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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal Teknik Mesin Jurnal Rekayasa Mesin Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin JURNAL MUQODDIMAH : Jurnal Ilmu Sosial, Politik dan Hummaniora Jurnal Pertahanan : Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nasionalism dan Integrity SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Mesin NUSANTARA : Jurnal Ilmu Pengetahuan Sosial JURNAL PENDIDIKAN TAMBUSAI Jurnal Abdi Insani Jurnal Surya Teknika Mitra Akademia: Jurnal Pengabdian Masyarakat Jurnal Penelitian Inovatif Jurnal Pijar MIPA International Journal of Humanities Education and Social Sciences Journal of Mechanical Engineering, Science, and Innovation Formosa Journal of Multidisciplinary Research (FJMR) Jurnal Sains dan Teknologi Formosa Journal of Science and Technology (FJST) Formosa Journal of Applied Sciences (FJAS) Jurnal Ilmu Hukum, Humaniora dan Politik (JIHHP) Jurnal Bakti Nusa Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Karya Pengabdian Teknik Mesin Jurnal Pendidikan Indonesia (Japendi) Innovative: Journal Of Social Science Research Indonesian Journal of Interdisciplinary Research in Science and Technology (MARCOPOLO) Jurnal Sosial, Politik dan Budaya (SOSPOLBUD) AutoMech : Jurnal Teknik Mesin Jurnal Keamanan Nasional Journal of Law & Policy Review Jurnal Hukum Mimbar Justitia Energy, Materials and Product Design
Rudy Sutanto
Teknik Mesin, Universitas Mataram
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PENERAPAN PENDEKATAN SHIP DALAM ANALISIS ERGONOMI MAKRO PADA KAJIAN PENGEMBANGAN ALAT PENGERING PASCAPANEN BAGI PETANI KECIL  I Gede Bawa Susana; Rudy Sutanto
Energy, Materials and Product Design Vol. 5 No. 1 (2026): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v5n1.338-345

Abstract

Postharvest drying equipment plays an important role in maintaining the quality of agricultural products produced by smallholder farmers. However, many currently used drying devices have not fully considered ergonomic aspects, particularly at the work system level. This study aims to analyse the design of postharvest drying equipment for smallholder farmers using a macro ergonomic approach grounded in the SHIP principles (systemic, holistic, interdisciplinary, and participatory). This approach is employed to examine the interrelationships among humans, tools, work processes, the environment, and the organizational and social aspects surrounding the system. The research method used in this study is a descriptive qualitative approach, employing a literature review and conceptual analysis of postharvest drying equipment design practices at the smallholder farming scale. The analysis results indicate that the SHIP approach enables the comprehensive identification of ergonomic issues, ranging from mismatches between equipment design and farmers’ working postures and habits to limitations in production systems, as well as the lack of user involvement in the design process. The integration of systemic, holistic, interdisciplinary, and participatory principles provides a macro-ergonomic framework that is relevant and applicable to supporting the design of postharvest drying equipment that is more contextual, sustainable, and aligned with the needs of smallholder farmers. In macro ergonomics, the SHIP approach serves as a methodological framework for comprehensively analysing and designing work systems by positioning humans at the centre of the system. This study is expected to serve as a conceptual reference for the development of agricultural equipment design based on macro-ergonomic principles.
Effect of Cylinder Rotation Speed on Corn Drying Characteristics in a Rotary Dryer Muhammad Al Fatih Habibi; Rudy Sutanto; Made Wirawan
Journal of Mechanical Engineering, Science, and Innovation Vol 6, No 1 (2026): (April)
Publisher : Institut Teknologi Adhi Tama Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2026.v6i1.8620

