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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Journal of Mechanical Engineering Science and Technology Jurnal Abdi Insani Jurnal Pengabdian kepada Masyarakat Nusantara Applied Research and Smart Technology (ARSTech) Automotive Experiences
Lenggana, Bhre Wangsa
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Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences

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Static Structural Analysis of Checking Fixture Frame of Car Interior Using Finite Element Method Hanandita, Hanif Setya; Ubaidillah, Ubaidillah; Prabowo, Aditya Rio; Lenggana, Bhre Wangsa; Turnip, Arjon; Joelianto, Endra
Automotive Experiences Vol 6 No 3 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.9860

Abstract

An inspection is the most important step for the manufacturers producing their cars. This ensures the seamless compatibility of each car part, as even minor errors can lead to user discomfort during operation. To achieve that goal, the utilization of inspection tools, such as a checking fixture is essential. In this research, we will study the structure analysis of a checking fixture with Ansys software. This study aims to examine the structural strength by analyzing the impact of various design variations on the overall strength outcomes. The requirement for checking fixture is that it must meet the datum tolerance of the car with value of ± 2mm. Due to that factor, a rigid checking fixture is needed for inspecting the part without experiencing significant deformation. In static loading, the result of the first variation frame has a stress of 5.71 MPa and deformation of 0.051 mm, the second variation frame has a stress of 6.16 MPa and deformation of 0.049 mm and the third variation frame has a stress of 5.63 MPa and deformation 0.042 mm. In terms of weight, the first variation structure has 2470.48 kg, the second variation structure has 2179.93 kg and the third variation structure has 2210 kg. The second variation frame has the highest stress but it has the lightest weight, and the third variation frame has lower stress and deformation but it has a heavier weight than the second variation model. The study results that the second variation model is superior because it has the lightest weight while the three designs have small stress and deformation that still satisfy the requirement of the fixture.
Balancing the charge: the evolution of battery active equalizers in shaping a sustainable energy storage future Rovianto, Eki; Khairunnisa, Khairunnisa; Lenggana, Bhre Wangsa; Fardan, Muhammad Faris; Harsito, Catur; Prasetyo, Ari
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i3.pp1687-1710

Abstract

As the world embraces sustainable energy solutions, energy storage systems are becoming increasingly critical for the effectiveness of renewable energy sources. Batteries have emerged as a promising option. However, to fully harness the potential of batteries, the challenge of cell must be overcome. This review article delves into the evolution of battery active equalizers on the quest for sustainable energy storage solutions. The review begins by exploring the fundamental principles of battery active equalization and its significance in optimizing energy storage system performance and efficiency. Traditional battery management techniques are limited in their ability to address imbalances effectively, making active equalization a compelling alternative. The review provides a comprehensive analysis of early developments and current state-of-the-art active equalization systems. The reviewed article demonstrates successful applications, showcasing how active equalizers can significantly improve energy storage performance and overall system stability. While active equalization offers tremendous promise, it is not without challenges. The review explores how these technologies seamlessly fit with renewable energy sources and grid systems, opening up possibilities for future energy infrastructure. Industry perspectives play a vital role in realizing innovative technologies. Therefore, the review incorporates insights from leading experts, presenting their viewpoints on the adoption of battery active equalizers.
Redesign of water-diesel emulsion fuel mixer Mahadi, Abram Anggit; Santoso, Budi; Ubaidillah, Ubaidillah; Lenggana, Bhre Wangsa
Applied Research and Smart Technology (ARSTech) Vol. 3 No. 1 (2022): Applied Research and Smart Technology
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/arstech.v3i1.406

