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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 Locus Penelitian dan Pengabdian Jurnal Litbang Industri Dedikasi: Jurnal Pengabdian Kepada Masyarakat National Multidisciplinary Sciences Jurnal Polimesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Mahros Darsin
Jurusan Teknik Mesin Fakultas Teknik Universitas Jember
Religion Aerospace Engineering 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 Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Chemical Modification of Petung Bamboo Fiber to Hybrid Composites: Modifikasi Kimia Serat Bambu Petung terhadap Komposit Hibrida Yusron Maulana, Raden Muhammad; Rahma Rei Sakura; Nasrul Ilminnafik; Sumarji; Mahros Darsin
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v10i2.1768

Abstract

This study evaluates the effect of alkali treatment using NaOH solution on the mechanical properties and microstructure of hybrid composites based on epoxy resin reinforced with petung bamboo fiber and fiberglass. Bamboo fibers were immersed in five NaOH concentration variations (0%, 3%, 6%, 9%, 12%) before composite fabrication using the hand lay-up method. Tensile testing was performed according to ASTM D-638 standard and microstructural characterization using Scanning Electron Microscope (SEM). The results showed that 9% alkali treatment produced the best mechanical performance with a tensile strength of 58.68 MPa, elongation of 4.15%, and elastic modulus of 1413.49 MPa. SEM analysis indicated improved fiber-matrix adhesion due to removal of lignin and hemicellulose. Optimal alkali concentration enhanced composite performance, making it a potential candidate for eco-friendly vehicle interior applications.
Pengaruh Variasi Temperatur Hidrolisis dan Waktu Fermentasi Terhadap Kadar Bioetanol Menggunakan Bahan Baku Limbah Kulit Singkong Cahyadi, Tedi Setiawan; Ilminnafik, Nasrul; Darsin, Mahros; Sanata, Andi; Hermawan, Yuni
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 12 (2025): JURNAL LOCUS: Penelitian dan Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i12.4693

Abstract

Pertumbuhan penduduk meningkatkan kebutuhan akan bahan bakar. Hal ini berbanding terbalik dengan penurunan ketersediaan bahan bakar fosil. Oleh karena itu, pemerintah Indonesia bertujuan untuk meningkatkan bauran sumber energi terbarukan. Salah satu kemungkinannya adalah memanfaatkan limbah kulit singkong untuk diolah menjadi bioetanol. Salah satu langkah terpenting terfokus pada proses hidrolisis dan fermentasi. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh suhu hidrolisis dan waktu fermentasi terhadap hasil kadar etanol dengan melakukan pengulangan sebanyak 3 kali. Penelitian ini menggunakan variasi suhu hidrolisis dan waktu fermentasi dengan variasi suhu 90°C, 95°C, 100°C dan waktu fermentasi selama 3 hari, 5 hari dan 7 hari dengan melakukan pengulangan sebanyak 3 kali. Dari hasil penelitian hidrolisis dengan kadar gula reduksi tertinggi diperoleh pada sampel suhu 100°C mendapatkan nilai rata-rata kadar brix sebesar 31°Brix. Sedangkan kadar etanol tertinggi diperoleh pada suhu 100°C dengan waktu 7 hari pengulangan ke 3 memperoleh nilai sebesar 58% kadar etanol. Kesimpulan penelitian ini adalah peningkatan suhu hidrolisis dapat menaikan kadar gula reduksi karena mempercepat laju reaksi hidrolisis. Selain itu juga dapat membantu penguraian lignoselulosa karena lebih mudah terpapar enzim dan pengaruh dari waktu fermentasi semakin lama waktu fermentasi yang digunakan semakin tinggi pula kadar etanolnya karena ragi memiliki waktu lebih banyak untuk mengubah gula (glukosa, fruktosa) hasil hidrolisis kulit singkong menjadi etanol dan CO?.
Mesin Pengaduk Pupuk Organik Cair (POC) untuk Pemberdayaan Masyarakat di Desa Jatimulyo, Jenggawah, Jember: A Liquid Organic Fertilizer (LOF) Mixing Machine for Community Empowerment in Jatimulyo Village, Jenggawah, Jember Nikmah, Nailu Kotrin; Aprillia, Dita; Aldiro, Firdhi Januar; Azhari, Nadila Laila; Rizaldy, Nicholas; Nurhasanah, Nurhasanah; Yulianasari, Resha Dhiah Eka; Wulandari, Rista Dea; Rossy, Rio Martha Febriana; Putra, Tri Wirayuda; Darsin, Mahros
Bestari: Jurnal Pengabdian Kepada Masyarakat Vol 6 No 1 (2026): Januari 2026
Publisher : Sekolah Tinggi Keguruan dan Ilmu Pendidikan (STKIP) Melawi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46368/dpkm.v6i1.4878

