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All Journal Greenation International Journal of Engineering Science
Isman, Taufik Nur
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Mechanical Engineering

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Design of Practical Tools for Achievement of ¾ PK Split AC Cooling System Laboratory Scale Dian Nusantara University Diamond, Anggananda; Komarudin; Prumanto, Denny; Isman, Taufik Nur; Luthfi, Ilham Syawwal
Greenation International Journal of Engineering Science Vol. 4 No. 1 (2026): (GIJES) Greenation International Journal of Engineering Science (March - May 20
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v4i1.817

Abstract

This design aims to design and build a laboratory-scale refrigeration test tool that can be used to test the performance of a cooling system under various operational conditions.The design process for this test equipment involves several stages, from requirements analysis and mechanical and electronic design to fabrication and testing. Some of the features implemented in this equipment include precise temperature control, a digital monitoring system, and the ability to test various types of refrigeration systems. The expected outcome of this test equipment is the ability to provide accurate data on refrigeration system performance, which can then be used to improve energy efficiency and cooling system performance in industrial applications.
Analysis of Material Thickness Effect on Die Clearance in Deep Drawing Process of Inner Body Components Komarudin; Siagian, Jacky Mianda; Isman, Taufik Nur; Prumanto, Denny; Pradana, Bintang Ady
Greenation International Journal of Engineering Science Vol. 4 No. 1 (2026): (GIJES) Greenation International Journal of Engineering Science (March - May 20
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v4i1.818

Abstract

This study investigates the effect of material thickness on die clearance in the deep drawing process of automotive inner body components. In sheet metal forming, improper parameter selection frequently leads to defects such as wrinkling, burr formation, and fracture, which reduce product quality and production efficiency. Despite extensive studies on stamping processes, the interaction between material thickness and optimal die clearance remains a critical issue in industrial applications. An experimental approach was conducted using a material thickness of 0.8 mm under controlled process conditions. Key parameters, including cutting force, stripping force, drawing force, springback, and material elongation, were measured and analyzed. The results indicate that the optimal die clearance lies within the range of −0.06 mm to +0.11 mm. At this condition, the cutting force reached 39,424 Kgf, while stripping and drawing forces were recorded at 1,971.2 Kgf and 5,708.8 Kgf/mm², respectively. The springback value was measured at 1.8 N/mm², and material elongation reached 3.67 mm. The findings demonstrate that die clearance must be carefully adjusted according to material thickness to ensure stable material flow and minimize defect formation. The novelty of this study lies in the experimental determination of a practical clearance range under actual production conditions. This research provides valuable insights for optimizing die design and improving manufacturing performance.
Co-Authors Diamond, Anggananda Komarudin Luthfi, Ilham Syawwal Pradana, Bintang Ady Prumanto, Denny Siagian, Jacky Mianda