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All Journal Journal of Mechanical Engineering Education (Jurnal Pendidikan Teknik Mesin) Operations Research: International Conference Series Jurnal Otoranpur International Journal of Quantitative Research and Modeling Teknika STTKD: : Jurnal Teknik, Elektronik, Engine International Journal of Ethno-Sciences and Education Research
Pradika Noviandani
Politeknik Manufaktur Bandung, Bandung, Indonesia
Religion Humanities Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation Other

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ANALISIS HASIL KERJA PADA UJI KOMPETENSI PRAKTIK KEJURUAN TEKNIK PEMESINAN SISWA SMK Noviandani, Pradika; Purnawan, Purnawan; Wardaya, Wardaya
Journal of Mechanical Engineering Education Vol 1, No 2 (2014): Desember
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jmee.v1i2.3819

Abstract

Tujuan penelitian ini, adalah untuk mengetahui gambaran hasil kerja pada pelaksanaan uji kompetensi praktik kejuruan teknik pemesinan di SMK Negeri 6 Bandung. Metode yang digunakan adalah metode deskritif. Data dijaring melalui studi observasi secara langung pada pelaksanaan uji kompetensi praktik kejuruan teknik pemesinan untuk pekerjaan membubut. Jenis proses terdiri atas membubut diameter, membubut panjang, mengebor diameter, membubut alur, membubut ulir, membubut tirus dan mengebor kedalaman. Hasil kerja uji kompetensi praktek diukur menggunakan jangka sorong analog dengan ketelitian 0.05 mm untuk mengetahui dimensi produk hasil kerja. Subjek penelitian sebanyak 30 siswa. Rata-rata nilai produk hasil kerja dalam proses pembubutan adalah 16. Distribusi penilaian untuk aspek hasil kerja berdasarkan kriteria yang dibuat adalah 13.33%, 40%, 40%, 6,67% untuk masing-masing kategori A,B,C dan E.
Performance Analysis of Industrial Ventilation Systems: A Case Study of Exhaust Fan and Roof Cooling Fan Installations in a Textile Manufacturing Area noviandani, pradika; Latipah, Yeni; Sari, Marta Hayu Raras Sita Rukmika; Suryaman
Operations Research: International Conference Series Vol. 6 No. 4 (2025): Operations Research International Conference Series (ORICS), December 2025
Publisher : Indonesian Operations Research Association (IORA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/orics.v6i4.438

Abstract

This study presents a performance analysis of industrial ventilation systems using exhaust fans and roof cooling fans in a textile manufacturing environment. The research was conducted as a case study in the Preparation and Processing areas of a textile factory located in Cimahi, West Java, Indonesia, under actual operating conditions. Air temperature and relative humidity (RH) were measured and compared with recommended textile industry standards (20–30°C and RH 55–75%). Two mechanical ventilation alternatives were evaluated: an exhaust fan system (1.46 × 1.46 m) and a roof cooling fan system (1.82 × 1.45 m). The results show that areas equipped with exhaust fans exhibited lower indoor temperatures by approximately 2–3°C and more stable RH levels (50–52%) compared to areas without mechanical ventilation, where temperatures reached up to 42°C and RH dropped to 25–30%. Both systems required 0.75 kW per unit, with monthly operating costs ranging from IDR 7–10 million. Volumetric efficiency analysis indicates that exhaust fans achieved 60,000 m³/kWh, while roof cooling fans produced 46,667 m³/kWh, indicating a 28% difference in airflow efficiency. These findings provide empirical evidence on the thermal and energy performance characteristics of industrial ventilation systems in textile production areas.
ANALISIS UMUR PAKAI (LIFETIME) BEARING 6207 KNCG PADA KOMPONEN TAKE OFF ROLL MESIN TEXTURIZING MURATA 33-H DI PT. XYZ Noviandani, Pradika; Thomas, Fendy; Zakaria, Kiki; Hadiaty Yuningsih, Siti
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 11 No 2 (2025): TEKNIKA STTKD: JURNAL TEKNIK, ELEKTRONIK, ENGINE
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56521/teknika.v11i2.1477

Abstract

The textile industry plays an important role in the national economy, especially in absorbing labor and contributing to foreign exchange through export activities. One of the crucial processes in the textile production chain is yarn texturization, which greatly determines the physical and aesthetic characteristics of the yarn as the final product. PT. XYZ is a textile company that produces polyester-based textured yarn using a Murata 33-H type texturizing machine. This machine operates continuously at high speed and is highly dependent on the reliability of its mechanical components, one of which is the 6207 KNCG type bearing installed on the Take Off Roll section. Bearings function to support rotating shafts with high loads and speeds, so they are very susceptible to wear. Bearing failure can cause production downtime, damage to other components, and decreased product quality. Therefore, a predictive approach is needed in maintenance by analyzing the bearing lifetime theoretically. This study aims to calculate the estimated bearing lifetime and prepare a replacement schedule and appropriate preventive inspection to support smooth operations. The analysis results show that the theoretical lifetime of the 6207 KNCG bearing reaches 4.354,1 hours or around 181.6 operational days. Considering the safety factor, a replacement schedule of every 3.487,2 hours is recommended. In addition, routine inspections are carried out periodically to detect early signs of damage. This strategy is expected to improve machine reliability, maintenance cost efficiency, and production continuity at PT. XYZ.
Development of Kaplan Fixed Pitch Microhydro Turbine as a Renewable Energy Source at the TNI AD Border Post Koko Hadi Santoso; Pradika Noviandani; Suryaman
International Journal of Quantitative Research and Modeling Vol. 7 No. 1 (2026): International Journal of Quantitative Research and Modeling
Publisher : Research Collaboration Community (RCC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijqrm.v7i1.1253

