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All Journal JST ( Jurnal Sains Terapan ) JTT (Jurnal Teknologi Terpadu) Turbo : Jurnal Program Studi Teknik Mesin MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer INTEK: Jurnal Penelitian Sainstek : Jurnal Sains dan Teknologi BERDAYA: Jurnal Pendidikan dan Pengabdian Kepada Masyarakat Jurnal Pengabdian dan Edukasi Sekolah (Jubaedah) Jurnal Abdimas Bina Bangsa Asean Journal of Science and Engineering (AJSE) Jurnal Teknik Mesin Sinergi Jutek JAGO Jurnal Pengabdian Ahmad Yani Jurnal Pengabdian Kreativitas Pendidikan Mahakam (JPKPM) Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Taguchi : Jurnal Ilmiah Teknik dan Manajemen Industri International Journal of Multidisciplinary Approach Research and Science Journal of Multidisciplinary Research and Innovation (JMRI) AutoMech : Jurnal Teknik Mesin

Ahmad Yani

Sekolah Tinggi Teknologi Industri Bontang

Author-ID : 2581827

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy 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 Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Rancang Bangun dan Pengujian Instalasi Pompa Air Type Centrifugal Untuk Alat Praktikum Mesin Fluida STTI Bontang Yani, Ahmad; Istiqomah, Nurul; Armiyanto, Eko; Raharjo, Dwi; Hariyadi, Hanif
AutoMech : Jurnal Teknik Mesin Vol 2, No 02 (2022): Nopember
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jtm.v2i02.5798

Pompa sentrifugal adalah suatu alat atau mesin untuk memindahkan cairan dari satu tempat ke tempat lain dengan menggunakan gaya sentrifugal yang diakibatkan gerak impeller dan sekaligus mengubah tenaga kinetik fluida menjadi tenaga tekan pada cairan yang dipindahkan dan berlangsung secara terus menerus. Penelitian ini bertujuan untuk menghasilkan produk berupa prototype instalasi pompa sentrifugal yang dapat digunakan untuk alat praktikum mahasiswa STTI Bontang sehingga dapat meningkatkan pengetahuan dan kemampuan berpikir ilmiah mahasiswa dalam pembelajaran matakulaih mesin-mesin fluida. Metode yang digunakan pada penelitian ini yaitu metode eksperimental dengan merangcang alat, membuat alat dan melakukan pengujian langsung terhadap alat yang telah dibuat. Hasil rancang bangun instalasi pompa air type centrifugal bekerja secara normal. Hasil pengujian tersebut didapatkan nilai head dikoreksi (H) sebesar 10,4563 m. sedangkan nilai debit (Q) sebesar 5,320621 m3/jam, untuk nilai daya poros pompa (PS) sebesar 0,4527 hp, nilai daya hidrolis (PH) sebesar 0.2019 hp, dan nilai effisiensi pompa (ηp) sebesar 42,90%.

Studi Eksperimental Variasi Tekanan Keluar (Discharger) Terhadap Kinerja Pompa Air Sentrifugal: Pada Alat Praktikum Mesin Fluida STTI Bontang Yani, Ahmad; Istiqomah, Nurul; Junaini, Junaini; Hariyadi, Hanif; Raharjo, Dwi
AutoMech : Jurnal Teknik Mesin Vol 2, No 02 (2022): Nopember
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jtm.v2i02.5992

RANCANG BANGUN MESIN PENGIRIS SINGKONG DENGAN SISTEM KEAMANAN MENGGUNAKAN SENSOR INFRARED Tumaggor, Daniel; Yani, Ahmad; Siregar, Lisa A.
JMRI Journal of Multidisciplinary Research and Innovation Vol. 2 No. 3 (2024): December
Publisher : Lembaga Riset dan Pengembangan Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61240/jmri.v2i3.79

Pengolahan singkong menjadi produk olahan seperti keripik membutuhkan proses pengirisan yang cepat dan efisien. Pengirisan secara manual sering memakan waktu lama, memerlukan tenaga ekstra, serta berpotensi menimbulkan kecelakaan akibat penggunaan alat tajam. Mesin pengiris singkong konvensional biasanya tidak dilengkapi sistem keamanan yang memadai, sehingga berisiko menyebabkan kecelakaan, terutama ketika pengguna tidak berhati-hati. Oleh karena itu, penelitian ini bertujuan merancang dan membangun mesin pengiris singkong yang dilengkapi dengan sistem keamanan menggunakan sensor infrared. Sensor ini mendeteksi keberadaan tangan atau objek lain yang mendekati area pisau, sehingga mesin akan berhenti secara otomatis untuk menghindari kecelakaan. Hasil perancangan menunjukkan bahwa mesin ini tidak hanya mampu meningkatkan efisiensi produksi, tetapi juga memberikan perlindungan lebih kepada operator, menjadikannya lebih aman dan efisien dibandingkan mesin pengiris konvensional. Kesimpulannya, penggunaan teknologi sensor infrared dalam sistem keamanan mesin ini efektif dalam mengurangi risiko kecelakaan serta meningkatkan produktivitas.

