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All Journal International Journal of Advances in Applied Sciences Rekayasa Mesin Community Development Journal: Jurnal Pengabdian Masyarakat JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Automotive Experiences Indonesian Community Journal Impression : Jurnal Teknologi dan Informasi
Aris Purwanto
Universitas Negeri Surabaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Experimental study of RDF-5 performance based on natural waste on fast pyrolysis process on the quality of the liquid smoke Herman Saputro; Laila Fitriana; Aris Purwanto; Riyadi Muslim; Muchlis Mahmuddin
International Journal of Advances in Applied Sciences Vol 12, No 3: September 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v12.i3.pp250-256

Abstract

Energy problems are one of the cases faced by almost all countries in the world. No longer found oil reserves in significant quantities causing problems in the energy sector. The world's energy needs continue to increase and become a global problem in the use of energy in various sectors resulting in an energy crisis. The use of waste-to-energy (WtE) technology is appropriate, considering that energy needs continue to increase along with the increasing amount of waste that is not managed and hurts the ecosystem. Refuse-derived fuel (RDF) is a waste management technique that converts waste into bio-solid fuel. RDF is produced from the mechanical separation of combustible and non-combustible fractions from waste. Utilizing RDF biomass from durian peel and sugar palm is one of the efforts to maximize the pyrolysis process in organic waste, increasing the combustion potential. Processing durian skin and sugar palm waste into RDF will maximize the potential of the combustion results, which can later facilitate testing. This study also aims to utilize sugar palm waste and durian peel to have a use value as an alternative fuel. This research was an experimental study, fast pyrolysis was employed by using 300 grams both in durian and sugar palm, and the temperature was varied from 400, 500, and 600 °C. The results showed that the test of liquid smoke RDF-5 sugar palm at a temperature of 400 °C at 112 mL and RDF-5 durian at 600 °C at 137 mL.
MATHEMATICS MODELLING AND EXPERIMENTAL STUDY THE EFFECT OF VORTEX WATER TURBINE BLADE DESIGN OF TURBINE EFFICIENCY Fitriana, Laila; Saputro , Herman; Purwanto, Aris; Huda, Damar Sunanil; Muslim, Riyadi
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.v16i1.1899

Abstract

The current demand for electrical energy is crucial to support facilities and infrastructure across various sectors, including household, public, and industrial areas. In Indonesia, the reliance on fossil fuels for electricity generation remains high, contributing to significant emissions. Renewable energy sources, such as water energy, present a viable solution to mitigate these emissions and enhance environmental sustainability due to their eco-friendly and sustainable characteristics. Micro hydro energy can be generated by micro-scale power plants using hydropower by converting fluid rotation into electrical energy called Gravitational Water Vortex Power Plant. In water vortex power plant, the blades have a significant influence on the produced power of turbine. For this reason, it is necessary to have a suitable blades design to produce optimal power and efficiency. This study investigates the impact of different vortex turbine blade shapes straight blade, L blade, and curved blade. We used numerical and simulation to investigate the power and efficiency of vortex-type water turbines. Simulation results indicated significant effects of blade shape variations and the distance between blades and the outlet on turbine performance. The straight blade exhibited a tangential velocity of 2.95 m/s and torque of 1.49 Nm, producing 20.94 watts with an efficiency of 84.71%. The L blade demonstrated a tangential velocity of 2.84 m/s and torque of 1.54 Nm, yielding 20.82 watts with an efficiency of 84.3%. In contrast, the curved blade showed a tangential velocity of 2.83 m/s and torque of 1.21 Nm, generating 16.32 watts with an efficiency of 65.97%. Experimental testing revealed that the curved blade produced the highest power and efficiency at 11.64 watts and 23.56%, respectively. The optimal distance between the blade and the outlet was determined to be 2 cm, achieving the same power and efficiency values.
Pelatihan Hidroponik Sebagai Upaya Peningkatan Keterampilan dan Ketahanan Pangan Siswa di Sekolah Indonesia Davao (SID) Filipina Priyo Heru Adiwibowo; Ahmad Saepuddin; Akhmad Hafizh Ainur Rasyid; Aisyah Endah Palupi; Muhaji Muhaji; I Made Arsana; A Grummy Wailanduw; Indra Herlamba Siregar; Aris Ansori; Mochamad Arif Irfa’i; Hanna Zakiyya; Aris Purwanto
I-Com: Indonesian Community Journal Vol 5 No 1 (2025): I-Com: Indonesian Community Journal (Maret 2025)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/icom.v5i1.6680