Abstract

Abstrak Limbah organik jika tidak dikelola dengan baik akan menimbulkan berbagai masalah, baik bagi kesehatan, maupun lingkungan. Pengelolaannya menjadi pupuk cair dapat membantu petani memanfaatkan ulang limbah dapur dan pertanian mereka menjadi lebih berdaya guna bagi usaha tani mereka. Petani di Desa Jatimulyo, Jenggawah, Jember, Jawa Timur telah mengenal dan memanfatkan pupuk organik cair (POC) dengan proses pembuatan secara manual. Karena manual, proses pembuatannya memerlukan waktu sekitar enam pekan. Proses pembutaan POC dapat dipercepat dengan pengadukan masinal, terutama pada periode fermentasi yakni dengan pengadukan berkala dan teratur. Tim pengabdian terdiri atas gabungan mahasiswa Teknik Mesin dan Teknik Industri Pertanian melihat peluang ini dan membuat mesin pengaduk untuk POC. Pengenalan teknologi ini ke  masyarakat membuat kelompok tani sangat bergembira, karena dapat memercepat proses pembuatan POC menjadi tiga pekan. Para petani mengharapkan keberlanjutan program mahasiswa mengabdi di desa dengan berbagia inovasi dan teknologi yang lain untuk kemajuan mereka. Kata kunci: limbah organik, pupuk organic cair, mesin pengaduk, pengabdian masyarakat Abstract If not managed properly, organic waste can cause various problems, both for health and the environment. Processing it into liquid fertilizer can help farmers reuse their kitchen and agricultural waste, making it more effective for their farming businesses. Farmers in Jatimulyo Village, Jenggawah, Jember, East Java, have become familiar with and utilize liquid organic fertilizer (POC) through a manual manufacturing process. Due to the manual process, the manufacturing time is approximately six weeks. The POC manufacturing process can be accelerated by mechanical stirring, especially during the fermentation period, which requires periodic and regular stirring. A community service team consisting of Mechanical Engineering and Agricultural Industrial Engineering students saw this opportunity and created a mixing machine for POC. The introduction of this technology to the community greatly delighted the farmer group, as it can accelerate the POC manufacturing process to three weeks. The farmers hope for the continuation of the student service program in the village, along with various other innovations and technologies to further their progress. Keywords: organic waste; liquid organic fertilizer; stirrer machine; community service
A Study of Chip Formation on Turning with Minimum Quantity Lubrication Method (MQL) Qoryah, Rika Dwi Hidayatul; Azizi, Agil Widhy; Darsin, Mahros
EMITTER International Journal of Engineering Technology Vol 8 No 1 (2020)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24003/emitter.v8i1.469

Abstract

The cutting fluid is one of the essential factors in machining to increase machinability. The issuance of ISO 14000 about reducing the use of cutting fluid for its danger for operator and environment has encouraged many researchers to find ways to minimize its use. The Minimum Quantity Lubrication (MQL) is an answer to it. To further reduce the use of cutting fluid, a device that complies with MQL criteria for controlling the spray based on the tool temperature has successfully designed. This paper is discussing the effect of applying this device to the chips formation. The experiments were on turning of AISI 4340 using carbide tools. The Taguchi method L9 used to design the experiments. The variations made on the method of applying the cutting fluid, depth of cut, and cutting fluid composition. The chips formation was calculated based on the value of the degree of serration. Analysis of the S/N ratio, followed by ANOVA, revealed that the cutting fluids application method is the least factor affecting the chips formation. In contrast, the depth of cut influences the chips formation by 75 per cent more. The highest degree of serration achieved when applying the combination of depth of cut of 1.8 mm, the composition of 5:5, and flood method of applying cutting fluid.
ENGINEERING INNOVATION FOR RURAL WASTE MANAGEMENT: DEVELOPMENT OF AN ORGANIC WASTE CHOPPER MACHINE IN JEMBER REGENCY Mahros Darsin; Hari Arbiantara Basuki; Danang Yudistito; Robertoes Koekoeh Koentjoro Wibowo; Fikril Hilmi; Dwi Djumhariyanto; Muhammad Maulana Andi Surya; Hafidz Ahmad Abdillah; Muhamad Zaky Rizqullah Nurrosidi; Deni Yudas Priawan
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 10 No. 1 (2026): MARET
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v10i1.3240

