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All Journal Rekayasa Mesin Rekayasa Sipil Turbo : Jurnal Program Studi Teknik Mesin Indonesian Physical Review DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Specta Journal of Technology Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) PIKAT
Jatmoko Awali
Jurusan Teknik Mesin Fakultas Teknik Universitas Brawijaya
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CHARACTERIZATION AND ELECTROCHEMICAL BEHAVIOUR OF BORON DOPED DIAMOND IN DETECTING AMODIAQUINE Dewanto, Hizkia Alpha; Awali, Jatmoko; Hizam, Fadli; Destiny, Keysi Devain; Al Habib, Irsyad; Nabila, Najwa; Handayani, Murni; Triana, Yunita
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.345

Abstract

Amodiaquine (AQ) is an essential medicine in treating malaria. Yet, the threat of drug resistance and toxicity necessitates accurate measurement of AQ in the human body. This research determines the amodiaquine (AQ) detection performance of boron-doped diamond (BDD) working electrodes. The study utilizes different pulse velocity (DPV) methods to analyze the AQ reaction behavior of BDD. The research demonstrates the reaction mechanism: Two electrons are transferred, and irreversible oxidation reactions occur. The sensor limit of detection (LOD) is measured to determine the performance of working electrodes for AQ detection. The LOD is calculated between 0.0645 µM and 0.3 µM, and changes in analytical concentrations relative to maximum current are calculated. The LOD of the BDD electrode is 1.5×10–8 M, lower than previous research on AQ sensors, showing the effectivity of the BDD electrode as an AQ sensor.
ANALISIS PENGARUH VARIASI ARAH PENGELASAN HARDFACING TERHADAP KEKUATAN TARIK DAN STRUKTUR MIKRO PADA BAJA ASTM A36 Awali, Jatmoko; Maulana, M. Arzil; Rohimsyah, Fikan Mubarok; Triana, Yunita
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1507

Abstract

Welding is a metal joining process with filler or without filler. The welding method is also used to thicken the surface of the material or hardfacing. Hardfacing is a welding process with the aim of improving mechanical properties and is used on worn components by using SMAW welding, SMAW welding is used because it is relatively inexpensive and flexible. The purpose of this study was to determine the effect of hardfacing with SMAW welding direction variations on the tensile strength and microstructure of ASTM A36 steel material. The welding directions are horizontal, vertical and diagonal. This study used ASTM A 36 steel with a thickness of 5 mm. The welding electrode was E7018 with a diameter of 3.2 mm and a current of 130 A. After conducting this research, the highest average tensile strength value was found in the vertical direction, which was 474.74 N/mm2. The average value of the tensile strength in the diagonal direction is 446.715 N/mm2. The average horizontal tensile strength value is 420.785 N/mm2.
ANALISIS JARAK GRID HARDFACING TERHADAP NILAI KEKUATAN BENDING PADA MATERIAL ASTM A36: Hardfacing Awali, Jatmoko; Dewanto, Hizkia Alpha; Ismail , Andi Idhil
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1869

Abstract

Welding is the joining of metals in liquid form using heat energy in making products in the process of joining materials such as in the automotive sector. The development of welding has reached the additive manufacturing process, one of which is hardfacing, namely the thickening of a component that already exists in the industrial sector. In the automotive sector, many people use ASTM A36 or mild steel, namely carbon steel, for standard specifications for structural applications. Hardfacing is a process with an angle welding approach and the resulting structure has a direct relationship with the welding parameters and material characteristics during welding. Adding corner welding grids to increase the strength value of special mechanical properties such as car bodies. This research aims to determine the effect of the shape of the welding grid on the mechanical properties of GMAW welding using ER70S-6 electrodes and a welding current of 80 Ampere with variations in the weld metal spacing, namely 5 mm, 10 mm, 15 mm, and with ASTM A 36 material with a thickness of 2 mm. GMAW welding uses constant current by varying the hardfacing grid. From the research results it is known that the largest stiffness value is found at a variation of the weld metal distance of 10 mm with an average value of 1737.5 N. In the microstructure the phase formed is ferrite (F) and along the grain boundaries pearlite (P) is formed.
Perancangan Sistem Fertigasi dan Vermikompos di Kebun Sumber Berkah Kelurahan Batu Ampar Rohimsyah, Fikan Mubarok; Awali, Jatmoko; Muyassir, Nur Aushaf; Rajid, Nabila Faiza Putri; Rahmah, Fadhilah; Aurelya, Meyriska; Rohmah, Hidhayatul Isnaini; Simbolon, Samuel Caesario; Hidayat, Alfito Rafli; Majid, Nurkholis
Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) Vol 5, No 3 (2026)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/ilung.v5i3.17271

