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All Journal Rekayasa Mesin Jurnal Rekayasa Mesin G-Tech : Jurnal Teknologi Terapan Journal of Engineering and Applied Technology Eksergi: Jurnal Teknik Energi
Sari, Nurlia Pramita
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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Journal : G-Tech : Jurnal Teknologi Terapan

 1 
Design and Manufacture of Speedometer Covers using the House of Quality (HOQ) Approach Faizal, Elka; Sari, Nurlia Pramita; Wicaksono, Hangga; Pranoto, Bayu; Supriyanto, Nicky Suwandhy Widhi; Subagiyo, Subagiyo
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7119

Abstract

This study aims to design and fabricate a speedometer cover for Yamaha Aerox and N-Max 155 motorcycles using 3D printing technology, guided by the House of Quality (HOQ) framework. The increasing consumer demand for motorcycle accessories motivated this research. A structured design process was implemented, beginning with a consumer needs analysis conducted through questionnaires and surveys to identify user expectations. These needs were systematically translated into technical requirements using the HOQ method. The design stage utilized 3D CAD modeling and 3D scanning to ensure accurate fitting to the speedometer unit, followed by prototyping using fused deposition modeling (FDM) 3D printing. The final prototype exhibited key consumer-desired attributes such as heat resistance, structural durability, and a secure fit. Results indicate that integrating the HOQ approach with digital fabrication methods effectively aligns product design with user expectations. This study demonstrates the potential for further development of customizable motorcycle accessories using a consumer-driven and technology-supported design process.
Improving the Hardness of 3D Printable ABS Filament Through Thermal and Cooling Process Control Sari, Nurlia Pramita; Faizin, Akhmad; Pranoto, Bayu; Muzaki, Mochamad; Maulana, Firza Nurdin
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.7838

Abstract

The properties of filament are widely recognized as critical factors influencing the performance of fused filament fabrication (FFF) in 3D printing. Acrylonitrile Butadiene Styrene (ABS) is frequently utilized in this process due to its high strength, durability, and availability. Nevertheless, the characteristics of the filament are highly dependent on processing parameters, particularly extrusion temperature and cooling method, which directly affect its mechanical behavior and dimensional stability. The objective of this study was to evaluate the effect of extrusion temperature and cooling medium on the hardness of ABS filaments produced using a single-screw plastic extruder. Experimental procedures were performed at three extrusion temperatures, namely 180 °C, 200 °C, and 220 °C, with cooling applied by water immersion and by air using a blower. The results demonstrated that air cooling produced superior hardness values and more consistent dimensional stability compared to water cooling. The optimum condition was observed at an extrusion temperature of 180 °C under air cooling, which resulted in the highest hardness values along the filament length (95.63HA  average). These findings suggest that careful optimization of extrusion parameters, particularly the selection of an appropriate cooling method, is essential to improve filament quality for additive manufacturing applications.
Co-Authors Akbarsyah D, Khelvindra Rizky Akhmad Faizin Ching, Yuan Su Faizal, Elka Fauzan Baananto Hardyanto, Noveri Dwi Hilmi Iman Firmansyah Kurniawan, Yuda Junaedi Maulana, Firza Nurdin Muhammad Fakhruddin Muzaki, Mochamad Nicky Suwandhy Widhi Supriyanto Pranoto, Bayu Pratama, Rico Wahyu R.N. Akhsanu Takwim, R.N. Akhsanu Rijekki, Nanda Fajar Siti Duratun Nasiqiati Rosady Sonief, Achmad As'ad Subagiyo Subagiyo Wicaksono, Hangga