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Indonesian Journal of Computing, Engineering and Design (IJoCED) Faculty of Engineering and Technology - Sampoerna University L’Avenue Office Tower, North Tower 6th Floor, Jl. Raya Pasar Minggu Kav. 16, Jakarta Selatan 12780, Indonesia
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INDONESIA
Indonesian Journal of Computing, Engineering, and Design
Published by Universitas Sampoerna
ISSN : 26561972     EISSN : 26568179     DOI : https://doi.org/10.35806/ijoced.v1i1.31
Core Subject : Science, Art, Engineering,
Arts Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Indonesian Journal of Computing, Engineering and Design (IJoCED) is an international and open access peer-reviewed journal, published by Faculty of Engineering and Technology, Sampoerna University. IJoCED published original research papers, state of the art reviews and innovative projects on topics leveraging all aspects of Computing, Engineering & Design and their cross-disciplinary applications: from theory to practice. Thus, manuscripts that cover any related issues are encouraged to be submitted to IJoCED. The IJoCED is committed to providing access to quality research article in the area of Computing, Engineering & Design and the cross-disciplinary among areas for all interested readers. The IJoCED will be published two times a year in April and October. The below mentioned fields are the scope and focus for IJoCED. The IJoCED also welcomes innovative articles related any Computing, Engineering and Design fields. Computing: • Smart Embedded Computing • Data Science/ Analytics • Educational computing • Intelligent Systems & Robotics • IT and Social Change • Internet of Things • Business Information Systems • Health Information Systems • Software Engineering • Computer System & Networking • E-Commerce & E-Business • Green Computing • IS Project Management • Smart Technology • Data Analytics for Big Data • Intelligent System for Organizations • Information Security Engineering: • Bioprocess Engineering • Civil Engineering • Energy Engineering • Environmental Engineering • Geotechnical Engineering • Genetic Engineering • Industrial Engineering • Bioprocess Engineering • Industrial Engineering • Social Engineering • Physics Engineering • Chemical Engineering • Electrical Engineering • Computer Engineering • Food Engineering • Geotechnical Engineering • Chemical Engineering • Manufacturing Engineering • Materials Engineering • Engineering Education Design: • Visual Communication Design • Photography • Visual Literacy • Communication Technologies • Human-Computer Interaction • User-based Design • Digital Art • Graphics, Art, and Design • Advertising Design • Theory of Perception • User Experience
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol. 6 No. 2 (2024): IJoCED" : 6 Documents clear
Comparison of Heat Transfer Performance of Lattice-Structured Heat Sinks Christo, Jerome
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/djhqed26

Abstract

This paper presents a comparative study of the heat transfer performance of lattice-structured heat sinks. Twenty different unit cells are chosen, and heat sinks are modeled in nTop with constant unit cell size. Al 6061 alloy is chosen as the material for analysis due to its good thermal conductivity, low weight, low cost, and high strength. Steady-state thermal analysis is performed using ANSYS with constant input parameters for all samples. Heat flux and temperature distribution within the heat sinks are analyzed. From the simulation, it was found that TPMS and plate-based heat sinks outperform other types with better heat transfer.
The Potential of Tea Waste and Silica Fume as Partial Replacements for Cement in Bricks Lim, Yong Tat; Ting, Michelle Sze Hui; Bujang, Ummi Humaira Binti; Bujang, Mastura Binti; Ling, Jen Hua
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/39gwjx93

Abstract

Bricks are widely used building materials made from sand, cement, and water in standard proportions. However, the increasing demand for construction materials that use sand and ordinary Portland cement is leading to the depletion of natural resources. To address this issue, researchers are exploring alternative materials, such as Tea Waste (TW) and Silica Fume (SF), as partial replacements for cement bricks. This study used a mix proportion of 1:2.5 with a certain percentage of replacement materials and 0.5 of a water/cement ratio. The experimental results indicated that when TW and SF were substituted at 5% and 10%, respectively, the compressive strength of the cement bricks was adequate and met the minimum masonry unit requirements of the British Standard. Additionally, the density of the cement bricks (with TW and SF) was lower than that of solid bricks, and the water absorption met the requirements of the British Standard. However, the cement bricks' effective strength-to-weight ratio (s-w ratio) was lower than 1.0, except for the specimens with 5% TW and 10% SF. The optimum mix proportion was the cement brick with 5% TW and 10% SF as it achieved all the industry requirements. 
Microhole Creation in FDM-Printed Sheet Polymers: A Punching Process Approach Agus Salim, Urip; Abdullah, Bulan; Suyitno; Pratama, Juan; Badranaya, Muhammad Imawan; Wijaya, Rahman; Mahardika, Muslim; Arifviyanto, Budi
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/8r45gs31