Abstract

Hydroponics training at the Indonesian School of Davao (SID) Philippines aims to improve students' skills in growing crops using soilless methods. Hydroponics is an effective solution for sustainable agriculture in countries with limited land. This training was carried out in three stages: pre-activity, implementation, and evaluation. The pre-activity stage identifies problems in implementing modern agricultural technology in schools. During implementation, students gain theoretical and practical understanding of hydroponic systems, including planting media selection, plant care, and nutrient management. Evaluation is carried out to assess the skills students acquire after training. Participants' response to the training reached 97%, reflecting high satisfaction and interest in the material presented. These findings confirm that hydroponic training can be an effective solution in preparing students to face the challenges of sustainable agriculture in the future. The results of the training show that students are able to manage hydroponic systems independently and understand the importance of environmentally friendly agriculture, as well as the skills needed to face agricultural challenges in the future.
Numerical Study of Hydrogen Enrichment on Stoichiometric DME–Air Premixed Flames Aris Purwanto; Herman Saputro; Akhmad Faruq Alhikami; Riyadi Muslim; Eka Dwi Ariyanto; Fudhail Abdul Munir
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.15766

Abstract

Dimethyl ether (DME), an alternative fuel lacking carbon–carbon bonds, offers the potential for clean combustion with minimal soot emissions. Despite this advantage, DME exhibits relatively low initial reactivity and flame-propagation velocity under premixed conditions, which constrains its stability and operational flexibility. This study presents a numerical investigation of hydrogen enrichment effects on DME–air combustion characteristics and mechanisms, with emphasis on microkinetic behavior and flame structure. The investigation employs one-dimensional (1D) and two-dimensional (2D) simulations to assess adiabatic flame temperature, laminar flame propagation velocity, elementary reaction rates, dominant reaction pathways, and distributions of temperature and OH radicals. Results from 1D simulations indicate that introducing hydrogen at low fractions (approximately 5%) markedly increases both flame temperature and propagation velocity by enhancing the H–O–OH radical pool. When hydrogen fractions exceed 10%, further improvements in combustion performance plateau as the system nears chemical equilibrium. Kinetic analysis reveals that hydrogen acts as a key modulator, shifting DME oxidation from initiation-dominated reactions to hydrogen-abstraction and chain-branching regimes. Two-dimensional simulations corroborate that this mechanistic shift produces a more compact flame, advances heat release, and increases the concentration of OH radicals by an order of magnitude. Collectively, these results demonstrate that hydrogen functions as a microkinetic enhancer rather than merely a fuel additive and indicate that moderate enrichment (5–10%) is sufficient to optimize DME combustion.
Effect of Anti-lock Braking System Modulation Frequency on Flywheel-Based Energy Harvesting During Panic Braking Agung Prijo Budijono; I Nyoman Sutantra; Agus Sigit Pramono; Aris Purwanto; Po-Hung Lin
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.16210

Abstract

A considerable portion of braking energy in electric vehicles is dissipated as heat, especially during severe or panic braking. This study experimentally investigates the effect of anti-lock braking system (ABS) modulation frequency on flywheel-based energy harvesting during panic braking using a laboratory-scale Flywheel Regenerative Capture System (FRCS). The proposed setup integrates an ABS braking unit, a magnetic clutch, a flywheel, and an electrical generator to recover part of the braking energy while maintaining braking stability. Experiments were conducted at ABS modulation frequencies of 10, 20, 30, 40, and 50 Hz. Braking performance was evaluated using wheel-speed response, slip ratio, braking time, braking distance, flywheel rotational response, and generated electrical power. At an initial braking speed of 1000 rpm, the ABS braking process operated within a slip-ratio range of approximately 0.17–0.38, while the shortest braking distance under regenerative braking reached about 15.83 m at 40 Hz, compared with about 19.58 m at 10 Hz without regenerative braking. The 10 Hz setting produced the most stable deceleration pattern, the highest flywheel rotational response, and the highest electrical output, whereas higher frequencies increased fluctuation and reduced effective torque transfer to the generator. These findings indicate that ABS modulation frequency strongly influences both braking stability and flywheel-based energy harvesting performance. The study demonstrates the feasibility of integrating a flywheel regenerative capture system with ABS-controlled panic braking, providing a basis for further vehicle-scale development.
Enhancing Stoichiometric Methane-Air Flames: The Role of N2O Replacement Aris Purwanto; Herman Saputro; Akhmad Faruq Alhikami; Fudhail Abdul Munir
Automotive Experiences Vol. 8 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.13422

