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All Journal JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Teknovasi : Jurnal Teknik dan Inovasi Mesin Otomotif, Komputer, Industri dan Elektronika Martabe : Jurnal Pengabdian Kepada Masyarakat Infotekmesin Journal of Applied Engineering and Technological Science (JAETS) Community Development Journal: Jurnal Pengabdian Masyarakat Teknomekanik Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan Mejuajua Automotive Experiences IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) IRA Jurnal Pengabdian Kepada Masyarakat
Yopan Rahmad Aldori
Universitas Medan Area
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering 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 Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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Pemberdayaan generasi muda dalam transisi energi hijau melalui pelatihan teknologi fuel cell Iswandi, Iswandi; Supriatno, Supriatno; Susilawati, Susilawati; Hermanto, Tino; Hasibuan, Samsul Abdul Rahman Sidik; Muliono, Rizki; Royani, Ida; Aldori, Yopan Rahmad
Jurnal Anugerah Vol 7 No 1 (2025): Jurnal Anugerah: Jurnal Pengabdian kepada Masyarakat Bidang Keguruan dan Ilmu Pen
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/anugerah.v7i1.7174

Abstract

Krisis energi global dan rendahnya literasi energi bersih di kalangan pelajar mendorong perlunya edukasi teknologi alternatif yang berkelanjutan. Kegiatan pengabdian ini dilatarbelakangi oleh kebutuhan untuk meningkatkan wawasan siswa terhadap teknologi energi terbarukan, khususnya fuel cell. Tujuan kegiatan ini adalah untuk memperkenalkan prinsip dasar kerja teknologi fuel cell serta membangun pemahaman dan keterampilan awal siswa Sekolah Menengah Kejuruan (SMK) sebagai bagian dari edukasi transisi energi hijau. Pengumpulan data dilakukan sebagai langkah evaluatif untuk meninjau keberhasilan kegiatan PkM. Tolok ukur keberhasilan ditentukan berdasarkan peningkatan pemahaman kognitif siswa serta tingkat partisipasi dan respons positif terhadap materi pelatihan. Metode pelaksanaan menggunakan pendekatan pelatihan interaktif, pendidikan masyarakat, dan substitusi ipteks. Peserta kegiatan berjumlah lebih dari 50 siswa jurusan Bisnis dan Manajemen di SMK Swasta Nurul Amaliyah Tanjung Morawa. Teknik pengumpulan data mencakup pre-test dan post-test untuk mengukur peningkatan pemahaman, observasi untuk menilai keterlibatan siswa, serta wawancara semi-terstruktur untuk menggali persepsi dan ketertarikan siswa terhadap teknologi energi bersih. Analisis data dilakukan secara deskriptif kuantitatif dan naratif. Hasil menunjukkan adanya peningkatan skor pemahaman peserta dari 42% menjadi 81%, disertai partisipasi aktif dan ketertarikan tinggi terhadap materi. Peserta juga mampu mengaitkan prinsip kerja fuel cell dengan peluang usaha berbasis energi bersih. Kegiatan ini membuktikan bahwa edukasi ipteks lintas disiplin dapat menjembatani kesenjangan pemahaman teknologi dan membentuk kesadaran technopreneurship. Oleh karena itu, model pelatihan ini berpotensi diterapkan secara lebih luas dalam satuan pendidikan vokasi non-teknik untuk mendukung transisi energi nasional.
Inovasi Teknologi Hijau Untuk Masa Depan Dan Peran Keteknikan Dalam Industri Berkelanjutan Di SMA Negeri 1 Tebing Tinggi Rahman Aldori, Yopan; Moerni, Saufa Yardha; Syafitri Rambe, Yunita; Susilawati, Susilawati; Ermita Wulandari, Tika; Muhathir, Muhathir; Maghfirah, Maghfirah
Mejuajua: Jurnal Pengabdian pada Masyarakat Vol. 5 No. 1 (2025): Agustus 2025
Publisher : Yayasan Penelitian dan Inovasi Sumatera (YPIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52622/mejuajuajabdimas.v5i1.267

