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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia ASEAN Journal of Systems Engineering Jurnal Sains dan Teknologi Jurnal Keteknikan Pertanian POROS TEKNIK Info-Teknik Indonesian Physical Review Buletin Profesi Insinyur International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Sains Teknologi dalam Pemberdayaan Masyarakat Journal of Mechanical Engineering, Science, and Innovation International Journal of Innovation in Mechanical Engineering and Advanced Materials Jurnal Inovasi Mesin
Apip Amrullah
Mechanical Engineering Department, Faculty Of Engineering, Universitas Lambung Mangkurat, Indonesia
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Innovative Structural Evaluation of a Dual-Function Cane for Elderly Mobility: A Finite Element Analysis Approach Using SolidWorks Rafana, Hadad; Amrullah, Apip; Ma'ruf, Ma'ruf; Mahmud, Rizal
Journal of Mechanical Engineering, Science, and Innovation Vol 5, No 1 (2025): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2025.v5i1.7649

Abstract

The increasing proportion of elderly individuals globally underscores the need for safe and ergonomic mobility aids that support independent living and enhance quality of life. This study presents a structural analysis of a multifunctional walking cane prototype, NeoMossa, which integrates an umbrella mechanism, aimed at addressing both mobility and environmental protection needs for elderly users. The analysis employed the Finite Element Method (FEM) using SolidWorks simulation software to evaluate the mechanical performance of the cane under static loading conditions of 300 N, 500 N, and 700 N. Key parameters assessed included Von Mises stress, strain, displacement, and factor of safety. The results demonstrated that all measured values remained within acceptable limits, with the highest stress recorded at 75.98 MPa and a minimum safety factor of 1.72 under the maximum load. These findings confirm that the cane structure is capable of withstanding typical user loads without risk of mechanical failure. The study affirms the feasibility of integrating multifunctional features into assistive devices without compromising structural safety, contributing valuable insight to the design and development of innovative mobility aids for the elderly.
Phycocyanin production from Galdieria sulphuraria 009 in palm oil mill effluent: growth, extraction, and antioxidant activity: Produksi fikosianin dari Galdieria sulphuraria 009 dalam limbah cair pabrik kelapa sawit: pertumbuhan, ekstraksi, dan aktivitas antioksidan Rahman, Delicia Yunita; Praharyawan, Swastika; Apriastini, Marsiti; Nurcahyani, Puji Rahmawati; Nafisyah, Ayu Lana; Fatriasari, Widya; Amrullah, Apip; Farobie, Obie
Jurnal Pengolahan Hasil Perikanan Indonesia Vol. 28 No. 5 (2025): Jurnal Pengolahan Hasil Perikanan Indonesia 28(5)
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v28i5.63115