Enhanced Hydrogen Production from Biomass Pyrolysis using Surfactant-Modified Na-Bentonite Catalyst Irawan, Dwi; Wijayanti, Widya; Wahyudi, Slamet; Kusumo, Herma Nugroho Rono Adi; Yani, Ahmad; Wardana, I.N.G.
ASEAN Journal of Science and Engineering Vol 5, No 3 (2025): AJSE: December 2025
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v5i3.88898

This study investigates the improvement of hydrogen gas production in biomass pyrolysis through the use of Na-bentonite catalysts modified with methyl ester sulfonate (MES), a biodegradable anionic surfactant. Corn cob powder was used as the biomass feedstock in a fixed-bed pyrolysis reactor at 550°C. The MES modification introduced alkyl, ester, and sulfonate functional groups, increasing the catalyst porosity, surface area, and acidity. Structural and chemical changes were confirmed by FTIR, XRD, UV-Vis, SEM, and EDX analyses. The MES-modified Na-bentonite catalyst significantly enhanced hydrogen production, reaching 876 ppm (a 25.11% increase compared to pyrolysis without a catalyst) and also lowered the reaction temperature and shortened the reaction time. Methane production decreased as MES improved catalyst selectivity toward dehydrogenation pathways. The results indicate that MES-modified Na-bentonite is a low-cost, efficient, and environmentally friendly catalyst suitable for improving hydrogen yields in biomass pyrolysis, offering a promising alternative to conventional metal-based catalysts.

Blade Shape Analysis on The Performance of The Pelton Turbine Prototype Yani, Ahmad; Irianto, Irianto; Triyatno, Joko; Fitria, Fitria; Sobah, Saripah
INTEK: Jurnal Penelitian Vol 7 No 1 (2020): In Press
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v7i1.2055

Water turbine is one of the driving machines where the working fluid is water that is used directly to spin the turbine runner. This research was conducted using a pelton type water turbine installastion with variations In the shape of the turbine blade. The research method used is an experimental method with a laboratory scale experimental design as well as the results of the design of this water turbine used as a practical tool for students majoring in mechanical engineering. The results showed the influence of turbine blade shape on the performance of the pelton water turbine prototype, so it can be concluded that the maximum tangential velocity is 12.141 rad/s, the hydraulic power value is 2.64 Watts, the kinetic power value is 3.886 Watts, maximum turbine power 99.141 Watts, maximum electric generator power 99.141 Watts, maximum turbine efficiency 25.512 %, and maximum electric generator efficiency 0.661 %.

Analisis Performance Central Prosessing Unit (CPU) Realtime Menggunakan Metode Benchmarking Yunanri W; Ammar Fauzan; Ahmad Yani; Muhammad Abdul Aziz
MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer Vol. 20 No. 2 (2021)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/matrik.v20i2.1142

Perkembangan teknologi semakin berkembang cepat baik dari performa, grafik, bandwidth dan lain-lainnya sehingga mempengaruhi berbagai sendi kehidupan dan profesi, hal ini menyebabkan perubahan sistem pada piranti atau kinerja pada central prosessing unit. Pada dunia bisnis, saat ini telah memfaatkan kemajuan teknologi informasi demi kelancaran kerja dibidang yang digeluti baik sekala kecil maupun sekala besar. Metode yang digunakan benchmarking merupakan suatu proses mengidetifikasi terhadap hardware dan proses suatu tolak ukur sebuah performa yang diharapkan. Adapun langkah pengujian melakukan evalusi kinerja central prosessing unit (CPU) yang dilakukan pada kinerja hardware atau perangkat keras baik prosessor, ram, vega dan lain sebagainya. Hasil pengujian yang dilaksanakan pada cental prosessing unit (CPU) penggunaan ram oleh prosessor i3 sebesar 3.1 Gb, GPU 3%, Disk uses 1%, penggunaan network atau jaringan 7.7 Mbps, penggunaan power suplay very low. Prosessor i5 sebesar 4.2 Gb, GPU 0%, Disk uses 0%, penggunaan network atau jaringan 7.7 Mbps, penggunaan power suplay low. Prosessor i7 sebesar 2.5 Gb, GPU 9%, Disk uses 9%, penggunaan network atau jaringan 104 Kbps, penggunaan power suplay high.