Abstract

The oxidizer is used in aviation propellants for its relatively high impulse density and non-toxic nature. At elevated temperatures, nitrous oxide (Nâ‚‚O) decomposes into approximately 33% oxygen (Oâ‚‚) and 67% nitrogen (Nâ‚‚), providing a higher oxygen content than ambient air. This decomposition enables Nâ‚‚O to produce higher flame temperatures than air. Previous studies have shown that Nâ‚‚O addition improves flame stability in methane combustion systems. This study examined the substitution of Oâ‚‚ with Nâ‚‚O in stoichiometric methane”“air premixed flames, using both numerical and experimental methods. One-dimensional and two-dimensional simulations with CHEMKIN PRO revealed that replacing air with Nâ‚‚O increases flame temperature but reduces laminar flame speed, mainly due to lower local oxygen concentrations in the reaction zone. The simulations also showed that nitrogen oxides (NOâ‚“) emissions increase significantly in the post-reaction zone, while carbon monoxide (CO) and carbon dioxide (COâ‚‚) emissions decrease. Experimental results confirmed that controlled Nâ‚‚O addition enhances flame stability, but excessive concentrations can trigger combustion instabilities. Overall, the findings indicate that introducing up to 20% Nâ‚‚O can increase flame temperature and reduce CO emissions in methane flames.
Workshop Desain Produk Menggunakan Software CAD untuk Siswa SMA/SMK di Sekolah Indonesia Kota Kinabalu Malaysia Priyo Heru Adiwibowo; Ahmad Saepuddin; Akhmad Hafizh Ainur Rasyid; Muhammad Effendy; Muhaji; I Made Arsana; A Grummy Wailanduw; Indra Herlamba Siregar; Ika Nurjannah; Bellina Yunitasari; Aris Purwanto; Agung Prijo Budijono; Anovan Fadhil Muhammad
JURPIKAT Vol 7 No 1 (2026): 7.1 2026
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/jurpikat.v7i1.2937

Abstract

Workshop Desain Produk menggunakan software CAD merupakan bagian dari kegiatan Pengabdian kepada Masyarakat (PkM) yang diselenggarakan oleh Program Studi S1 Teknik Mesin Universitas Negeri Surabaya di Sekolah Indonesia Kota Kinabalu (SIKK). Kegiatan ini bertujuan meningkatkan keterampilan digital dan kreativitas siswa SMA/SMK melalui pembelajaran desain berbantuan komputer menggunakan perangkat lunak open source FreeCAD. Workshop dilaksanakan selama satu hari dengan materi pengenalan CAD dan FreeCAD, navigasi antarmuka, alur kerja desain produk, serta praktik pembuatan model tiga dimensi sederhana. Evaluasi kegiatan dilakukan melalui penyebaran angket kepada 30 peserta untuk mengukur pemahaman materi, kemudahan penggunaan aplikasi, kualitas fasilitator, dan manfaat kegiatan. Hasil evaluasi menunjukkan respons yang sangat positif, dengan lebih dari 85% peserta menyatakan terbantu dan memperoleh keterampilan baru. Selain itu, dokumentasi kegiatan dan penandatanganan Implementation Agreement (IA) antara UNESA dan SIKK memperkuat kerja sama kelembagaan. Secara keseluruhan, workshop ini efektif meningkatkan kompetensi digital dan motivasi siswa serta berpotensi dikembangkan sebagai program pelatihan berkelanjutan
Pengaruh Penambahan Konsentrasi Oksigen dalam Laminar Premixed Flame dengan Bahan Bakar Metana Aris Purwanto
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 2 (2025): July 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i2.975

