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Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi
Published by Universitas Teuku Umar
ISSN : 24775029     EISSN : 25020498     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Mekanova merupakan kumpulan karya ilmiah para akademisi, peneliti dan praktisi yang bertujuan menyatukan pengalaman-pengalaman, ide-ide dan hasil penelitian terutama dalam bidang“Mekanikal, Inovasi dan Teknologi”.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 14 Documents
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Search results for , issue "Vol 12, No 1 (2026): April" : 14 Documents clear
ANALISIS PERBANDINGAN GEOMETRI SUDUT POTONG 450, 550, 600 PADA PROSES PEMBUBUTAN MENGGUNAKAN MATERIAL ST60 Ratlalan, Roberth Marshall; Syaiful, Syaiful; Valentine, Odilia
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.v12i1.15001

Abstract

AbstrakProses pembubutan merupakan salah satu proses pemesinan yang berperan penting dalam industri manufaktur untuk menghasilkan komponen dengan tingkat presisi dan kualitas permukaan yang baik. Kualitas permukaan hasil pembubutan dipengaruhi oleh berbagai faktor salah satunya adalah geometri sudut potong pahat. Penelitian ini bertujuan untuk menganalisis pengaruh variasi geometri sudut potong 45°, 55°, dan 60° terhadap tingkat kekasaran permukaan pada material ST60. Metode yang digunakan adalah eksperimen kuantitatif dengan pendekatan komparatif di mana proses pembubutan dilakukan menggunakan mesin bubut dan pengujian kekasaran permukaan dilakukan menggunakan surface roughness tester. Spesimen berbentuk silindris dengan panjang 50 mm dan diameter 25 mm. Hasil penelitian menunjukkan bahwa variasi sudut potong memberikan pengaruh signifikan terhadap kualitas permukaan. Sudut potong 60° menghasilkan nilai kekasaran terendah dengan Ra sebesar 2,464 µm, Rq sebesar 3,073 µm, dan Rz sebesar 14,784 µm sehingga menghasilkan permukaan paling halus. Sudut 45° menghasilkan kekasaran sedang dan sudut 55° menghasilkan kekasaran tertinggi. Perbedaan ini dipengaruhi oleh mekanisme pembentukan geram, gaya potong, dan kestabilan proses pemesinan. Dengan demikian sudut potong 60° merupakan sudut optimum untuk menghasilkan kualitas permukaan terbaik pada proses pembubutan material ST60. Kata Kunci - Pembubutan, Geometri Sudut Potong, Kekasaran Permukaan, Material ST60. AbstractTurning is one of the machining processes that plays an important role in the manufacturing industry to produce components with a high level of precision and good surface quality. The surface quality of the turning results is influenced by various factors, one of which is the geometry of the cutting angle of the tool. This study aims to analyze the effect of variations in the geometry of the cutting angle of 45°, 55°, and 60° on the surface roughness level of ST60 material. The method used is a quantitative experiment with a comparative approach where the turning process is carried out using a lathe and surface roughness testing is carried out using a surface roughness tester. The specimen is cylindrical with a length of 50 mm and a diameter of 25 mm. The results show that variations in the cutting angle have a significant effect on surface quality. The cutting angle of 60° produces the lowest roughness value with Ra of 2.464 µm, Rq of 3.073 µm, and Rz of 14.784 µm, thus producing the smoothest surface. The 45° angle produces medium roughness and the 55° angle produces the highest roughness. This difference is influenced by the chip formation mechanism, cutting forces, and machining stability. Therefore, a 60° cutting angle is the optimum angle for producing the best surface quality in the turning process of ST60 material.Send feedback. Keywords - Turning, Cutting Angle Geometry, Surface Roughness, ST60 Material.
A SYSTEMATIC REVIEW OF MANUAL AND EQUIPMENT-BASED DEMOLITION TECHNIQUES FOR LOW-RISE BUILDINGS: TECHNICAL PERFORMANCE, SAFETY IMPLICATIONS, AND METHOD SELECTION CRITERIA Simanjuntak, Raja Agung Hasudungan; Darwis, Mardis; Utami, Risha; Badia, Bahdin Ahad; Putra, Fachrizal Cesar
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.
Model EIA terintegrasi untuk penilaian dampak lingkungan PLTS Rooftop perumahan di Kota Medan Naibaho, Ronald; Nasution, Andi S.; Pasaribu, Parlindungan
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.v12i1.15194