Abstract

Permasalahan lingkungan global yang semakin kompleks mendorong perlunya inovasi teknologi hijau sebagai solusi menuju masa depan yang berkelanjutan. Pendidikan memainkan peran strategis dalam membentuk kesadaran generasi muda terhadap pentingnya menjaga lingkungan dan mengembangkan teknologi ramah lingkungan. Kegiatan pengabdian kepada masyarakat ini dilaksanakan di SMA Negeri 1 Tebing Tinggi dengan tujuan utama untuk meningkatkan pemahaman siswa mengenai konsep teknologi hijau serta memperkenalkan peran keteknikan dalam mendukung industri berkelanjutan. Metode pelaksanaan kegiatan dilakukan secara edukatif dan partisipatif melalui penyampaian materi interaktif, diskusi kelompok, serta sesi tanya jawab yang mendorong keterlibatan aktif peserta. Materi yang disampaikan meliputi pengenalan teknologi hijau, studi kasus penerapannya di berbagai sektor industri, dan peran teknik dalam mendukung transformasi industri yang lebih ramah lingkungan. Hasil kegiatan menunjukkan antusiasme tinggi dari para siswa, yang ditunjukkan melalui keterlibatan aktif selama diskusi dan refleksi positif terkait peningkatan pengetahuan mereka tentang teknologi hijau. Selain memberikan dampak pada siswa, kegiatan ini juga memotivasi pihak sekolah untuk mulai mempertimbangkan integrasi tema lingkungan ke dalam kegiatan belajar mengajar, baik itu dalam bentuk tugas ataupun praktik langsung penggunaan teknologi hijau. Untuk rencana jangka panjang, kegiatan ini dapat menjadi inisiator kerjasama antara tim pengabdian dengan pihak sekolah dalam pelaksanaan praktik penggunaan teknologi hijau di sekolah.
Analisis Pengujian Elastisitas Young Modulus Pada Wood Poylmer Composite Dengan Metode Hot Press Sembiring, Bagus Suranta; Aldori, Yopan Rahmad; Handoko, Ari
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.226

Abstract

This study aims to determine the Elasticity of Wood Polymer Composite (WPC). The composite was made using 15 grams of wood powder and 30 grams of plastic sheets, processed for 60 minutes at a pressure of 8 MPa. The temperature used was 125°C. The hot press method is one of the techniques commonly used to produce WPC. In this process, a mixture of wood fibre and plastic sheets is heated and pressurised below the temperature to compact and form the composite according to the desired mould. By creating a dogbone-shaped specimen with a distinctive shape, featuring a narrowed centre, the design is intended to ensure that failure occurs at the centre of the specimen when tested, thereby providing more accurate results about the material's strength.
Analisa Kekerasan Dengan Pengujian Vickers Pada Wood Polymer Composite Menggunakan Metode Hot Press Pranata, Hadi; Aldori, Yopan Rahmad; Handoko, Ari
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.279

Abstract

Wood Polymer Composite (WPC) is a composite material composed of wood powder and recycled plastic. This material has been widely developed as an environmentally friendly alternative since it combines the natural properties of wood with the advantages of polymers. The manufacturing process involves mixing wood powder and plastic, followed by heating and molding into various structural forms. WPC exhibits high strength, durability, and resistance to environmental conditions, making it a popular alternative to solid wood. A typical composition consists of 50% wood powder and 50% high-density polyethylene (HDPE). In addition to improving wood utilization efficiency, WPC also contributes to reducing plastic waste accumulation that is difficult to decompose in the environment.
Analisis Peleburan Aluminium 3004 Berdasarkan Jumlah Boraks dengan Metode Regresi Linear Faddillah, Fahmi; Aldori, Yopan Rahmad; Suprapto, Suprapto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.282

