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Bahdin Ahad Badia
Universitas Halu Oleo
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Perancangan dan Analisis Struktural Belt Konveyor Mesin Pengayak Pasir Tipe Rotary Berbasis Simulasi Autodesk Inventor untuk Meningkatkan Produktivitas Abd Kadir; Bahdin Ahad Badia; Muhammad Idris Putra; Citra Yurnidar Syah
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 12, No 1 (2026): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v12i1.14861

Abstract

Proses pengayakan pasir secara manual di industri konstruksi memiliki produktivitas rendah dan hasil yang tidak konsisten. Penelitian ini bertujuan untuk merancang belt konveyor mesin pengayak pasir tipe rotary dan menganalisis kekuatan struktural rangka menggunakan material aluminium 6061-T6. Metode penelitian meliputi perhitungan manual menggunakan teori mekanika teknik dan simulasi Finite Element Analysis (FEA) dengan software Autodesk Inventor 2020. Parameter yang dianalisis mencakup tegangan maksimum, regangan, displacement, dan faktor keamanan pada rangka mesin dengan beban operasi 4,165 N. Hasil perhitungan manual menunjukkan tegangan maksimum 71,126 MPa, regangan 0,001032, displacement 0,1912 mm, dan faktor keamanan 3,866. Hasil simulasi Autodesk Inventor memberikan tegangan maksimum 52,16 MPa, regangan 0,000635, displacement 0,4068 mm, dan faktor keamanan 5,272. Kedua metode menunjukkan deviasi 26,7% yang masih dalam rentang dapat diterima dan mengkonfirmasi bahwa rangka aman dengan faktor keamanan >3. Mesin yang dirancang mampu mengangkut dan menyaring pasir dengan kapasitas 5,7 ton/jam menggunakan motor listrik 2 HP, meningkatkan produktivitas 11-19 kali lipat dibandingkan metode manual (0,3-0,5 ton/jam). Kecepatan belt optimal 0,5 m/s dengan efisiensi pengayakan 92%. Desain ini telah tervalidasi dan siap untuk fabrikasi prototype.
Analisis Kinerja Metode Charging–Discharging Berbasis Arduino untuk Pengukuran Resistansi Sensor Elastis Jalaluddin Jumhur; Bahdin Ahad Badia
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 12, No 1 (2026): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v12i1.15167

Abstract

Penelitian ini menganalisis kinerja metode charging-discharging berbasis Arduino Nano untuk pengukuran resistansi sensor elastis (stretchable sensor) berbahan silikon yang dilapisi grease konduktif, dengan dukungan Universal Tensile Machine (UTM) rancang bangun mandiri sebagai perangkat pengujian elektromekanikal berbiaya rendah. Kebutuhan terhadap instrumen pengujian yang terjangkau dan mudah dimodifikasi menjadi latar belakang penelitian ini, mengingat alat elektromekanikal komersial umumnya memiliki biaya investasi yang sangat tinggi sehingga membatasi aksesibilitas bagi peneliti dengan sumber daya terbatas. Spesimen sensor elastis difabrikasi dari lembaran silikon laboratorium berukuran panjang 80 mm, lebar 10 mm, dan ketebalan 0,58 mm. Pengujian dilakukan selama 30 siklus tarik-lepas pada kecepatan konstan 200 mm/menit. Modul pengukur resistansi dirancang berdasarkan prinsip pembagi tegangan dengan rangkaian resistor bertingkat dari 100 Ω hingga 1 GΩ yang dikombinasikan dengan transistor PNP, sehingga mampu mengukur rentang resistansi yang sangat luas secara adaptif. Kinerja sistem divalidasi terhadap LCR-meter komersial (East Tester) dan menghasilkan koefisien korelasi R² = 0,9003, yang membuktikan bahwa metode charging-discharging berbasis Arduino mampu memberikan pengukuran resistansi yang akurat dan andal dalam skala laboratorium, sekaligus membuka potensi penerapannya pada pengembangan sensor elastis untuk aplikasi soft robotic dan sistem wearable.   
A SYSTEMATIC REVIEW OF MANUAL AND EQUIPMENT-BASED DEMOLITION TECHNIQUES FOR LOW-RISE BUILDINGS: TECHNICAL PERFORMANCE, SAFETY IMPLICATIONS, AND METHOD SELECTION CRITERIA Raja Agung Hasudungan Simanjuntak; Mardis Darwis; Risha Utami; Bahdin Ahad Badia; Fachrizal Cesar Putra
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 12, No 1 (2026): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v12i1.15217