Abstract

This research aims to develop an environmental impact assessment model for rooftop solar power plants (PLTS rooftop) in residential areas of Medan City, using a structured and contextual Environmental Impact Assessment (EIA) approach. The model is designed to integrate biophysical, socio-environmental, and technical-safety aspects, making it a practical evaluation tool for local stakeholders. The research method used is descriptive-quantitative with three main stages: identification of impact aspects and indicators, development of a scoring and weighting matrix based on expert judgment, and application of the model to 30 simulated houses with the potential to install rooftop PLTS. Each housing unit was assessed based on the formulated indicators, then the total impact value was calculated and classified into low, medium, and high categories. The novelty of the research lies in the development of an EIA model specifically for residential-scale rooftop PLTS in Medan City, incorporating indicators such as roof temperature, water runoff, glare, building structure, social acceptance, inter-neighbor conflict, and the risks of cables, fire, and panel waste within a single integrated assessment framework. The research results show that the biophysical aspect has the highest average score (3.17), followed by the technical-safety aspect (2.95) and the socio-environmental aspect (2.77), with an average total value of 2.96 and the majority of houses falling into the medium impact category. These findings indicate that rooftop PLTS is relatively feasible for implementation in Medan's residential areas, provided there is adequate technical mitigation and social aspect management, and confirm that the developed EIA model is effective as an environmental impact assessment instrument at the micro-settlement level.
Rancang Bangun Mesin CNC Drilling Grafir Berbasis Arduino Mega 2560 Bakhtiar, Bakhtiar; Salahuddin, Salahuddin; Zamzami, Zamzami; Syahyadi, Rizal; Zulfadli, Teuku
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.v12i1.15055

Abstract

Kemajuan teknologi manufaktur pada era Industri 4.0 telah meningkatkan kebutuhan akan sistem produksi yang mampu memberikan tingkat ketelitian tinggi, fleksibilitas operasional, serta kinerja yang terotomasi. Mesin Computer Numerical Control (CNC) menjadi solusi utama dalam memenuhi kebutuhan industri tersebut karena kemampuannya menghasilkan produk yang konsisten dan presisi. Namun demikian, tingginya biaya pengadaan dan perawatan mesin CNC komersial masih menjadi kendala utama bagi institusi pendidikan vokasi serta usaha mikro, kecil, dan menengah (UMKM). Untuk mengatasi permasalahan tersebut, penelitian ini bertujuan untuk merancang dan mengimplementasikan mesin CNC drilling dan grafir berbiaya rendah dengan sistem kendali berbasis Arduino Mega 2560. Mesin yang dikembangkan menggunakan motor stepper NEMA 23 untuk menggerakkan tiga sumbu gerak (X, Y, dan Z), yang dikombinasikan dengan sistem linear rail serta mekanisme ballscrew dan lead screw guna menghasilkan pergerakan linear yang halus dan presisi. Firmware GRBL diterapkan sebagai pengendali utama dalam menerjemahkan dan mengeksekusi perintah G-code yang dihasilkan dari perangkat lunak CAD/CAM. Spindle yang digunakan adalah spindle MT370 dengan daya ±370 W yang difungsikan untuk proses grafir dan cutting dan Penerapan machining allowance sebesar −0,05 mm pada perangkat lunak Aspire terbukti mampu mengurangi deviasi dimensi dan meningkatkan presisi hasil pemesinan. Pengujian eksperimental dilakukan pada beberapa jenis material, antara lain, akrilik dan aluminium, untuk mengevaluasi kinerja sistem. Hasil pengujian menunjukkan bahwa mesin CNC yang dikembangkan mampu beroperasi secara andal, menjaga kestabilan kendali gerak, serta mencapai tingkat akurasi yang memadai untuk proses drilling dan grafir. Oleh karena itu, dapat disimpulkan bahwa mesin CNC drilling dan grafir berbasis Arduino Mega2560 yang dirancang memiliki kinerja yang cukup baik untuk keperluan pendidikan dan penelitian, serta berpotensi dikembangkan lebih lanjut untuk peningkatan presisi dan otomasi sistem serta layak digunakan sebagai media pembelajaran pada pendidikan vokasi serta sebagai alat pendukung untuk manufaktur ringan dan kegiatan prototipe.

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