Abstract

This study aims to analyze the effect of borax as a flux on the melting performance of recycled 3004 aluminum from beverage can waste. The melting process was carried out using an oil-fueled furnace with six borax variations, ranging from 2.5 g to 15 g for 500 g of recycled aluminum. The results showed that the net aluminum mass increased from 209 g to 293 g, while the slag mass decreased from 242 g to 139 g. Linear regression analysis revealed a positive correlation between borax and net mass (R² = 0.9116) and a negative correlation between borax and slag (R² = 0.9135). Therefore, borax proved effective in increasing the yield of clean metal and reducing slag during the recycling of aluminum.
Studi Performa Mesin Pencacah Polimer Komposit Berbasis Uji Laboratorium Sianturi, Danial Jack Marbis; Tumangger, Theo Fredrik; Aldori, Yopan Rahmad; Iswandi, Iswandi; Umroh, Bobby
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.290

Abstract

Polymers are the result of monomer polymerization with a lower density than metals but a much smaller elastic modulus, making them less rigid and strongly affected by temperature. This study evaluates the performance of a laboratory-scale crushing machine for polypropylene blended with activated carbon at varying compositions. The machine employed carbon steel rotary blades driven by a 1 HP electric motor through a gearbox transmission. Results showed average crushing times of 3.5–4 minutes/kg. Pure polypropylene produced a 72% fine fraction, while adding 10% activated carbon reduced it to 65%. Crushing efficiency remained above 85%, demonstrating stable performance and feasibility for composite material applications.
OPTIMALISASI PENGOLAHAN LIMBAH PLASTIK PADA KELOMPOK TANI JATI REJO-1 DI DESA PARTIMBALAN, BANDAR MASILAM, KABUPATEN SIMALUNGUN Jubaidah, Jubaidah; Suprapto, Suprapto; Iskandar, Henry; Puspita, Riana; Aldori, Yopan R.; Syahra, Assyfa; Aryanta Sembiring, Robi; Diansyah, Diansyah; Meidiansyah, Fadli
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 7, No 9 (2024): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v7i9.3544-3551

Abstract

Kegiatan Pengabdian Masyarakat (PKM) ini bertujuan untuk mengoptimalkan pengolahan limbah plastik di Kelompok Tani Jati Rejo-1, Desa Partimbalan, Bandar Masilam, Kabupaten Simalungun. Metode yang digunakan meliputi sosialisasi, pelatihan, dan pendampingan teknis dalam pengolahan limbah plastik menjadi produk yang bernilai ekonomis. Hasil menunjukkan adanya peningkatan pengetahuan dan keterampilan anggota kelompok tani dalam mengolah limbah plastik. Hasil kegiatan ini berhasil meningkatkan kesadaran lingkungan dan perekonomian masyarakat setempat.
KAJIAN TEKNOLOGI PEMBUATAN GULA SEMUT AREN ORGANIK PADA KELOMPOK TANI JATI REJO 1 DESA PARTIMBALAN Suprapto, Suprapto; Iskandar, Henry; Daryanto, Eka; Listiyanto, Listiyanto; Riadi, Selamat; Jubaidah, Jubaidah; R. Nurfazriah, Latifah; R. Aldori, Yopan; Giovan Panjaitan, Asido; Firmansyah Nasution, Taufik
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 7, No 8 (2024): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v7i8.3004-3012

