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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) TEKNIK 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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Investigasi Penambahan Internal dan Eksternal Reflektor untuk Meningkatkan Kinerja Solar Still Double Slope Nafisah, Viona; Ismail, Nova Risdiyanto; Fadhillah, Arief Rizki; Suwandono, Purbo
J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Vol. 9 No. 2 (2025): J-Proteksion
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jp.v9i2.2432

Abstract

Kebutuhan air tawar terus meningkat seiring dengan pertumbuhan populasi, terutama di daerah pesisir dan kepulauan yang sering mengalami kekurangan air saat musim kemarau. Salah satu solusi yang dapat digunakan adalah teknologi solar still, meskipun produktivitasnya masih rendah. Untuk meningkatkan kinerja solar still, perlu dilakukan pengembangan dengan menambah reflektor guna meningkatkan energi radiasi matahari yang masuk ke sistem. Investigasi ini bertujuan mengkaji penambahan reflektor internal dan eksternal untuk meningkatkan performa solar still double slope (SSDS). Metode yang digunakan adalah eksperimen dengan membandingkan kinerja SSDS, penambahan reflektor internal (SSDS.RI), dan penambahan reflektor internal dan eksternal (SSDS.RIE). Hasil penelitian menunjukkan bahwa SSDS.RIE menghasilkan produktivitas tertinggi sebesar 4.24 liter/m².hari dibandingkan dengan SSDS.RI dan SSDS. Efisiensi tertinggi juga diperoleh pada SSDS.RIE sebesar 55.83%, lebih tinggi dibandingkan SSDS.RI dan SSDS.
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.
The effect of biomass ratio and CaO/Si catalyst on hydrogen production from corncob–wood pellet gasification Suwandono, Purbo; Wijayanti, Widya; Ismail, Nova Risdiyanto; Akbar, Dzulfikar Johan; Pambudi, Wisnu Setyo Catur
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7803

Abstract

Biomass co-gasification combined with catalytic upgrading offers a promising pathway for enhancing hydrogen-rich syngas production. This study investigates co-gasification of corncob and wood pellets in an updraft fixed-bed reactor, integrated with ex-situ CaO/Si catalytic upgrading. Nine experimental runs were conducted by varying the corncob: pellet ratio (1:1–3:1), catalyst loading (6–10 wt% of 80 g biomass), and CaO/Si ratio (1:1–3:1), while reactor geometry, inlet air speed (10 m/s), and run duration (1500 s) were kept constant. The product gas was routed through an ex-situ catalyst bed, cooled in a condenser, and then analyzed using calibrated MQ sensors (H₂, CH₄, CO, CO₂). Gas composition was monitored using calibrated MQ sensors to provide comparative trends among operating conditions. The best performance was observed in Run 7 (50:50 biomass ratio, 10 wt% catalyst, CaO/Si = 2:1), achieving peak H₂ at 8000 ppm and CH₄ at 46,000 ppm, while CO₂ decreased to 16,000 ppm compared with several other runs. This outcome was consistent with CO₂ sorption by CaO, which can shift reactions toward higher H₂ formation (e.g., via the WGS equilibrium), and was supported by downstream upgrading reactions in the hot-gas line. The results suggest that combining biomass blending with ex-situ CaO/Si upgrading can improve the characteristics of hydrogen-enriched syngas within the investigated operating range.Biomass co-gasification combined with catalytic upgrading offers a promising pathway for enhancing hydrogen-rich syngas production. This study investigates co-gasification of corncob and wood pellets in an updraft fixed-bed reactor, integrated with ex-situ CaO/Si catalytic upgrading. Nine experimental runs were conducted by varying the corncob: pellet ratio (1:1–3:1), catalyst loading (6–10 wt% of 80 g biomass), and CaO/Si ratio (1:1–3:1), while reactor geometry, inlet air speed (10 m/s), and run duration (1500 s) were kept constant. The product gas was routed through an ex-situ catalyst bed, cooled in a condenser, and then analyzed using calibrated MQ sensors (H₂, CH₄, CO, CO₂). Gas composition was monitored using calibrated MQ sensors to provide comparative trends among operating conditions. The best performance was observed in Run 7 (50:50 biomass ratio, 10 wt% catalyst, CaO/Si = 2:1), achieving peak H₂ at 8000 ppm and CH₄ at 46,000 ppm, while CO₂ decreased to 16,000 ppm compared with several other runs. This outcome was consistent with CO₂ sorption by CaO, which can shift reactions toward higher H₂ formation (e.g., via the WGS equilibrium), and was supported by downstream upgrading reactions in the hot-gas line. The results suggest that combining biomass blending with ex-situ CaO/Si upgrading can improve the characteristics of hydrogen-enriched syngas within the investigated operating range.
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.
PELATIHAN PENGOLAHAN LIMBAH TONGKOL JAGUNG MENGGUNAKAN METODE GASIFIKASI KEPADA MAHASISWA Suwandono, Purbo; Ismail, Nova Ridiyanto; Fachrudin, Fachrudin; Reza, Muhammad; Hakim, Lukman
Prosidia Widya Saintek Vol. 5 No. 1 (2026)
Publisher : Universitas Widyagama Malang