Abstract

Corn has a high post-harvest moisture content (20-40%), making drying very important to maintain quality and extend shelf life. This study investigated the effect of drum rotation speed in a rotary dryer on the drying characteristics of corn and compared it with solar drying. The drying method was carried out using an LPG-fueled rotary dryer with an inlet air temperature of 70°C and an air flow velocity of 7.9 m/s. The drum rotation speed was varied at 6 rpm, 9 rpm, and 12 rpm with an initial corn mass of 5 kg. Drying was carried out for 6 hours. And data collection was carried out every 30 minutes during the drying process. As a result, a higher drum rotation speed significantly increased the drying rate. A speed of 12 rpm showed the best performance with a maximum drying rate of 0.46 kg/hour and an average of 0.24 kg/hour. However, the highest energy efficiency was obtained at a speed of 6 rpm, indicating that lower speeds require less energy despite longer drying times. Overall, the rotary dryer performed better than solar drying in reducing corn moisture content more quickly, stably, and controlled in a shorter time
Analisis Efektivitas Arang Sekam Padi sebagai Adsorben dalam Pemurnian Biogas dari Kotoran Sapi Sutanto, Rudy; Susana, I Gede Bawa
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11312

Abstract

Biogas is a renewable energy source produced through the anaerobic fermentation process of organic waste, especially cow dung, but its utilization is still limited due to the high content of impurity gases such as carbon dioxide (CO₂) and hydrogen sulfide (H₂S). This study aims to evaluate the performance of rice husk charcoal as an adsorbent material in the process of improving biogas quality and to analyze the effect of variations in adsorbent mass and contact time on increasing methane (CH₄) content. The research method is carried out through three main stages, namely biogas production using an anaerobic digester, adsorbent synthesis through carbonization and chemical activation processes, and purification testing using an adsorption column system. The variations in adsorbent mass used are 100 g, 200 g, and 300 g, with contact times of 5, 10, and 15 minutes, respectively. The results show that the increase in adsorbent mass and contact time is directly proportional to the efficiency of CO₂ absorption. The CH₄ content increased from 58.2% to 78.6%, while CO₂ decreased from 34.5% to 18.2% under optimum conditions. The CO₂ absorption efficiency reached a maximum value of 47.25%. This performance occurred at an adsorbent mass of 300 g and a contact time of 15 minutes, indicating that rice husk charcoal has porous characteristics that can effectively enhance the adsorption process.
Pemodelan Koefisien Perpindahan Panas Pada Sistem Pengeringan Berbasis Energi Sekam Padi Dengan Pendekatan Analogi Perpindahan Panas Dan Massa I Gede Bawa Susana; Rudy Sutanto
AutoMech : Jurnal Teknik Mesin Vol. 6 No. 01 (2026): Mei
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jtm.v6i01.13718

Abstract

Penelitian ini bertujuan untuk memodelkan koefisien perpindahan panas pada sistem pengeringan berbasis energi sekam padi menggunakan pendekatan analogi perpindahan panas dan massa (Chilton–Colburn). Analisis dilakukan pada kondisi temperatur udara masuk pengering sebesar 92,10°C dan temperatur lingkungan rata-rata 31°C, dengan pendekatan sifat termofisik udara pada temperatur rata-rata 60°C. Parameter yang digunakan meliputi densitas, kapasitas panas spesifik, viskositas kinematik, difusivitas massa, serta bilangan tak berdimensi seperti Reynolds, Prandtl, dan Schmidt. Hasil menunjukkan bahwa bilangan Reynolds sebesar 444 mengindikasikan bahwa aliran berada pada kondisi transisi menuju turbulen ringan yang mendukung konveksi paksa. Berdasarkan analogi perpindahan panas dan massa, diperoleh bilangan Sherwood sebesar 40,6, koefisien perpindahan massa sebesar 0,248 m/s, serta koefisien perpindahan panas sebesar 249 W/m²·K dengan laju perpindahan panas mencapai 15,2 kW. Pendekatan analogi Chilton–Colburn menunjukkan bahwa koefisien perpindahan panas berbanding lurus dengan bilangan Reynolds pangkat 0,6 serta dipengaruhi oleh sifat fluida dan karakteristik partikel. Hasil ini menegaskan bahwa perpindahan panas dan massa terjadi secara simultan dan saling berkaitan erat dalam proses pengeringan. Model yang dikembangkan mampu merepresentasikan kondisi nyata sistem dan berada dalam rentang nilai literatur, sehingga dapat digunakan sebagai metode sederhana dan efektif dalam memprediksi performa sistem pengering berbasis biomassa.
Penerapan teknologi tepat guna pada kelompok tani Desa Setanggor, Kabupaten Lombok Tengah Suteja Suteja; Nasmi Herlina Sari; Sujita Sujita; Rudy Sutanto; Ida Bagus Alit; Syarif Hidayatullah; Ahmad Akromul Huda
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 3 (2026): June (In Progress)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i3.39015