Abstract

Waste management remains a critical challenge in rural and semi-urban communities in Indonesia, where limited infrastructure and low public awareness often lead to environmental degradation. Jelbuk Village in Jember Regency produces approximately 1,200 kg of household waste per day, most of which is disposed of in rivers or vacant land. This condition has resulted in pollution, health risks, and flooding, while the economic potential of waste recycling remains untapped. To address these issues, the Universitas Jember community service team implemented an integrated waste management program that combines technical innovation with community empowerment. The technical approach involved designing and fabricating a portable organic waste chopper machine with a capacity of 120 kg/hour, enabling the production of compost from organic waste. In parallel, inorganic waste such as plastics and metals was separated for recycling. The non-technical approach included training, awareness campaigns, and mentoring in simple bookkeeping to strengthen community capacity for sustainable waste management. The program successfully reduced waste accumulation, improved sanitation, and created new economic opportunities through compost production and the sale of recyclable materials. Furthermore, the involvement of students in design and implementation enhanced academic outcomes and knowledge transfer. This initiative demonstrates that integrated technical and social approaches can effectively transform waste problems into community-based solutions with long-term sustainability.
Co-Authors ,, Sumarji Agus Triono Ahmad Adib Rosyadi Ahmad Iqbal Fawaid Ahmad Rendi Maulana Ahmad Syuhri Al Wafi, Adib Aldiro, Firdhi Januar Ales, Steve Korakan Alfi Hasan Anam, Khairul Andi Sanata Angger Sudrajat Angger Sudrajat, Angger Antonius Cahya Prihandoko Aprillia, Dita Aris Zainul Muttaqin Ariyo Anindito Asrofi, M Azhari, Nadila Laila Azizi, Agil Widhy Azmi Saleh Bambang Irawan Basuki , Hari Arbiantara Boy Arief Fachri Cahya Alief Prasetyo Cahya Alief Prasetyo Cahyadi, Tedi Setiawan Catur Suko Sarwono Chatarina Umbul Wahyuni Chen, Zhan Clarissa Putri Sholeha Danang Yudistiro Danang Yudistiro, Danang Yudistiro Danang Yudistito Danny Febriansyah Dedi Dwilaksana Deni Yudas Priawan Deny Tomy Andrianto Digdo Listyadi, Digdo Dinata, Gerry Gardika Surya Doddy Parningotan Dwi Djumhariyanto Dwi Djumhariyanto Dwi Hidayatul Qoryah, Rika Efendi , Moh Riski Elhamzah, Denaldy Elza Setya Faqih, Muhammad Fadhlurrohman Faradin Adyatama Faris Ahmad Junaedi Fatkhur Rohman Fikril Hilmi Firman Gustiawan Gaguk Jatisukamto Hadi Samsul Hafidz Ahmad Abdillah 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 Muhamad Zaky Rizqullah Nurrosidi Muhammad Dimyati Nashrullah Muhammad Ghilman Badri Muhammad Ghilman Badri, Muhammad Ghilman Muhammad Maulana Andi Surya Muhammad Mukti Ali Muhammad Nur Cahyo Hidayat Nasrullah Muhammad Sholihul Amin Muhammad Trfiananto Muhammad Trifiananto Nasrul Ilminnafik Naufal Fardio Albajili Nikmah, Nailu Kotrin Nugraha, Dicky Aprilian Nurhasanah Nurhasanah Nurkoyim Kustanto, Muh Pasang, Timotius Pieter Muhammad Iko Marrendra Prakoso, Muhammad Ihsan Prayogo Alim Pangestu Puranggo Ganjar Widityo Putra, Tri Wirayuda R. Koekoeh Koenjtoro Wibowo Rahma Rei Sakura Raihaan . Ramadhan, Ivan Fadilla Renald Rochman Mauludy Rika Dwi Hidayatul Qoryah Rizal, Ahmad Ayyub Syaiful Rizaldy, Nicholas 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 Wulandari, Rista Dea Yahya, Hafiz Indratma Yohan Rizal Kharisma Yulianasari, Resha Dhiah Eka Yulio, Agit Yoga Yuni Hermawan Yusron Maulana, Raden Muhammad Zhan Chen