Abstract

Low-rise buildings, broadly defined as structures of one to four storeys, represent the dominant residential and small commercial building typology in many countries, particularly across Southeast Asia, Sub-Saharan Africa, Latin America, and parts of the Middle East. Their demolition—whether for urban regeneration, post-disaster clearance, or individual redevelopment—spans a wide spectrum of approaches, from entirely manual hand-tool operations to fully mechanised excavator-based processes. This systematic review comprehensively examines the principal manual and equipment-based demolition techniques applicable to low-rise buildings, analysing each in terms of technical characteristics, operational requirements, safety implications, material recovery potential, and economic performance. The factors governing method selection—including structural typology, site access constraints, proximity to adjacent structures, project budget, and the presence of hazardous materials—are also critically examined. Two structured summary tables are presented: a comparative performance overview and a multi-criteria decision matrix to guide method selection in practice. The review concludes that no single demolition technique is universally optimal; the most appropriate approach is determined by a combination of site-specific, technical, economic, and regulatory factors. Key knowledge gaps are identified, with particular emphasis on developing-country contexts where low-rise demolition is most prevalent yet least formally regulated. Low-rise buildings, broadly defined as structures of one to four storeys, represent the dominant residential and small commercial building typology in many countries, particularly across Southeast Asia, Sub-Saharan Africa, Latin America, and parts of the Middle East. Their demolition—whether for urban regeneration, post-disaster clearance, or individual redevelopment—spans a wide spectrum of approaches, from entirely manual hand-tool operations to fully mechanised excavator-based processes. This systematic review comprehensively examines the principal manual and equipment-based demolition techniques applicable to low-rise buildings, analysing each in terms of technical characteristics, operational requirements, safety implications, material recovery potential, and economic performance. The factors governing method selection—including structural typology, site access constraints, proximity to adjacent structures, project budget, and the presence of hazardous materials—are also critically examined. Two structured summary tables are presented: a comparative performance overview and a multi-criteria decision matrix to guide method selection in practice. The review concludes that no single demolition technique is universally optimal; the most appropriate approach is determined by a combination of site-specific, technical, economic, and regulatory factors. Key knowledge gaps are identified, with particular emphasis on developing-country contexts where low-rise demolition is most prevalent yet least formally regulated.
DARI LISAN KE DIGITAL: PEMBERDAYAAN LABORATORIUM TEKNIK MESIN MELALUI PANDUAN OPERASIONAL BERBASIS QUICK RESPONSE CODES (QR CODES) DI UNIVERSITAS HALU OLEO Muhammad Idris Putra; Budiman Sudia; Prinob Aksar; Bahdin Ahad Badia; La Rahman; Muhammad Irwan Syahib; Citra Yurnidar Syah; Anita Yuliana
Jurnal Pengabdian Masyarakat Sabangka Vol 5 No 03 (2026): Jurnal Pengabdian Masyarakat Sabangka
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/sabangka.v5i03.2602

Abstract

Optimizing laboratory management is support safe and effective learning activities. In the Design and Machining Process Laboratory, Faculty of Engineering, equipment operation has largely depended on verbal instructions from laboratory staff, increasing the potential for operational errors & workplace accidents. This commu nity service program aimed to develop digital equipment operating manuals integrated QR Codes to improve users' independence in laboratory activities. A participatory approach was employed through needs assessment, equipment inventory, manual develop ent based on technical references and occupational health and safety standards, integration into QR Code-linked digital flip books, dissem ination, and evaluation. The results demonstrate that the digital manuals can be accessed instantly by scanning QR Codes attached to each piece of equipment, enabling students to obtain operational guidance independently. This innovation enhances the effectiveness of laboratory practice, minimizes equipment misuse, and promotes a stronger occupational safety culture, making it a practical and sustainable model for laboratory management in higher education
Effect of blade number on the performance of an H-rotor vertical axis wind turbine under low wind speed conditions Agustinus Lolok; Lukas Kano Mangalla; Bahdin Ahad Badia
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8832