Abstract

enelitian ini bertujuan untuk mengetahui pengaruh penambahan persentase jumlah oksigen pada laminar premixed flames dengan bahan bakar metana, dengan menggunakan salah satu perangkat lunar 1D yaitu CHEMKIN Pro kami melakukan analisis terhadap laminar flame speed, adiabatic flame temperature dan entropy generation rate. Pada penelitian ini mekanisme GRI 3.0 dipilih karena mekanisme ini sering digunakan untuk memodelkan pembakaran dengan bahan bakar hydrokarbon. Berdasarkan hasil simulasi dengan menggunakan perangkat lunak CHEMKIN Pro, peningkatan konsentrasi oksigen meningkatkan Adiabatic flame temperature, laminar flame speed, dan entropy generation. Berdasarkan hasil simulasi, konsentrasi oksigen sebesar 33% menghasilkan nilai tertinggi untuk suhu nyala adiabatik, laminar flame speed, dan entropy generation. Meskipun demikian, Secara aplikatif, konsentrasi oksigen pada kisaran 26% dapat dianggap sebagai titik kompromi yang relatif aman dan efisien, karena menghasilkan peningkatan kinerja termal tanpa lonjakan entropy generation yang terlalu tinggi. Konsentrasi ini cocok diterapkan pada sistem burner gas.   This study aims to determine the effect of increasing the percentage of oxygen on laminar premixed flames with methane fuel, using one of the 1D lunar devices, namely CHEMKIN Pro, we analyzed the laminar flame speed, adiabatic flame temperature, and entropy generation rate. In this study, the GRI 3.0 mechanism was chosen because this mechanism is often used to model combustion with hydrocarbon fuels. Based on the simulation results using CHEMKIN Pro software, increasing oxygen concentration increases Adiabatic flame temperature, laminar flame speed, and entropy generation. Based on the simulation results, an oxygen concentration of 33% produces the highest values for adiabatic flame temperature, laminar flame speed, and entropy generation. However, in practice, an oxygen concentration in the range of 26% can be considered a relatively safe and efficient compromise point, because it results in increased thermal performance without too high a surge in entropy generation. This concentration is suitable for application in gas burner systems.  
Pengaruh Rasio Sudu Terpancung Berpenampang Segitiga Terhadap Kinerja Turbin Crossflow Priyo Heru Adiwibowo; Grummy Walianduw; Ika Nurjannah; Aris Purwanto
Impression : Jurnal Teknologi dan Informasi Vol. 3 No. 2 (2024): July 2024
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v3i2.1070

Abstract

Energi merupakan kebutuhan fundamental bagi kehidupan manusia. Salah satu alternatif energi terbarukan adalah Pembangkit Listrik Tenaga Mikrohidro (PLTMH), yaitu sistem pembangkit skala kecil yang memanfaatkan aliran air. Pada PLTMH, turbin crossflow banyak digunakan, namun memiliki keterbatasan dalam menghasilkan daya. Penelitian ini bertujuan untuk menganalisis pengaruh rasio sudu terpancung berpenampang segitiga terhadap kinerja turbin crossflow poros horizontal. Penelitian ini menggunakan metode eksperimen dengan memvariasikan rasio sudu terpancung  0,2; 0,4; 0,6, dibandingkan dengan sudu v yang tidak terpancung (rasio 1), dan plat datar (rasio 0) pada turbin crossflow poros horizontal. Jumlah sudu yang digunakan adalah 3 yang akan diuji dengan variasi kapasitas air sebesar, 11,024 L/s, 14,322 L/s,  dan 18,113 L/s dengan variasi pembebanan terhadap daya dan efisiensi. Hasil penelitian menunjukkan bahwa daya maksimum diperoleh pada rasio sudu terpancung 0,4 dengan kapasitas aliran 18,113 L/s dan beban 8000 gram sebesar 4,204 Watt. Efisiensi tertinggi dicapai pada rasio sudu terpancung yang sama, yaitu 0,4, dengan kapasitas 11,024 L/s dan beban 5000 gram sebesar 85,77%. Pencapaian ini disebabkan karena pada rasio sudu terpancung 0,4 aliran dapat dimanfaatkan secara lebih optimal sehingga menghasilkan putaran (RPM) yang tinggi serta torsi yang lebih besar.   Energy is a fundamental need for human life. One renewable energy alternative is the Microhydro Power Plant (PLTMH), a small-scale power generation system that utilizes water flow. In PLTMH, crossflow turbines are widely used, but have limitations in generating power. This study aims to analyze the effect of the truncated blade ratio with a triangular cross-section on the performance of a horizontal-axis crossflow turbine. This study uses an experimental method by varying the truncated blade ratio of 0.2; 0.4; 0.6, compared to untrimmed v-blades (ratio 1), and flat plates (ratio 0) in a horizontal-axis crossflow turbine. The number of blades used is 3 which will be tested with variations in water capacity of 11,024 L/s, 14,322 L/s, and 18,113 L/s with variations in loading on power and efficiency. The results of the study showed that the maximum power was obtained at a cut-off blade ratio of 0.4 with a flow capacity of 18.113 L/s and a load of 8000 grams of 4.204 Watts. The highest efficiency was achieved at the same cut-off blade ratio, namely 0.4, with a capacity of 11.024 L/s and a load of 5000 grams of 85.77%. This achievement was due to the fact that at a cut-off blade ratio of 0.4 the flow could be utilized more optimally, resulting in high rotation (RPM) and greater torque.  
INOVASI MESIN PEMBELAH BAMBU KARYA MAHASISWA SEBAGAI SOLUSI PENINGKATAN PRODUKTIVITAS UMKM ANYAMAN DI DESA SEKETI, SIDOARJO Aris Purwanto; Handini Novita Sari; Akhmad Hafizh Ainur Rasyid; Aris Ansori; Iskandar Iskandar
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 7 No. 4 (2026): Vol. 7 No. 4 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v7i4.57435