Abstract

Limbah cair industri kelapa sawit (palm oil mill effluent atau POME) di Indonesia menghasilkan volume yang tinggi dan berpotensi mencemari lingkungan. Mikroalga dapat dimanfaatkan untuk mengurangi limbah sekaligus menghasilkan produk biomassa yang bernilai tambah. Penelitian ini bertujuan menentukan konsentrasi optimum POME bagi pertumbuhan mikroalga Galdieria sulphuraria 009, mengevaluasi produksi fikosianin, serta menilai aktivitas antioksidannya. Penelitian ini diawali dengan penapisan awal menggunakan 5–50% POME untuk mengidentifikasi kondisi pertumbuhan mikroalga yang optimum; budi daya dalam bioreaktor dengan variasi konsentrasi (2,5; 5,0; dan 7,5%) untuk mengevaluasi kinerja pertumbuhan; dan analisis aktivitas antioksidan serta kandungan pigmen dalam biomassa. Penapisan awal menunjukkan bahwa POME 5% merupakan konsentrasi optimal, sedangkan konsentrasi lebih tinggi menghambat pertumbuhan akibat berkurangnya penetrasi cahaya. Pada budidaya lanjutan, mikroalga dalam POME 2,5% menunjukkan hasil sebanding dengan kontrol (Allen pH 2), sedangkan konsentrasi lebih tinggi menghambat pertumbuhan akibat penaungan dan toksisitas amonia. Produksi fikosianin per volume kultur tertinggi diamati pada mikroalga yang dibudidayakan dalam POME 2,5%, dengan hasil yang sebanding dengan media kontrol. Uji aktivitas antioksidan mengonfirmasi bahwa semua ekstrak fikosianin memiliki aktivitas antioksidan yang signifikan, dengan aktivitas tertinggi pada POME 7,5%. Kandungan karotenoid dan klorofil a dievaluasi dalam biomassa segar dan residu setelah ekstraksi. Karotenoid lebih melimpah dalam biomassa segar, sedangkan klorofil a lebih tinggi dalam residu biomassa. Penelitian ini menunjukkan bahwa G. sulphuraria 009 berpotensi sebagai sumber fikosianin yang layak dalam budidaya berbasis POME, serta memberikan wawasan mengenai pemanfaatan limbah industri dan pengembangan produk bioteknologi berkelanjutan.
THE EFFECTS OF DISTILLATION TEMPERATURE AND PLASTIC LOADING ON THE IMPROVEMENT OF WASTE-DERIVED BIO-OIL PROPERTIES Irawansyah, Herry; Amrullah, Apip; Prayogi, Syafa’at; Alfahri, Syahriza
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.200

Abstract

Since plastic and food waste are both types of non-lignocellulosic biomass, these must be handled and managed correctly to avoid pollution problems and damage to the environment. Bio-oil, made from recycled materials, including plastic and food waste, is one focus of these attempts. The co-pyrolysis method is being investigated in this study as a technique of recycling plastic waste and food waste to produce biofuels with reduced environmental impact. In terms of energy efficiency, bio-oil is unequal to other fuels like coal or natural gas because of its high acidity, high oxygen content, and low thermal stability. Therefore, a vacuum distillation process is required to improve bio-oil quality by adjusting the distillation temperature from 300 to 350 OC and the percentage of plastic waste used from 30 to 50%. The bio-oil was analyzed using a Gas Chromatography-Mass Spectrometer (GC-MS). The general compound showed that acids (60%) and alcohols (20%) were the most prevalent chemical compounds, followed by phenol (4%), aldehyde (14%), aliphatic (5%), Furan (14%), and ketones (11%) at maximum temperature (350 oC) for 30-50% plastic waste. Meanwhile, the final product is affected by temperature and plastic waste (PET) ratio factors. At 350 °C and a plastic waste addition of 50%, the highest bio-oil yield is 45%.
AN EXPERIMENTAL STUDY OF THE EFFECT OF VARIATION OF IMPACT LEVELS ON WORKING EFFICIENCY OF ARCHIMEDES SCREW TURBINE ON MICRO-HYDRO POWER PLANT Nugraha, Andy; Silalahi, Dani Surya Hamonangan; Ansyah, Pathur Razi; Ramadhan, Muhammad Nizar; Amrullah, Apip; Cahyono, Gunawan Rudi
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 1 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.01.1

Abstract

Micro-hydro power plants take advantage of the energy potential of low-head airflow. with the development of technology that can support it, namely the Archimedes screw turbine as the driving force. Various parameters must be considered to determine the performance of micro hydro power plants with Archimedes screw turbines. A design is carried out with a discharge parameter flow rate of 2 l/s, a turbine slope of 300, and an immersion level variation of 0.3, 0.5, and 0.7, where the final result shows the value of torque, hydraulic power, mechanical power, generator, and efficiency, which decreases with the level of water immersion in the last blade.
Pengaruh Variasi Pulsed-Spray Time dengan Water Coolant Pada Media Pendinginan Terhadap Efisiensi dan Temperatur Panel Surya Ansyah, Pathur Razi; Cahyono, Gunawan Rudi; Budianto, Akhmad Ghiffary Budianto; Amrullah, Apip; Farobie, Obie; Jamalulail, Nanda; Lukmana, Wahyu
Jurnal Keteknikan Pertanian Vol. 13 No. 1 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.1.18-38