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

Abstract

Kegiatan pengabdian ini bertujuan meningkatkan kepekaan lingkungan dan kompetensi mahasiswa Teknik Mesin dalam mengolah limbah tongkol jagung melalui metode gasifikasi. Pelatihan dilaksanakan di laboratorium kampus dengan pendekatan diskusi–praktik. Sesi awal membahas dampak pembakaran terbuka, prinsip waste-to-energy, tahapan gasifikasi, serta aspek keselamatan kerja. Selanjutnya peserta menyiapkan tongkol jagung (pemilahan, pengeringan, penyeragaman ukuran), melakukan start-up gasifier skala laboratorium, mengatur suplai udara, memantau temperatur, menguji nyala syngas pada burner, dan menjalankan prosedur shutdown serta penanganan residu char/abu. Evaluasi dilakukan menggunakan pre-test dan post-test, observasi keterampilan, dan umpan balik peserta. Hasil menunjukkan peningkatan pemahaman yang konsisten pada seluruh peserta (n=10), dengan kenaikan rata-rata sekitar 80% dari sebelum ke sesudah pelatihan. Mahasiswa juga menunjukkan peningkatan disiplin K3 dan kemampuan troubleshooting dasar. Program ini efektif sebagai model pembelajaran terapan dan dapat direplikasi untuk pengelolaan biomassa pertanian di lingkungan kampus maupun masyarakat. Luaran kegiatan berupa SOP singkat, dokumentasi praktik, dan rekomendasi peningkatan alat untuk pembelajaran berkelanjutan berikutnya.
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.
Co-Authors AA Sudharmawan, AA Adin Nurrohman Aditya Wahyu Winadi Atmajaya Agung Suprapto, Agung Agus Nofiyanto Ahmad Rusli Wahyu Setiawan Akbar, Dzulfikar Johan Akhmad Farid Akhmad Farid Akhmad Farid 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 Ismail, Nova Ridiyanto Kusmuryadi, Agung Leo Hutri Wicaksono Lukman Hakim M. Agus Sahbana M. Ghazali Arrahim Moch. Zainul Achyak Mochammad Nurcholis Majid Muhammad Agus Sahbana Muhammad Arief Hidayat Muhammad Ilman Nur Sasongko Muhammad Reza Nafisah, Viona Ngudi Tjahjono Nova R. Ismail Nova Risdiyanto Ismail Nova Risdiyanto Ismail Ismail Novayako, Riza Dandy Nurida Finahari Nurkholis Hamidi Pambudi, Wisnu Setyo Catur 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 Ubaidillah Wahai, Rizky Wahyudi, M. Ilham Setyo Wicaksono, Hangga Wicaksono, Leo Hutri Widya Wijayanti Wijaya, Rendra Adi