Abstract

Fused deposition modeling (FDM) 3D printing is one of the additive manufacturing processes that can make components with complex shapes, require no tools, are cheap, safe, and have  minimal waste. Despite all the advantages of the FDM process, the inability of this technique to create holes on a micro scale can be a problem and limits its application. In this research, a combination of FDM and machining processes was carried out, where micro holes in FDM printed components were created using a punching process. The punching process is carried out by varying pressure and speed. Furthermore, the diameter of the hole and the quality of the sheared edge of the hole resulting from the punching process were evaluated through observation using an optical microscope. The results show that the holes resulting from the punching process have a better shape and diameter than the FDM process. Then, the analysis of the sheared edge from punching shows that pressure and speed significantly affect the surface quality of the resulting sheared edge, where the quality increases with increasing pressure and speed. In the end, the punching process was proven to create micro-scale holes in FDM-printed polymer, especially at minimum thickness. 
Systematic Layout Planning and Analytical Hierarchy Process for Laboratory Layout Optimization: A Case Study of DESPRIN Sihotang, Mergie; Jawak, Josua Boyke William
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/v6i2.466

Abstract

The Product Design and Innovation Laboratory (DESPRIN) at Del Institute of Technology plays a crucial role in supporting innovation. Yet, its current layout struggles to meet its users' diverse and evolving needs. This study addresses the problem of inadequate spatial configuration, which hampers workflow efficiency, ergonomics, and the lab's overall capacity to accommodate various activities. To resolve this issue, a flexible layout is designed using the Systematic Layout Planning (SLP) method, emphasizing optimizing space utilization, workflow, and spatial adaptability. Data collected from literature reviews, interviews, statistical analyses, and anthropometric measurements inform the design process to enhance the lab’s quality and spatial efficiency. The Analytical Hierarchy Process (AHP) is employed to prioritize key layout design factors, identifying capacity as the most critical element (0.4930), followed by facilities (0.1688), accessibility (0.1414), security (0.1270), and environment (0.0708). The study results in 13 new layout configurations that can accommodate various activities within DESPRIN, providing a more dynamic and responsive user environment.
Fire Safety Assessment of a Typical Sports Hall Building Based on Fire Dynamics and Crowd Movement Models Thareq, Achmad Efrizal; Purnomo, Dwi Marhaendro Jati; Auzani, Ahmad Syihan; Nugroho, Yulianto Sulistyo; Santoso, Muhammad Agung
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v6i2.458

Abstract

Fire risk analysis is one of the essential components of building design to ensure the safety of occupants and properties in case of fires. Currently, the Ministry of Public Works and Housing Regulation No. 20/PRT/M/2009 provides guidelines for conducting a fire risk analysis, however, without a clear consideration of fire dynamics in the estimation of the fire risk level. In this work, we investigate the fire safety aspects of a typical sports hall buildings by a fire dynamics deterministic model (Fire Dynamics Simulator (FDS) of the National Institute of Science and Technology, USA) and crowd movement model for occupant evacuation (Pathfinder of Thunderhead Engineering). Systematic investigations were made on the effects of the fire growth category and smoke extraction system on the Available Safe Egress Time (ASET). The results of ASET were then compared to the Required Safe Egress Time (RSET) which is obtained from the evacuation model. Our results suggest that ASET decreases exponentially with fire growth rate, especially from slow to medium growth rate. The fire growth rate significantly affects the acceptable fire risk of ASET longer than RSET. Occupant capacity, fire management systems, and smoke extraction systems play important roles in reducing fire risk. However, as the fire growth rate increases, the effects of smoke extraction in maintaining safe conditions diminish. This study provides recommendations to reduce risks to the occupants in case of fire, contributing to the considerations of the design and management of a typical sports hall building.
Heat Transfer Analysis and Friction Factor of Ternary Nanofluids with Twisted Tape Inserts Ramadhan, Anwar Ilmar; Azmi, Wan Hamzah; Lasman, As Natio; Umar, Efrizon; Sharma, Korada Viswanatha
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v6i2.473

Abstract

This study investigates the heat transfer efficiency and friction factor of ternary nanofluids (Al₂O₃-TiO₂-SiO₂) in a simple tube equipped with a twisted tape. Ternary nanofluids, prepared using a volume-based composition ratio of 20:16:64, were tested at various volume concentrations ranging from 0.5% to 3.0%. Forced convection heat transfer experiments were conducted under varying Reynolds numbers (2,300 to 12,000) and a bulk temperature of 70 °C. The results indicate that the maximum viscosity occurs at a volume concentration of 3.0%. The highest increase in heat transfer for ternary nanofluids in a simple tube with twisted tape (H/D = 2.0) was achieved at a volume concentration of 3.0%, reaching 225.35%. Compared to a plain tube, the average thermal performance factor (TPF) of the twisted tape was significantly improved, with a further increase observed when the volume concentration rose from 2.73% to 3.22%.    

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