Abstract

Emissions and fuel consumption are essential parameters to indicate the working of a combustion engine. This paper discusses the methods to achieve lower emissions and efficient fuel consumption. One of the methods is by making emulsion fuel. The emulsion-making methods are surfactant emulsion, micro-emulsion, ultrasonic emulsion, and real-time emulsion non-surfactant (RTES). In the research, the emulsion fuel is a mixture of B30 Biodiesel and water without surfactant that is supplied in real-time after being mixed in a mixer. The ratio is 85% biodiesel and 15% water. The RTES mixer in the old model has a big size, and high-power consumption of about 150-433,5 W. This research's purpose is to develop a simple design and low power consumption of the RTES Mixer. The new RTES mixer design only needs 150 W motor power. Its dimension is more superficial and produces tiny droplets with a main diameter range between 0.1 to 0.5 ?m, with good-mixed visually.  
Structural Simulation of Wheelchair Ramp using Finite Element Method Lenggana, Bhre Wangsa; Nugroho, Agung; Ubaidillah, Ubaidillah
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 2 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i12024p306

Abstract

Wheelchairs are essential mobility aids for people with disabilities, but they are often limited to flat surfaces and cannot overcome height differences. Portable ramps are an effective solution to overcome this limitation. This research aims to simulate and analyze the structure of a portable ramp for wheelchairs. Simulations were conducted using finite element method analysis software to assess the portable ramp's von Mises stress, deformation, and safety factor in various loading positions. Finite element method (FEM) analysis software was utilized to evaluate key mechanical properties, including von Mises stress, deformation, and safety factor, under different loading conditions and positions. The simulation results demonstrated that the proposed portable ramp design can safely endure various load placements without exceeding the material's stress limits. The von Mises stress, deformation, and safety factors remained within acceptable ranges, validating the ramp's structural integrity and safety. Based on the initial findings, design modifications were implemented to further enhance the ramp's strength, durability, and user safety. This research not only confirms the effectiveness of the proposed ramp but also suggests improvements to optimize its performance. The final portable ramp design offers a reliable, cost-effective, and market-competitive solution that can significantly improve the mobility and independence of wheelchair users, enabling them to navigate a broader range of environments and overcome everyday obstacles with greater ease and confidence.
PENDAMPINGAN TEKNIS PADA INSTALASI INDUSTRI LOGAM (IPT LOGAM) KABUPATEN PURBALINGGA GUNA PENINGKATAN PRODUKTIVITAS PERMESINAN PRESS DAN LATHE Prakoso, Indro; Putra, Dandun Mahesa Prabowo; Ramadhan, Muhammad Arka; Kusmana, Naufal Adryan; Wardhana, Ezra Prasetya Panca; Hapsari, Fatma Archadia; Deliyana, Firda; Irvan, Mochammad; Huaida, Akasa; Ristiani, Hana Mareta; Hanifah, Azmi; Lenggana, Bhre Wangsa
Jurnal Abdi Insani Vol 12 No 8 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i8.2798

Abstract

Instalasi Industri Logam (IPT) Purbalingga melayani permintaan konsumen terhadap proses permesinan, beberapa jasa permesinan yang tersedia antara lain lathe atau bubut, milling, frais, las, dan masih banyak lagi jenis lainya. Proses permesinan paling sering yang dilakukan adalah permesinan lathe dan press. Lokasi IPT yang dekat dengan pengrajin knalpot motor menyebabkan permintaan pemesinan lathe dan press sangat tinggi. Kedua mesin tersebut rata-rata memiliki umur 10 tahun, sehingga bebera pakali mengalami break down dan produktivitasnya tidak stabil. Hasil observasi perlu pendampingan dalam pengukuran dan evaluasi produktivitas mesin bubut diperlukan. Pengukuran produktivitas ini dimaksudkan untuk menilai kemampuan IPT Logam Purbalingga untuk meningkatkan produktivitasnya. Nilai produktivitas dari setiap komponen untuk permesinan lathe bernilai lebih dari 1, yang terdiri atas 1.25  untuk  produktivitas  tenaga  kerja, 1.22 untuk produktivitas energi, dan 1 untuk produktivitas penggunaan waktu. Perbaikan yang diterapkan kepada IPT Logam Purbalingga untuk menyusun dan menerapkan program maintenance preventif yang terjadwal secara rutin. Sedangkan untuk permesinan press didapatkan hasil evaluasi produktivitas aktual sebesar Rp 800.000/bulan, Untuk produktivitas tenaga kerja permesinan press berada di angka 0,246, nilai ini masih jauh dari nilai impas produktivitas yaitu 1. Usulan dan penerapan perbaikan pada permesinan press yaitu penentuan waktu baku proses pada 18,33 detik, waktu baku tersebut dijadikan standar dalam Standar Operasional Prosedur IPT Logam Purbalingga.
Edukasi dan Pendampingan Pembukuan Keuangan Sederhana Bagi KWT Sejahtera Mandiri Saputro, Wahyu Adhi; Nurdiani, Ulfah; Harahap, Fitri Amalinda; Prabowoputra, Dandun Mahesa; Akhmad Yani, Ameliyana Rizky Syamara Putri; Lenggana, Bhre Wangsa
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 5 No. 4 (2024): Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN) Edisi September - Desembe
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v5i4.4326

