad Izzuddin Abdul Hangga Wicaksono Heni Pujiastuti Hunaini, Fachrudin Hutri Wicaksono, Leo Imaduddin, Fitrian Imam Hambali Ismail*, Nova Risdiyanto Kusmuryadi, Agung Leo Hutri Wicaksono M. Agus Sahbana M. Ghazali Arrahim Moch. Zainul Achyak Mochammad Nurcholis Majid Muhammad Agus Sahbana Muhammad Agus Sahbana Muhammad Arief Hidayat Muhammad Ilman Nur Sasongko Nafisah, Viona Ngudi Tjahjono Nova R. Ismail Nova Risdiyanto Ismail Nova Risdiyanto Ismail Ismail Novayako, Riza Dandy Nurida Finahari Nurkholis Hamidi Prakoso, Yogi Iman Prasetyo, Rino Ayogi Adi Prihandarini, Ririen Priyandoko Gigih Putra, Gusty Nanda Kharisma R. Ismail, Nova Rama Agus Santoso Ramadhani, Auzhar Rafli Ririen Prihandarini Rizki Hidayat Sigit Tri Wicaksono Silviana Silviana Silviana Silviana Sitanggang, Rickie Natanael Solichi, Azis Sumartono Ali Putra Sunjana, Dhanie Freida Aji Suriansyah, Suriansyah Ubaidillah Ubaidillah Ubaidillah Wahai, Rizky Wahyudi, M. Ilham Setyo Wicaksono, Leo Hutri Widya Wijayanti Wijaya, Rendra Adi