Abstract

AbstrakKelompok tani sinar harapan memiliki permasalahan perawatan padi berupa biaya dan waktu semprot padi yang terus meningkat. Melalui program Pengabdian Kepada Masyarakat (PKM) ini dihasilkan dan diberikan alat semprot kepada kelompok tani sinar harapan di desa Setanggor sebagai upaya untuk meningkatkan dan mempermudah dalam penyemprotan padi oleh para petani. Oleh karena itu, hal ini menjadi isu yang perlu diselesaikan dalam peningkatan hasil pertanian. Mesin alat semprot ini didesain dan dibuat untuk mengatasi permasalahan seperti mempermudah dan mempercepat semprot padi. Selain pembuatan dan serah terima alat semprot, pelatihan pengoperasian, dan perawatan mesin dilakukan secara Bersama-sama dengn masyarakat dan tim pengabdian dalam program ini. Hasil pengabdian menunjukkan bahwa waktu semprot dan proses semprot pada padi lebih cepat, sehingga mengurangi biaya untuk upah yang dikeluarkan petani. Terlebih lagi, para petani di kelompok tani sinar harapan sudah melewati usaha produktif. Sehingga program ini sangat membantu para petani. Diharapkan program keberlanjutan pada alat yang berbeda lainnya untuk mendukung kemandirian para petani. Kata kunci: alat semprot; kelompok tani sinar harapan; pengabdian kepada masyarakat. Abstract The Sinar Harapan Farmers’ Group faces challenges in rice cultivation, specifically the rising costs and time required for rice spraying. Through this Community Service Program (PKM), a sprayer was developed and provided to the Sinar Harapan Farmers’ Group in Setanggor Village as an effort to improve and streamline rice spraying for farmers. Therefore, this issue must be addressed to increase agricultural yields. This sprayer was designed and built to address issues such as simplifying and speeding up rice spraying. In addition to the construction and handover of the sprayer, training on operation and machine maintenance was conducted jointly with the community and the service team as part of this program. The results of the community service initiative show that the spraying time and process for rice are faster, thereby reducing labor costs for farmers. Furthermore, farmers in the Sinar Harapan farming group have already achieved productive outcomes. Thus, this program is highly beneficial to farmers. It is hoped that sustainable programs involving other types of equipment will be implemented to support farmers’ self-reliance. Keywords: community service; sinar harapan farmers' group; sprayer.
Pengaruh Variasi Suhu pada Rotary Dryer terhadap Karakteristik Pengeringan Biji Kopi Rudy Sutanto; I Gede Bawa Susana
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.7934