Abstract

Permasalahan mengenai pembukuan keuangan nyatanya masih dialami oleh beberapa kelompok salah satunya KWT Sejahtera Mandiri. Kelompok ini memiliki beberapa usaha yang dijalani seperti budidaya hortikultura namun kelompok ini kurang megnetahui apakah usaha yang dijalani mengalami keuntungan atau tidak mengingat tidak adanya pembukuan keuangan yang dilakukan. Kegiatan pengabdian ini bertujuan untuk memberikan edukasi dan pendampingan pembukuan keuangan bagi KWT Sejahtera Mandiri. Metode kegiatan pengabdian ini dilakukan secara service learning pada 20 orang anggota aktif KWT Sejahtera Mandiri. Pengukuran peningkatan pengetahuan dan keterampilan digunakan kuesioner before dan after.  Berdasarkan kegiatan pengabdian yang telah dilakukan mengalami kesuksesan penyelenggaraan khususnya dalam hal transfer knowledge dan praktik secara langsung pembukuan keuangan sederhana menggunakan buku kwarto kas. Hasil kegiatan juga menyatakan adanya kenaikan pengetahuan dan keterampilan sebesar 30% dalam hal pembukuan keuangan sederhana yang dialami oleh anggota KWT Sejahtera Mandiri. Tentunya kegiatan pengabdian ini juga akan ditindaklanjuti dengan penggunaan aplikasi berbasis digital untuk membantu meringankan tugas anggota KWT Sejahtera Mandiri dalam pembukuan keuangan mengigat perkembangan teknologi saat ini sangat berkembang.
The Influence of Hard and Soft Magnetic Nanoparticle Additives in Magnetorheological Fluids on the Performance of Magnetorheological Dampers for Motorcycle Arifin, Rahmad Rizki Nur; Lenggana, Bhre Wangsa; Ubaidillah, Ubaidillah; Bahiuddin, Irfan; Nugroho, Kacuk Cikal; Imaduddin, Fitrian; Mazlan, Saiful Amri; Turnip, Arjon
Automotive Experiences Vol 9 No 1 (2026): Issue in Progress
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.14527

