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All Journal Mekanika: Majalah Ilmiah Mekanika Multidisciplinary Innovations and Research in Applied Engineering
Laksono, Fajar Budi
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Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Optimum Calcination Temperature In Titanium Dioxide (TiO2) Photocatalyst Coating For Stain-Resistant Fabrics Laksono, Fajar Budi
Multidisciplinary Innovations and Research in Applied Engineering Vol. 1 No. 1 (2024)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/25wh3g91

Abstract

The utilization of wind energy in Indonesia is still low due to the average wind speed ranging from 3 m/s to 11 m/s making it the increasing demand for clothing has driven innovations to address the issue of dirt on clothes in a more practical and environmentally friendly manner. This study explores the use of titanium dioxide (TiO2) as an anti-dirt agent on fabric through a photocatalytic coating process. TiO2 was chosen for its photocatalytic properties, which can oxidize organic compounds into carbon dioxide (CO2) and water (H2O) when exposed to UV light. The fabric coating was carried out using a modified sol-gel method and tested at various calcination temperatures. The optimal result was obtained at a calcination temperature of 600°C, producing anatase crystals with the best photocatalytic properties. Fabric coated with TiO2 showed the ability to degrade stains and kill bacteria after nine coating applications, ensuring an even distribution of TiO2 particles. This study concludes that fabric coated with TiO2 is effective in self-cleaning under UV exposure, offering an environmentally friendly solution suitable for application in sunlight-rich Indonesia.
Design Analysis and Structural Prediction of Bus Driver Chair Support: A Study Case using HOQ and FEM Cho, Joung Hyung; Ridwan, Ridwan; Kusuma, Rama Panji; Triyono, Joko; Muhayat, Nurul; Fajri, Aprianur; Laksono, Fajar Budi
Mekanika: Majalah Ilmiah Mekanika Vol 22, No 1 (2023): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v22i1.44371

Abstract

The bus driver's comfort is crucial. The location of the driver's seat, which is correlated with the seat support design, is one of the elements supporting his comfort. By considering the safety factor, House of Quality (HOQ), weight, shape, and seat support dimensions, this study intends to ascertain how the characteristics of the bus seat support form after receiving a load or force. Conducting a field visit to gather the necessary data was the initial step in this research. The following stage was to decide on the design criteria based on the collected data. Next, use SolidWork to model the design. Using the Finite Element Method (FEM), this program can investigate design characteristics. The loading simulation under consideration included clutch engagement, bus brake application, and clutch engagement, whether the support was static or stationary. The validation with two supporting journals was then run as the following step to validate the findings. According to the study's findings, the constant chair support fulfills the typical value, whereas Support 1 was the most fracture-prone. The outcomes of Supports 2 and 3 demonstrated that the support strength was weak since it was subjected to an unequal load.
Design of the Bengawan Unmanned Vehicle (UV) Roboboat: Mandakini Neo Nubli, Haris; Utomo, Fahri Setyo; Diatmaja, Hananta; Prabowo, Aditya Rio; Ubaidillah, Ubaidillah; Susilo, Didik Djoko; Wibowo, Wibowo; Muttaqie, Teguh; Laksono, Fajar Budi
Mekanika: Majalah Ilmiah Mekanika Vol 21, No 2 (2022): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v21i2.61624

Abstract

Mandakini Neo was made with the ship's capacity, speed, and comfort in mind, as well as the ship's hydrodynamic performance and construction cost. Therefore, the method used to determine the hydrostatic characteristics is through a simulation consisting of a resistance test, stability test, maneuver test, and seakeeping test. The simulation uses Maxsurf software with the Savitsky method, which is then processed by data. Global Positioning System (GPS) and ultrasonic sensor tests were also conducted. Based on the simulation results, the stability of the Mandakini Neo ship has a GZ value of 0.1417 m with an angle of 30°, which follows the standards of the International Maritime Organization (IMO). In testing, the maneuvers obtained have met IMO standards based on tactical and advanced diameters. Based on the seakeeping test, when the speed is 5 knots, the heave movement has the same magnitude for all wave headings, 0.0096 m. while the most considerable rolling motion is in the wave direction of 135°, which is 0.36 m, and the most considerable pitch motion is in the direction of the 180° wave, which is 0.042 m. At a speed of 10 knots, the heave motion produced is the same as for all wave headings.
Co-Authors Aditya Rio Prabowo Cho, Joung Hyung Diatmaja, Hananta Didik Djoko Susilo Fajri, Aprianur Joko Triyono Kusuma, Rama Panji Muttaqie, Teguh Nubli, Haris Nurul Muhayat Ridwan, Ridwan Ubaidillah Ubaidillah Utomo, Fahri Setyo Wibowo Wibowo