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All Journal Jurnal Teknik Mesin Indonesia Interdisciplinary Social Studies Jurnal Polimesin Prosiding SNTTM
Ridho Irwansyah
Universitas Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Journal : prosiding snttm

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Development of a microfluidic paper based with portable system for glucose concentration colorimetric analysis Irwansyah, Ridho; Herdian, Muhammad Bintang; Whulanza, Yudan
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/2eqhby13

Abstract

Diabetes mellitus is a major health problem in Indonesia, with a prevalence of up to 20.4 million people in 2024 according to the International Diabetes Federation (IDF). Early detection of blood sugar is hampered by expensive and difficult-to-access diagnostic tools. Microfluidic paper-based analytical devices (μPADs) are a potential solution because they are inexpensive, portable, and environmentally friendly, in accordance with WHO ASSURED standards. This study aims to develop a μPAD integrated with a portable detection system for colorimetric quantification of glucose concentration using Glucose Oxidase–Peroxidase Aminoantipyrine (GOD-PAP) reagent, which produces a color change proportional to glucose concentration. Initial testing was conducted on phosphate-buffered saline (PBS) and D-glucose solutions as test materials in glucose concentration research. The test materials will be validated using spectrophotometry. Next, the test materials will be applied to μPAD for colorimetric observation using an RGB sensor on a portable device. The quantification results show that the red ratio at 10 minutes of the colorimetric method has excellent linearity (R² = 0.96). Precision validation of the colorimetric method produced an RSD value of less than 5%. The paired t-test produced a p-value of 0.42 with a 95% confidence level, indicating that there was no significant difference between the glucose concentration quantification results obtained using the colorimetric method and the spectrophotometric method.
Pengembangan gear dengan proses additive manufacturing berbasis lattice structure dengan dimensi variasional Indriyana, Vynna Alviolina; Kiswanto, Gandjar; Irwansyah, Ridho
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/rpb15d50

Abstract

Gears are fundamental components in mechanical systems, where reducing weight without compromising strength is a key engineering challenge. This study introduces a multi-material gear with a lattice structure fabricated by Additive Manufacturing (AM). The design integrates an outer gear of Ti-6Al-4V for high strength and wear resistance with an inner gear of 316L stainless steel for structural support. Weight reduction was achieved by generating a diamond wire cube lattice with variable strut diameters, optimized using stress distribution data from finite element analysis and clustering with the K-means algorithm. Structural analysis through ANSYS Explicit Dynamics and fatigue simulations confirmed that stresses remained below the ultimate tensile strength of both materials, ensuring reliable service life. Thermal analysis with CFD indicated a maximum operating temperature of 64.1 °C, within the typical gear range of 50–140 °C. The proposed design reduces gear mass by 34.8% compared to a solid model, demonstrating the feasibility of multi-material AM with lattice optimization for lightweight and durable gear applications. 
Tahapan Dalam Desain Konseptual Mobil terbang Bersayap Tetap Adhitya, Mohammad; Irwansyah, Ridho
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/y76aae85

Abstract

Mobil terbang adalah suatu wahana yang harus mampu beroperasi di jalan raya selayaknya mobil yang kita ketahui secara umum yang wajib memenuhi regulasi mobil raya meliputi dimensi dan hal-hal lain untuk memastikan keselamatan di jalan raya. Mobil terbang di sisi lain saat berfungsi sebagai pesawat terbang relatif tidak dibatasi dalam hal dimensi namun kinerjanya sangat dipengaruhi oleh aspek aerodinamika yang sangat dipengaruhi oleh perbandingan gaya angkat terhadap gaya berat pesawat (lift to weight ratio). Meskipun dinamakan sebagai mobil terbang, namun dari segi teknis dan tahapan desainnya, wahana ini lebih merupakan suatu pesawat terbang yang didesain sedemikian rupa agar dimensi serta sistem roda penopangnya dapat memenuhi fungsi dan regulasi dari suatu mobil. Dalam tulisan ini disampaikan suatu tahapan terstruktur dalam mendesain suatu mobil terbang yang merupakan kombinasi dari parameter-parameter penting suatu desain mobil dan pesawat terbang yang terdiri dari 8 tahapan yaitu 1. Requirements, 2. Weight estimation, 3. Critical performance parameters, 4. Configuration layout, 5. Force analysis due to CG position, 6. Better weight estimation, 7. Performance analysis, dan 8. Optimization. Hasil dari tahapan ini tentunya berupa desain mobil terbang yang dapat memenuhi fungsinya sebagai mobil yang memenuhi regulasi jalan raya dan sebagai pesawat terbang.
Co-Authors Amelia, Almira Citra Ary Maulana Budiarso Budiman, Arif Adtyas Dwi Yuliaji Gerry Julian Hamza Khamis Kombo Herdian, Muhammad Bintang Indriyana, Vynna Alviolina Maryadi, Shendy Akbar Mohammad Adhitya, Mohammad Muhamad Agil Fadhel Muhammad Faridz Athaya Muhammad Mizan Mulya Juarsa Nandy Putra Nasruddin Nasruddin Pamitran, Agus Sunjarianto PAMUNGKAS, ADHIKA ENGGAR Putut Hery Setiawan Warjito Wayan Nata Septiadi Yudan Whulanza