Abstract

Teknologi panel surya memungkinkan konversi cahaya matahari menjadi energi listrik. Akan tetapi, ada masalah yang dapat muncul pada kinerja panel surya, misalnya peningkatan suhu panel surya melebihi batas kerjanya sendiri. Suhu yang semakin meningkat akan membuat kinerja panel surya semakin berkurang. Maka, penting menjaga suhu panel surya sangat diperlukan agar performanya tetap optimal. Penelitian ini dilakukan untuk mengetahui pengaruh delay timing back and front surface spray cooling terhadap temperatur rata – rata, daya output, dan pengoptimalan energi panel surya. Pengujian ini menghasilkan temperatur panel surya sangat menurun ketika delay timing spray 10 menit senilai 58,95°C, ketika delay timing spray 20 menit senilai 70,78°C, sedangkan ketika delay timing spray 30 menit senilai 78,63°C. Metode pendinginan yang dilakukan selama 1 menit dengan variasi delay timing spray 10 menit, 20 menit, dan 30 menit. Uji eksperimental ini dapat menurunkan suhu panel surya, pada delay timing spray 10 menit menjadi 58,95°C, pada delay timing spray 20 menit menjadi 70,78°C, dan pada delay timing spray 30 menit menjadi 78,63°C. Metode pendinginan dilakukan selama 1 menit dengan delay timing spray yang bervariasi yaitu 10 menit, 20 menit dan 30 menit. Melalui pengujian ini juga diperoleh nilai energi total. Apabila delay timing spray 10, 20 dan 30 menit masing-masing sebesar 8,61 x 10-3 kWh (30982,06 Joule), 8,03 x 10-3 kWh (28890,32 Joule) dan 7,61 x 10-3 kWh (27408,06 Joule). Kesimpulan dari penelitian yang telah dilakukan adalah delay timing spray yang paling optimal delay timing spray selama 10 menit dengan suhu rata-rata sebesar 58,95°C, dan optimalisasi energi terbaik adalah dengan energi total sebesar 30982,06 Joule atau 8,61 x 10 -3kWh.
Analysis of Battery Pack Cooling System Design Using Computational Fluid Dynamics Method in Electric Vehicle Selvia; Naryanto, Rizqi Fitri; Amrullah, Apip
Jurnal Inovasi Mesin Vol. 6 No. 1 (2024): APRIL 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v6i1.1907

Abstract

The objective of this research is to address the heat increase in the battery, ensuring it remains below   40°C   through a cooling   system.   Through   Computational   Fluid   Dynamics (CFD) simulations, the impact of using Aluminium 6061, Aluminium Duralumin, and Copper, as well as the effects of cooling fluids H2O and Ethylene Glycol on the battery pack cooling system, are analyzed.  Data collection is conducted using Solidworks 2022 with the Flow Simulation feature, followed by a descriptive statistical analysis to identify the optimal cooling system for the battery pack. Simulation results indicate the most optimal performance at an inlet speed of 3 m/s. For H2O, Copper maintains a temperature of 37.14°C, while Aluminium 6061 and Aluminium Duralumin reach temperatures of 37.36°C and 37.34°C, respectively. In the case of Ethylene Glycol at a speed of 3 m/s, Copper records a temperature of 194.75°C, while Aluminium 6061 and Aluminium Duralumin achieve temperatures of 197.94°C and 195.34°C, respectively.  Based on this research, Copper and H2O are identified as the best choices.
EFFECT OF DISCHARGE VARIATION ON THE PERFORMANCE OF SINGLE BLADE ARCHIMEDES SCREW TURBINE: PREDICTION WITH COMPUTATIONAL FLUID DYNAMIC Gunawan Rudi Cahyono; Apip Amrullah; Pathur Razi Ansyah; N. Alexius Mikael; P.S.M. Reynaldi; Rusdi Rusdi
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol. 3 No. 2 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v3i2.12459