Abstract

Micro hydropower plants offer a promising renewable energy solution for remote areas lacking access to electricity, particularly military border posts. This study aims to design and develop a fixed pitch Kaplan turbine for low head micro hydro applications. The turbine operates under a head of 1.8 m and a discharge of 0.006 m³/s. The research methodology includes theoretical calculations, numerical simulations using Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA), and experimental prototype testing. Key design parameters include runner diameter, blade configuration, shaft design, and transmission system. Simulation results show stable flow distribution and safe structural stress levels. Experimental results indicate a power output of 74.9 W with an efficiency of 70.7%. These findings demonstrate that the proposed turbine is suitable for low-head applications and can serve as an alternative energy source for remote military installations.
ANALISIS SIMULASI PERFORMA STRUKTURAL TRACKPAD TANK SCORPION BERBASIS MATERIAL NR–EPDM/N330 MENGGUNAKAN FINITE ELEMENT ANALYSIS (FEA): Otoranpur Akhmad Zailani Riski Siregar; Farid Hendro Wibowo; Pradika Noviandani
Jurnal Otoranpur Vol. 7 No. 1 (2026): Jurnal Otoranpur
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54317/oto.v7i1.904

Abstract

Abstract: Trackpad merupakan komponen kritis pada kendaraan tempur beroda rantai yang berfungsi meredam getaran, meningkatkan traksi, dan melindungi permukaan lintasan. Penelitian sebelumnya menggunakan campuran NR–SBR masih menunjukkan kelemahan signifikan, seperti rendahnya ketahanan ozon dan abrasi, serta tidak optimal untuk iklim tropis Indonesia. Penelitian ini menganalisis performa struktural trackpad Tank Scorpion menggunakan material komposit NR–EPDM diperkuat Carbon Black N330 melalui simulasi Finite Element Analysis (FEA) berbasis model hiperelastik Ogden orde-2. Simulasi statik dan dinamik (Transient Structural) dilakukan pada lima variasi komposisi (A–E) dengan parameter keluaran meliputi total deformation, equivalent stress, equivalent strain, contact pressure, dan safety factor. Hasil simulasi menunjukkan bahwa NR–EPDM mampu menurunkan deformasi rata-rata sebesar 37,83%, tegangan internal 8,83%, regangan elastis 61,44%, dan tekanan kontak 11,09% dibandingkan NR–SBR. Meskipun nilai safety factor dinamis NR–EPDM sedikit lebih rendah (rata-rata 1,45 vs 1,64), seluruh variasi tetap memenuhi kriteria keamanan struktural (SF > 1,0). Inovasi ini membuktikan bahwa formulasi NR–EPDM/N330 dengan pemodelan hiperelastik terkalibrasi memberikan respons struktural yang lebih stabil, tahan deformasi, dan layak diaplikasikan pada sistem penggerak rantai kendaraan tempur ringan TNI AD. Keywords: trackpad, Tank Scorpion, NR–EPDM, carbon black N330, finite element analysis, hyperelastic model, structural performance
A Comparative Policy Analysis of Education Systems and TVET Teacher Competencies in Indonesia and Malaysia Fendy Thomas; Pradika Noviandani; Anis Munawwiroh; Muhammad Iqbal Al-Banna Ismail
International Journal of Ethno-Sciences and Education Research Vol. 6 No. 1 (2026): International Journal of Ethno-Sciences and Education Research (IJEER)
Publisher : Research Collaboration Community (Rescollacom)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijeer.v6i1.1182

Abstract

Educational systems and the competence of Technical and Vocational Education and Training (TVET) teachers play a crucial role in shaping the quality of human resources and national competitiveness. This study aims to comparatively analyze the education systems and TVET teacher competencies in Indonesia and Malaysia, two neighboring countries with similar cultural backgrounds but different educational governance and policy orientations. The study adopts a qualitative descriptive approach based on document analysis of laws, regulations, policy reports, and relevant literature related to national education systems and TVET teacher development in both countries. The findings indicate that Indonesia and Malaysia differ significantly in terms of educational structure, governance, funding mechanisms, and curriculum implementation, particularly at the secondary and vocational education levels. Malaysia demonstrates a more centralized and systematically evaluated education policy framework, supported by higher public investment in education. In contrast, Indonesia faces challenges related to educational quality, equity, and consistency in policy implementation. At the TVET level, both countries encounter similar issues, especially regarding teacher quality, uneven distribution of vocational teachers, and limited industry experience among educators. In Indonesia, the Professional Teacher Education Program (PPG) is expected to address shortages and improve the quality of vocational teachers. Meanwhile, Malaysia emphasizes the Modern Apprenticeship or dual system to enhance teachers’ industry exposure and practical competence. Despite differences in terminology, both countries recognize four essential domains of TVET teacher competence: pedagogical, professional, personal, and social or communication competence. The study concludes that strengthening industry collaboration and continuous professional development is essential to improving TVET teacher competence and aligning vocational education outcomes with labor market needs.
Co-Authors Akhmad Zailani Riski Siregar anis munawwiroh Farid Hendro Wibowo Fendy Thomas Hadiaty Yuningsih, Siti Koko Hadi Santoso Latipah, Yeni M. Yogi Riyantama Isjoni Muhammad Iqbal Al-Banna Ismail Purnawan Purnawan Rahmawati, Sinta Sari, Marta Hayu Raras Sita Rukmika Suryaman Thomas, Fendy Wardaya Wardaya Zakaria, Kiki