Abstract

Vertical Axis Wind Turbines (VAWTs) have significant potential for small-scale wind energy applications, particularly in regions with low to moderate wind speeds. One of the key design parameters influencing VAWT performance is the number of blades. This study aims to experimentally investigate the effect of blade number on the operational characteristics and aerodynamic efficiency of a laboratory-scale vertical axis wind turbine. Three turbine configurations with 2, 3, and 4 blades were tested, each with a blade height of 25 cm and installed at 45 cm above the ground. Experiments were conducted using an axial fan with a flow straightener in a laboratory setup under wind speeds of 2, 3, 4, and 5 m/s. Measured parameters included rotational speed (RPM), torque, mechanical power, Tip Speed Ratio (TSR), and power coefficient (Cp). The results indicate that the three-bladed turbine exhibits the best overall performance, achieving a maximum power coefficient of 0.37 at a wind speed of 5 m/s and a TSR of approximately 2.2. A relative efficiency analysis confirms that the three-bladed configuration offers the most favorable balance among torque generation, rotational speed, and aerodynamic losses. These findings offer valuable insights for optimizing small-scale VAWT design and enhancing wind energy utilization in low-wind-speed environments.
Analisis Dampak Kesalahan Penyetelan Screw Adjusting terhadap Kinerja Kelistrikan Horn Kendaraan Yuliadi Erdani; Ahmad Fahrurozi; Muhammad Giri Suhada; Cecep Taufiq Hidayatullah; Mochammad Naufal; Bahdin Ahad Badia
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 2 (2025): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i2.13774

Abstract

Sistem horn kendaraan merupakan salah satu komponen vital dalam sistem peringatan suara yang berfungsi memberikan sinyal peringatan kepada pengguna jalan lain. Kinerja sistem ini sangat bergantung pada integritas rangkaian kelistrikan dan keakuratan komponen mekanis yang saling terhubung. Penelitian ini bertujuan untuk menganalisis penyebab utama kegagalan fungsi horn kendaraan akibat kesalahan penyetelan sekrup penyelaras (screw adjusting) pada titik kontak. Kasus yang diamati menunjukkan bahwa horn tidak dapat berfungsi karena tidak terjadi hubungan konduktif antara dua titik kontak utama dalam rangkaian akibat posisi sekrup yang terlalu dalam. Metode yang digunakan meliputi inspeksi visual komponen, pengukuran tegangan pada terminal input dan output horn, serta simulasi getaran untuk mengamati perilaku koneksi saat terjadi getaran kendaraan. Hasil penelitian memperlihatkan bahwa titik kontak B yang memiliki sifat pegas tidak mampu mencapai titik kontak A secara permanen, sehingga arus listrik terputus dan horn gagal beroperasi. Horn hanya menyala sesaat ketika getaran menyebabkan kontak sementara antara kedua titik. Setelah dilakukan penyesuaian ulang posisi screw, kontinuitas arus listrik kembali stabil dan horn berfungsi normal. Temuan ini menegaskan pentingnya kalibrasi yang tepat pada sistem mekanik-elektrik horn serta memberikan dasar untuk pengembangan strategi perawatan preventif pada sistem kelistrikan kendaraan agar keandalan dan keselamatan pengendara dapat ditingkatkan.
Optimasi Parameter Pembubutan Baja AISI 1045 Menggunakan Metode Taguchi Angga Asteriasti Aji; Bahdin Ahad Badia; Muhammad Idris Putra; Fachrizal Cesar Putra; Wahyu Puji Sahputra; Mardis Darwis; Raja Agung Hasudungan Simanjuntak
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 2 (2025): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i2.13719