Abstract

UMKM anyaman bambu di Desa Seketi, Sidoarjo, menghadapi kendala utama pada tahap pembelahan bambu yang masih dilakukan secara manual, sehingga berdampak pada rendahnya produktivitas dan kualitas hasil yang tidak seragam. Kondisi ini menjadi hambatan dalam meningkatkan kapasitas produksi serta memenuhi permintaan pasar yang terus meningkat. Oleh karena itu, kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan produktivitas melalui penerapan mesin pembelah bambu sederhana yang sesuai dengan kebutuhan UMKM. Metode pelaksanaan meliputi identifikasi kebutuhan mitra, perancangan dan pembuatan mesin, pelatihan penggunaan, serta evaluasi kinerja sebelum dan sesudah implementasi. Hasil kegiatan menunjukkan bahwa penggunaan mesin mampu menurunkan waktu pembelahan dari ±10 menit menjadi ±3 menit per batang serta meningkatkan kapasitas produksi dari ±20 batang menjadi ±60 batang per hari. Selain itu, kualitas hasil pembelahan menjadi lebih seragam dan kebutuhan tenaga kerja lebih efisien. Temuan ini menunjukkan bahwa penerapan teknologi tepat guna berbasis mesin sederhana memiliki peran penting dalam meningkatkan produktivitas dan daya saing UMKM anyaman bambu secara berkelanjutan
Co-Authors A. Grummy Wailanduw AGUNG PRIJO BUDIJONO Agung Prijo Budijono Agus Sigit Pramono Ahmad Saepuddin Ahmad Saepuddin Aisyah Endah Palupi Akhmad Faruq Alhikami Akhmad Hafizh Ainur Rasyid Anovan Fadhil Muhammad Aris Ansori Aris Ansori Ariyanto, Eka Dwi Bellina Yunitasari Fitriana, Laila Fudhail Abdul Munir Grummy Walianduw HAFIZH AINUR RASYID, AKHMAD Handini Novita Sari Hanna Zakiyya Herman Saputro Herman Saputro Huda, Damar Sunanil I Made Arsana I Made Arsana I Nyoman Sutantra Ika Nurjannah Indra Herlamba Siregar Indra Herlamba Siregar Iskandar Iskandar MOCHAMAD ARIF IRFAI Muchlis Mahmuddin Muhaji Muhaji Muhaji Muhammad Effendy Muslim, Riyadi Po-Hung Lin Priyo Heru Adiwibowo Priyo Heru Adiwibowo Riyadi Muslim Riyadi Muslim Saputro , Herman