Abstract

Constructing a small-scale hydroelectric power station that can run efficiently at a head lower than 10 m is one possible method for reducing the impact of the electricity crisis in remote areas of Indonesia. The Archimedes Screw turbine is one type of turbine that is ideal for discharges below 10 m. In this study, the simulation results show that the value of Turbulences Kinetic Energy is directly proportional to the increase in flow rate but inversely proportional to the level of immersion. This type of turbine is unless well in Indonesia due to a lack of information regarding the application of low head power plants. The turbine model that is suitable for the low head is investigated in this study. Before being tested, the turbine is first designed theoretically and then numerically evaluated. With discharges of 1 l/s, 2 l/s, and 3 l/s and turbine immersion levels of 30%, 50%, and 70%, ANSYS CFD (Computational Fluid Dynamic) software was used to investigate flow rate and level of immersion in the turbine. According to the investigation findings, the discharge has a considerable impact on the turbine's movement; the higher the flow rate, the higher the power to the turbine, which produces a torque on the turbine. The simulation findings indicate that the value of Turbulence Kinetic Energy is proportional to the increase in flow rate but inversely proportional to the level of immersion.
ANALISIS DAYA LISTRIK YANG DIHASILKAN MICROBIAL FUEL CELL DENGAN VARIASI WAKTU INKUBASI DAN CAMPURAN SUBSTRAT Andy Nugraha; Aji Nihin; Apip Amrullah; Nizar Ramadhan; Pathur Razi Ansyah
Jurnal Sains dan Teknologi Vol 23 No 1 (2024): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kebutuhan masyarakat akan energi listrik terus meningkat setiap tahun. Di masa depan, kebutuhan listrik akan semakin bertambah seiring dengan pertumbuhan populasi, investasi, dan kemajuan teknologi, termasuk perkembangan di sektor pendidikan di semua jenjang. Untuk memenuhi permintaan listrik yang terus meningkat, pemerintah terus berupaya mengembangkan teknologi dan membangun pembangkit listrik. Salah satu teknologi pembangkit listrik adalah microbial fuel cell. Microbial fuel cell adalah sistem bio-elektrokimia yang memanfaatkan metabolisme alami mikroba untuk menghasilkan listrik. Dalam penelitian ini, microbial fuel cell menggunakan berbagai substrat, termasuk air cucian beras, kulit pisang kepok, serta campuran keduanya, dengan masa inkubasi 3, 5, dan 7 hari. Penelitian menunjukkan bahwa campuran kulit pisang kepok dan air cucian beras menghasilkan rata-rata 67.086 mW daya listrik, yang lebih tinggi dibandingkan substrat air cucian beras atau kulit pisang kepok secara terpisah.
Co-Authors Abdul Ghofur Achmad Aminudin Aji Nihin Akhmad Ghiffary Budianto Akhmad Syarief Alfahri, Syahriza Andy Nugraha Apriastini, Marsiti Gunawan Rudi Cahyono Irawansyah, Herry Jamalulail, Nanda Joni Riadi Joni Riadi, Joni Lana Nafisyah, Ayu Lukmana, Wahyu M. Reynaldi Perdana Saputra Ma'ruf, Ma'ruf Mahmud, Rizal Muhammad Nizar Ramadhan N. Alexius Mikael Nasrul Ilminnafik Nizar Ramadhan Obie Farobie P.S.M. Reynaldi Pagis, Arifah Pathur Razi Ansyah Prayogi, Syafa’at Rachmat Subagyo Rafana, Hadad Rahman, Delicia Yunita Rizal Mahmud Rizqi Fitri Naryanto Rusdi Rusdi Sabitah, A'yan Saputra, M. Reynaldi Perdana Selvia Silalahi, Dani Surya Hamonangan Swastika Praharyawan, Swastika Widya FATRIASARI