Study experimental alat destilasi air laut terhadap kuantitas dan kualitas air tawar yang dihasilkan dengan menggunakan energi matahari Ahmad Yani
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.v10i2.1744

One of the benefits of sunlight is to evaporate water (distillation). The working principle of this tool is that solar radiation penetrates the glass cover and hits the surface of the absorber, so that it turns into heat energy. The heat energy from the absorber is absorbed by the plate and seawater in the container in the distillation apparatus causes evaporation to occur. The water vapor produced will move up and stick to the bottom surface of the glass cover. The heat transferred to the environment causes water vapor that has reached the saturation temperature to condense. The dew that sticks to the inner surface of the glass cover will fall down by gravity following the slope of the glass cover on the outlet pipe. The purpose of this study was to determine the quantity and quality of fresh water produced by distillation equipment using solar energy. The research was conducted using an experimental method with an experimental design of a seawater distillation apparatus. The results showed that the quantity of distilled water produced from 07:00 to 16:00 for 8 days was 2578 ml. The quality of fresh water produced from the distillation apparatus includes turbidity, color, dissolved solids, temperature, taste, and odor that has met the requirements for use by the community in daily life based on the regulation of the Minister of Health of the Republic of Indonesia number 32 of 2017 concerning health quality standards. environmental and water health requirements for sanitary hygiene purposes.

Sintesis dan Karakterisasi Bunga Sepatu dan Karbon Kayu Ulin Untuk Katalis Pada Proses Pirolisis Sampah Plastik Guruh Sartika; Yano Hurung Anoi; Rosmiati; Asriwulan; Tatang Wiyadi; Amir Maulana; Ahmad Yani
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 2 (2026): TURBO: Jurnal Program Studi Teknik Mesin (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i2.5363

Plastic waste pyrolysis requires catalysts that are thermally stable, accessible, and economically viable. This study synthesizes and characterizes a biomass-based catalytic material derived from hibiscus flower powder and activated Ulin wood carbon. Hibiscus petals were dried under sunlight for 6 h, oven-dried at 55 °C for 1 h, ground, and sieved to 200 mesh. Ulin wood carbon was reduced by high-energy milling, sieved to 200 mesh, activated in 3 M NaOH using 8 g carbon for 12 h, washed to pH 6–7, and dried at 105 °C for 8 h. UV–Vis analysis showed that hibiscus powder contained 676.62 mg EQ/100 g flavonoids, 2305.06 mg GAE/100 g phenols, 369.69 ppm antioxidant activity, and 122.40 ppm anthocyanins. Activated Ulin carbon contained 166.28 mg EQ/100 g flavonoids, 32.04 mg GAE/100 g phenols, 0 ppm antioxidant activity, and 0.54 ppm anthocyanins. Thermal, morphological, functional group, and crystallinity analyses were conducted using TGA-DTA, SEM, FTIR, and XRD. The results indicate that hibiscus contributes oxygenated bioactive compounds, whereas activated Ulin carbon provides a carbonaceous support structure. The combined characteristics suggest potential use as a sustainable catalyst precursor for plastic waste pyrolysis. Keywords: Hibiscus flower; ulin wood carbon; activated carbon; biomass catalyst; plastic waste pyrolysis

Co-Authors Adam Tires, Brian Adelia Zepty Azzahra Amir Maulana Ammar Fauzan Andrian Ramadhani Ardyanto Darmanto Arief Muliawan Armiyanto, Eko Ashar Ashar Ashar Asriwulan Bayu Asmoro Seto Budi Susanto Dedy Daud Dimas Ifnu Pratama Dwi Irawan Dwi Raharjo Eko Armiyanto Faiqah Luthfiyah Fenriyati Faiqah Luthfiyyah Fenriyati Fitra Firdaus Fitria Fitria Guruh Sartika Hariyadi, Hanif Hendra Poeswanto Heni Pujiastuti I.N.G. Wardana Irianto Irianto Irianto Joko Triyatno, Joko Joni Kasmara Junaini, Junaini Kusumo, Herma Nugroho rono adi Marhatang Marhatang Masagus Moch. Yusuf Mihdar Mihdar Miswan Prastiawan Muhammad Abdul Aziz Muhammad Yusuf Mustafa, Dedi Nuhardin, Irhamni Nurul Istiqomah Ratnawati Rezki Nur Aoliah risaldi, risaldi Ristyohadi Ristyohadi Rosmiati Rosmiati Rosmiati Rudi Erianto Saat Ardani Saripah Sobah Septiani, Mimin Siregar, Lisa A. Slamet Wahyudi Suliono Suliono Syahrul Mubaraq Taqwa, Taqwa Tatang Wiyadi Toni Hendrawan. R Tumaggor, Daniel W, Yunanri Widya Wijayanti Wildan Hamdani Yano Hurung Anoi Yenindarti Yiyin Klistafani Yonatan Patabang

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