Abstract

The use of a rotary dryer in the coffee bean drying process offers advantages in heating homogeneity and increased contact between the material and the drying medium. This study aims to analyze the effect of variations in the rotary dryer operating temperature on the drying characteristics of coffee beans in terms of changes in mass, moisture content, and drying rate. Experimental testing was conducted using four temperature levels, namely 40 °C, 50 °C, 60 °C, and 70 °C. The drying process lasted for 360 minutes with data collection intervals every 30 minutes to monitor the dynamics of moisture content reduction as a function of time. The results showed that increasing the rotary dryer operating temperature significantly accelerated the process of reducing the mass and moisture content of coffee beans. At a temperature of 70 °C, the rate of moisture reduction occurred the fastest compared to other temperature variations, while at a temperature of 40 °C the process was slower and tended to be stable. The drying rate showed a maximum value in the initial stage of drying, then decreased gradually as the moisture content in the material decreased. This phenomenon indicates a transition in the mass transfer mechanism from the dominance of free water evaporation to a slower internal moisture diffusion. Overall, temperature variations in rotary dryers significantly impact the drying dynamics of coffee beans. Determining the correct operating temperature is crucial for achieving optimal process efficiency while minimizing potential changes in material quality during drying.
Co-Authors Achmad Mirza Apriansyah Achmad Zainuri Achmad Zainuri Achmad Zainuri Adriyanto, Agus agus dwi catur Agus Dwi Catur Ahmad Akromul Huda Ahmad G. Dohamid Alam, Saiful Albubaroq, Hikmat Zakky Amir Kasman Anak Agung Alit Triadi Arief Prayitno Arif Mulyanto Arif Mulyanto, Arif Arman, Andi Arum, Dyah sekar Bambang Marwoto Bastian, Muhammad Arkhan Maulana BUDI PRAMONO Cempaka T, Fauzia G D.K. Putra Daniel Pasaribu, Nico Darmo, Sujita Demo Putra Didin F Fane, Didin F Didin S. Fane, Didin S. Dina Inda Rosyida, Esa Djoko Suseno Dyah Aryati Nugraha Ningsih Emmy dyah S Fauzia Gustarina Cempaka Timur Gilang Rezeki, Gilang Hadinata, Tri Halkis, Mhd. Halkis, Muhammad. Hanifudin, Achmad Fauzan Harahap, Sahnan Sulaiman Harisman Jaya, Harisman Hendry Sakke Tira Hendry Sakke Tira, Hendry Sakke I Gede Bawa Susana I Kade Wiratama I Made Mara I Wayan Joniarta I.G.B. Dipa Maha Putra, I.G.B. Dipa Maha Ida Bagus Alit Irfan Fahmi Nooryadi Irfan Fahmi, Irfan Ivan Yulivan James Julian Kurnia, Dedi Kusuma Wardani Kusuma Wardani KUSUMA WARDANI Kusuma, Hendri Puja Lalu Sultan Giri Tanjung Latief, Mohammad Nurdin Al M. Helmi M. Mirmanto, M. Made - Wirawan Made Mara, Made Made Wijana made wirawan Made Wirawan Made Wirawan Made Wirawan, Made Maharsa Pradityatama Mahendra, Esa Ramdhan Ardi Mahroza, Jonni Mas'ud Mas'ud Mhd. Halkis Mirmanto Mirza Apriansyah, Achmad Mitro Prihartoro Muhamad Hilmi, Muhamad Muhamad Noor Gibran Muhammad Al Fatih Habibi Musayyab, Said N. Nurchayati N. Nurchayati, N. Nasmi Herlina Sari Nopiyani, Nopiyani Nur Kaliwantoro Nurchayati Nurchayati Nurchayati Nurchayati Padmiatmi, Pandri Pandri Pandiatmi Pandri Pandiatmi Paryanto Dwi Setyawan Prakoso, Lukman Yudho Prasetyo, Soya Ani Pratama Kamarulah, Rizki Pria Budi Prihantoro, Kasih Prihartoro, Mitro Priyanto Priyanto Pujo Widodo, Pujo Purwantoro, Susilo Adi Raden Ruli Basuni Rahmadi, Fakhmi Caesar Reksoprodjo, Agus Hasan S Risa Rizania Rizania, Risa Ronika, Yulia Febi Zita Rostika, Rostika Rusli, Fauzi Sapriduan, Sapriduan Sigit Purwanto Sigit Purwanto Sinarep Sinarep Sinarep Sinarep Soya Ani Prasetyo Sri Patmi, Sri Sugiarta, Yannisa Rakhmani Sugiman . Suhirwan, Suhirwan Sujita Darmo Sujita Darmo Sujita Sujita Sujita Sujita Sujita, Sujita Sultan Sultan Sultan Sultan Suparman Ahmadi Suparman Ahmadi, Suparman Susmoro, Harjo Suteja Suteja Syahrul Syahrul Syahrul Syamiajaya, Arh Nur Afiad Syarif Hidayatullah Timur, Fauzia Gustarina Cempaka Tira, Hendry Tri - Rachmanto Tri Rachmanto Tulodo, Habibi Tri Uksan, Arifuddin Ulayo, Muhammad Ramdhan Ulhaq M, Faiq Dhiya Warka, I Wayan Wirawan Made Yannisa Rakhmani Sugiarta Yesung Allo Padang Yesung Allo Padang, Yesung Allo Yudha, Eka Mahatva Yudhyadi I.G.N Yulia Febi Zita Ronika Zaini, Ansori Zaiunuri, Ahmad