Abstract

Produk Gula semut aren organik (GSAO) merupakan komoditi yang sangat diminati dipasar nasional dan insternasional. Pengembangan teknologi pengering sangat diperlukan untuk mendapatkan kualitas GSAO yang dapat memenuhi standar pasar. Mesin pengering jenis rak yang dimiliki mitra kelompok tani jati rejo-1 (KTJR-1) belum memenuhi standar teknis pengering. Kegiatan Pengabdian kepada Masyarakat (PKM) bertujuan penerapan ilmu dan ahli teknologi dalam pengembangan teknologi pengeringan rotary drying machine (RDM) untuk meningkatkan kuantitas dan kualitas produk GSAO. Metode pelaksanaan PKM mencakup survei, observasi, pelatihan dan pendampingan, serta analisis mesin pengering jenis rak yang ada di mitra. Hasil rancangan mesin dan perpindahan panas dapat dijadikan dasar oleh mitra dalam fabrikasi sebuah mesin pengering dengan menerapkan prinsip perpindahan panas yang effisien untuk meningkatkan kualitas dan efisiensi produksi GSAO.
Uniaxial and biaxial hot pressing of PVDF films: A pathway toward high-performance piezoelectric sensors and energy harvesters Suprapto, Suprapto; jubaidah, Jubaidah; Triono, Selamat; Gunawan, Harianto; Lisyanto, Lisyanto; Nugraha, Aditya Sukma; Aldori, Yopan rahmad
Teknomekanik Vol. 9 No. 1 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v9i1.44972

Abstract

The piezoelectric efficiency of Poly (vinylidene fluoride) (PVDF) membranes becomes restricted by the challenge of generating and stabilizing electroactive β-phase during processing. Stretching requires control of deformation parameter, while solvent-based methods bring environmental and occupational health risks. This research suggests hot-pressing as an alternative method for enhancing β-phase fraction, utilizing multidirectional stress without solvent or chemical exposure. This study systematically compares uniaxial hot-pressing (Uniaxial HP) and biaxial hot-pressing (Biaxial HP) setups to determine which stress distribution is more effective at promoting changes and improving piezoelectric properties in PVDF membranes. The main objective of this research is to systematically evaluate and compare the impacts of uniaxial and biaxial hot-pressing on the crystalline phase transformation and electromechanical performance, including the piezoelectric coefficient (d33) and output voltage response of PVDF membranes. PVDF pellets were hot-pressed at 220o C under a pressure of 60 MPa for 15 minutes followed by rapid quenching in ice water. X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) confirmed phase composition, correlated with performance via the piezoelectric coefficient (d33), and assessed piezoelectric activity. Experimental results show that biaxial loading provides a higher b-phase fraction (50.47%) compared to untreated membranes (47.80%) and UHP samples (49.30%). The crystallinity and the piezoelectric coefficient also increased to 49% and 18.8 pC/N, respectively. Biaxial stress pattern during hot-pressing induces favourable thermodynamic and kinetic conditions for b-phase expansion. Beyond phase-related results, the approach delivers competitive piezoelectric effectiveness while maintaining simplicity and reducing solvent-dependent processing steps.
Activated Carbon as a Functional and Sustainable Filler in Composite Bipolar Plates For Fuel Cell Applications Iswandi; Suherman; Tino Hermanto; Yopan Rahmad Aldori; Muhammad Idris; Abu Bakar Sulong
Automotive Experiences Vol. 9 No. 1 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.16009