Abstract

AbstrakIndustri manufaktur mengalami pertumbuhan pesat, sehingga produk yang dihasilkan, terutama melalui proses permesinan seperti pembubutan, harus memiliki kualitas yang tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh parameter pembubutan, seperti feed dan putaran spindle, terhadap kekasaran permukaan dan amplitudo getaran pada pembubutan baja AISI 1045 menggunakan pahat karbida. Pengukuran kekasaran permukaan dilakukan dengan Microscope OLS4100, sementara amplitudo getaran diukur menggunakan VibXpert II. Data yang diperoleh dianalisis dengan menggunakan Minitab Statistical Software 22. Hasil analisis menunjukkan bahwa feed memiliki pengaruh paling signifikan terhadap kekasaran permukaan dan amplitudo getaran. Parameter pembubutan yang paling optimal untuk menghasilkan kekasaran permukaan terbaik adalah feed 0,1 mm/put (lvl 1) dan kecepatan spindle 400 rpm (lvl 4), dengan nilai kekasaran permukaan sebesar 4,757 μm. Sementara itu, parameter yang paling optimal untuk mengurangi amplitudo getaran adalah feed 0,1 mm/put (lvl 1) dan kecepatan spindle 100 rpm (lvl 1), dengan nilai amplitudo getaran sebesar 0,11 m/s.
RANCANG BANGUN BELT KONVEYOR ROTARY UNTUK PENGAYAKAN PASIR Abd. Kadir; Bahdin Ahad Badia
Jurnal Multidisipliner Kapalamada Vol. 4 No. 04 (2025): JURNAL MULTIDISIPLINER KAPALAMADA
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/kapalamada.v4i04.2197

Abstract

This study aims to design and develop a rotary belt conveyor as a sand screening machine to improve the effectiveness of the screening process. The research method includes mechanical system design, frame analysis covering stress, strain, displacement, and safety factor, as well as simulation using Autodesk Inventor 2020. In addition, calculations of conveying capacity, material cross-sectional area, and sand screening rate per hour were performed. The frame simulation results under a load of 4,165 N using aluminum 6061 material show a maximum stress of 71.126 MPa (manual calculation) and 52.16 MPa (simulation), strain values of 0.001032 and 0.000635, maximum displacement of 0.4068 mm and 0.1912 mm, and safety factors of 3.8 and 5.2, respectively, indicating that the frame design is structurally safe. The designed rotary belt conveyor is capable of conveying and screening sand with a capacity of up to 5.7 tons/hour using a 2 HP electric motor. These results indicate that the developed rotary belt conveyor can serve as an effective mechanical solution for sand screening processes.
Rancang Alat Pembelah Rotan Sebagai Material Alternatif Yang Ramah Lingkungan Abd Kadir; Prinob Aksar; Bahdin Ahad Badia; Salimin Salimin; Citra Yurnidar Syah
Jurnal Multidisipliner Bharasumba Vol 5 No 03 (2026): BHARASUMBA: Jurnal Multidisipliner
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v5i03.2673

Abstract

Rattan is an environmentally friendly alternative material with significant potential for the handicraft industry, particularly in Southeast Sulawesi. However, the rattan splitting process is still predominantly performed manually, resulting in low efficiency, long processing time, and increased occupational safety risks. Therefore, this study aims to design and evaluate the performance of a semi-automatic rattan splitting machine that is efficient, ergonomic, and environmentally sustainable. The research methodology includes the stages of design, manufacturing, assembly, and performance testing . Performance tests were carried out by comparing the splitting time between manual methods and the proposed machine, using rattan diameters ranging from 10 mm to 20 mm. The results indicate that the designed rattan splitting machine significantly improves processing efficiency and production capacity, produces more uniform split results, and reduces material waste. In addition, the machine demonstrates efficient fuel consumption, making it suitable for small- to medium-scale handicraft industries, the proposed machine provides a practical solution to enhance productivity, economic efficiency & environmental sustainability in rattan processing industries
Co-Authors Abd Kadir Abd. Kadir Agustinus Lolok Ahmad Fahrurozi Angga Asteriasti Aji Anita Yuliana Budiman Sudia, Budiman Cecep Taufiq Hidayatullah Citra Yurnidar Syah Fachrizal Cesar Putra Jalaluddin Jumhur La Rahman Lukas Kano Mangalla Mardis Darwis Mochammad Naufal Muhammad Giri Suhada Muhammad Idris Putra Muhammad Irwan Syahib Prinob Aksar Raja Agung Hasudungan Simanjuntak Risha Utami Salimin Salimin Wahyu Puji Sahputra Yuliadi Erdani