Abstract

Perkebunan Sumber Berkah di Kota Balikpapan merupakan salah satu bentuk penerapan pertanian perkotaan yang berfokus pada budidaya tanaman hortikultura secara berkelanjutan. Permasalahan utama yang dihadapi adalah menurunnya kesuburan tanah akibat penggunaan pupuk kimia serta meningkatnya volume limbah organik rumah tangga. Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan pengetahuan masyarakat mengenai pengelolaan limbah organik melalui sosialisasi pembuatan pupuk vermikompos, serta mendampingi mitra kebun dalam penerapan pembuatan dan pemanfaatannya. Metode kegiatan menggunakan pendekatan Participatory Action Research (PAR) yang melibatkan mitra kebun secara aktif dalam setiap tahap pembuatan vermikompos, mulai dari pengumpulan bahan organik, pra-pengomposan, pemberian cacing Lumbricus rubellus, hingga pemanenan selama 30 hari. Hasil kegiatan menunjukkan bahwa penggunaan vermikompos mampu meningkatkan pertumbuhan tanaman hingga 23% lebih cepat dibandingkan tanpa perlakuan, serta membantu mengurangi limbah organik di lingkungan sekitar. Sementara itu, kegiatan sosialisasi kepada masyarakat meningkatkan pemahaman peserta tentang pengelolaan limbah organik sebesar 82%. Inovasi ini diharapkan menjadi langkah nyata dalam mendukung pertanian berkelanjutan, memperkuat ketahanan pangan lokal, dan mendorong penerapan pengelolaan limbah ramah lingkungan di wilayah perkotaan. Kata kunci: Pupuk alami; Sampah organik; Perkebunan Sumber Berkah; Pertanian perkotaan;Vermikompos
Co-Authors Ahmad Syaifuddin Akbar, Rizky Al Habib, Irsyad Asroni Asroni Aurelya, Meyriska Basyaruddin Basyaruddin, Basyaruddin Darma, Daffa Irsyad Destiny, Keysi Devain Dewanto, Hizkia Alpha Fadhilah Rahmah Hidayat, Alfito Rafli Hizam, Fadli Indrawati, Dini Ismail , Andi Idhil Ismail, Ika Laksono, Andromeda Dwi Leoriza, Meutya Dwi LIA AMALIA Majid, Nurkholis Maulana, M. Arzil Moch. Agus Choiron Mohd, Yusairie Muhammad Rifani, Muhammad Murni Handayani Muthia Putri Darsini Lubis Muyassir, Nur Aushaf Nabila, Najwa Pratama, Winardi Dian Wahyu Putra, Ade Wahyu Yusariarta Rajid, Nabila Faiza Putri Rohimsyah, Fikan Mubarok Rohmah, Hidhayatul Isnaini Rudiyanto, Fahmi Simbolon, Samuel Caesario Sinambela, Maria Lena Stasiyanur, Flora Suryaningsih, Alnovia - Tajalla, Gusti Umindya Nur Tanjung, Rifqi Aulia Thesalonicha, Somalinggi Yanti, Lisda Yudy Surya Irawan Yunita Triana, Yunita