Abstract

Magnetorheological Fluids (MRFs) are widely utilised in semi-active suspension systems due to the ability to dynamically alter their viscosity. The frequently issue in the application of MRFs are sedimentation and aggregation stability. To address this issue, the MRFs have been modified by incorporating hard and soft magnetic nanoparticles. The MRFs investigated were MRF-carbonyl iron powder (CIP), MRF-CIP+cobalt ferrite (CoFe2O4), and MRF-CIP+manganese ferrite (MnFe2O4). The objective of this work is to evaluate the performance of these MRFs to implement the results to motorcycle dampers. To ascertain the MRFs’ magnetic properties and viscosity (η), vibrating sample magnetometer (VSM) and rheometer testing were conducted, respectively. The performance of magnetorheological valve (MRV) was analysed using finite element method magnetics (FEMM) simulations with variations in fluid gaps and types of MRFs. The results indicated that the MRV design with a fluid gap of 0.9 mm, utilizing MRF-CIP+CoFe2O4, exhibited an appropriate combination to fulfil the damping force (Fd) requirements of the motorcycle suspension system. The damping force varied from 0.941 to 3.858 kN, indicating a growth of around 310%. This study demonstrates that the proposed MRV design and the modification of MRFs could enhance the performance of the motorcycle damping system, as evidenced by the experimental and simulation results. The house of quality (HoQ) demonstrates that the proposed magnetorheological damper (MRD) is significantly superior to its competitors in effectively fulfilling customer requirements and expectations.
PENINGKATAN KUALITAS PRODUK INDUSTRI RUMAH TANGGA BLACK GARLIC MELALUI ALAT FERMENTASI EFISIEN DAN KEMASAN MODERN Prabowoputra, Dandun Mahesa; Prasetyo, Gunawan; Pasha, Muhammad; Nurhidayat, Akhlis Rahman Sari; Lenggana, Bhre Wangsa; Yani, Ameliyana Rizky Syamara Putri Akhmad
Jurnal Abdi Insani Vol 13 No 1 (2026): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v13i1.3446

Abstract

Home industries play a strategic role in supporting local economic growth and community empowerment. One of the leading products from these industries is black garlic, known for its high health benefits. However, the quality of black garlic products from these industries is often suboptimal due to limited efficient fermentation technology and a lack of modern packaging that can attract market interest. Therefore, this program is designed to improve the quality of black garlic products through the development of efficient fermentation equipment and the implementation of modern packaging. The main objective of this program is to increase production capacity, quality consistency, and the competitiveness of black garlic products from these industries, with aspects of aesthetics, functionality, and clear product information, such as health benefits and natural production processes. Training is provided to home business owners to improve their skills in operating new fermentation equipment and adopting modern packaging techniques. The mentoring activities include training in digital marketing strategies, social media, and packaging design. The program's outcomes include increased production process efficiency, consistent black garlic quality, and product added value through modern packaging. The expected long-term impact is increased household income, market expansion, and a strengthened position of the home industry in the local economy. With an approach focused on integrating simple technology, design innovation, and marketing strategies, this program supports the sustainability of home industries based on local wisdom. Through this program, it is hoped that synergy will be created between business actors, academics, and the government to strengthen an innovative and highly competitive home industry ecosystem, while simultaneously making a tangible contribution to sustainable local economic development.
Co-Authors Aditya Rio Prabowo Akhmad Yani, Ameliyana Rizky Syamara Putri Ari Prasetyo Arifin, Rahmad Rizki Nur Arjon Turnip Azmi Hanifah, Azmi Bahiuddin, Irfan Deliyana, Firda Dwi Budi Santoso Endra Joelianto Fardan, Muhammad Faris Fitri Amalinda Harahap Hanandita, Hanif Setya Hapsari, Fatma Archadia Harsito, Catur Huaida, Akasa Imaduddin, Fitrian Indro Prakoso Irvan, Mochammad Khairunnisa Khairunnisa Kusmana, Naufal Adryan Mahadi, Abram Anggit Mazlan, Saiful Amri Nugroho, Agung Nugroho, Kacuk Cikal Nurhidayat, Akhlis Rahman Sari Pasha, Muhammad Prasetyo, Gunawan Putra, Dandun Mahesa Prabowo Ramadhan, Muhammad Arka Ristiani, Hana Mareta Rovianto, Eki Saputro, Wahyu Adhi Ubaidillah Ubaidillah Ulfah Nurdiani, Ulfah Wardhana, Ezra Prasetya Panca Yani, Ameliyana Rizky Syamara Putri Akhmad