Abstract

Bipolar plate is a key component that determines a fuel cell's performance and service life. Carbon-based polymer composite materials were developed as lightweight, easy-to-process alternatives to metal. The use of carbon-based fillers in polymer composites has grown rapidly as an alternative to bipolar plate materials in fuel cell applications, especially to meet performance targets set by the U.S. Department of Energy (DOE). DOE requires high electrical conductivity (≥100 S/cm in the in-plane direction and ≥10 S/cm in the through-plane direction), low density, adequate mechanical strength, and good corrosion resistance and chemical stability. Recent studies have shown that the addition of carbon fillers, such as graphite, carbon black, graphene, and activated carbon (AC), can increase electrical conductivity by forming conductive percolation networks in polymer matrices. This study evaluates the potential of AC from household waste in the form of coconut shells as fillers in polypropylene (PP) composites for bipolar plate applications. AC is synthesized through carbonization and activation processes, then mixed into a PP matrix with PP/AC compositions of 100/0, 90/10, 80/20, and 70/30 percent by weight. The focus of the study is the effect of composition variation on density and bending strength. The test results show that increasing the AC fraction tends to decrease the composite density. The maximum density was obtained at a 90/10 (by weight) PP/AC composition of 0.9 g/cm³, indicating more effective filling of the pore matrix by AC particles. On the other hand, bending strength shows a downward trend. The maximum flexural strength is achieved at an AC composition of 34.58 MPa at 10% weight, indicating optimal dispersion and stress transfer between the matrix and the filler. The addition of AC above the composition causes a decrease in bending strength due to potential particle agglomeration, cavities, and the limited mobility of polymer chains. Electrical conductivity tends to increase with the addition of AC due to the formation of a network of electrical currents between carbon particles within cavities, reaching a maximum of 5 S/cm at 30% by weight of AC. The electrical conductivity obtained showed better improvement than several research results on polymeric materials using the hot-press method, with a value of 1.7 S/cm, using graphite filler materials up to 60% by weight. These findings confirm that AC from coconut shells has the potential to serve as a sustainable filler for fuel cell bipolar plates, with an optimal composition that balances density and mechanical properties.
Co-Authors Abd Rahman Bin Dullah Abu Bakar Sulong Ade Irma Sagala Aditya Sukma Nugraha Adly Zulqarnain bin Mohamad Andhika Ariyudha Andri Herlambang Ari Handoko Arya Rudi Nasution Aryanta Sembiring, Robi Bobby Umroh Dadan Ramdan Darianto Darianto Darianto, Darianto Darwin, Felix Derlini Diansyah, Diansyah Didik Sugiono Din Aswan Amran Ritonga Dina Maizana Eka Daryanto, Eka Erni Yusnita Etanto Heiliano Wijayanto Evan Roland Girsang Faddillah, Fahmi Fadhli Farsa Fider Lumbanbatu Firmansyah Nasution, Taufik Giovan Panjaitan, Asido Gunawan, Harianto Habib Satria Habib Satria Handoko, Ari Harianto Gunawan HENRY ISKANDAR Hermansyah Hermasnyah Husri Zarmawan Ida Royani INDRA HERMAWAN Indra Hermawan Indri Dayana Iswandi Iswandi Iswandi Iswandi Iswandi Jubaidah jubaidah Jubaidah Jubaidah Jubaidah, Jubaidah Jufrizal Jufrizal JUNAIDI Junaidi Junaidi Listiyanto, Listiyanto Lisyanto . Maghfirah Maghfirah Marwan Marwan Masrajuddin Masrajuddin Mega Puspita Sari Meidiansyah, Fadli Mhd. Iqbal Mhd. Taufik Ardaha Mislan Mislan Moranain Mungkin Muhammad Abdul Rasyid Muhammad Angga Prayoga Muhammad Dava Faruqi Muhammad Idris Muhammad Irwanto Muhammad Yusuf Rahmansyah Siahaan Muhathir, Muhathir Nidya Chitraningrum Nova Arief Setyanto Pangestu, Reno Prabowo, Yoga Pranata, Hadi Pratiwi Putri Lestari R. Nurfazriah, Latifah Rambe, Yunita Syafitri Recsi Febian Adiansyah Riana Puspita, Riana Rizki Muliono Ruztamreen Bin Jenal Samsul A Rahman Sidik Hasibuan Sandi Saputra Saufa Yardha Moerni Selamat Riadi Selamat Triono Selamat Triono, Selamat Sembiring, Bagus Suranta Sianturi, Danial Jack Marbis Sinaga, Willyam Warikson Siswo Pranoto Siti Utari Rahayu Suherman Sukma Aditya Sukmawati Supardi Supardi Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Supriatno, Supriatno Syahra, Assyfa Syofyan Anwar Syahputra Syurkarni Ali Taufik Wal Hidayat Tika Ermita Wulandari Tino Hermanto Tumangger, Theo Fredrik Uun Novalia Harahap