Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Journal of Research and Technology Pena Teknik : Jurnal Ilmiah Ilmu-ilmu Teknik
Wijaya, Alvido Toto
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Studi Pengaruh Variasi Resin terhadap Laju Korosi pada Material FRP Novitrie, Nora Amelia; Alvido Toto Wijaya; Bambang Antoko
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.343

Abstract

Pipes in the oil and gas industry use carbon steel which contains a corrosive fluid with fluctuating acidity. This condition causes the corrosion resistance of the pipe to decrease so that other materials that are more resistant to corrosive conditions are needed, for example Fiberglass Reinforced Plastic (FRP). FRP is a composite material made of resin which is then formed into pipes. In this study, trials were carried out on polyester resin, silicon rubber resin and epoxy resin to determine the value of their corrosion rate. The level of resistance of a material to corrosion generally has a corrosion rate value between 0.025 - 5.08 mmpy. The method used is the immersion test of the specimen using the ASTM G31 - 72 standard.The results obtained from this experiment are that polyester has the lowest corrosion rate than epoxy and silicon rubber and polyester resin with a fiber composition of 40% and fiber position 40° has a corrosion rate of 0.566 mmpy so that it meets the level of resistance of a material to corrosion.  
Analysis of Variation in the Number of Layers in the Hardfacing Process of ASTM A216 WCB Material on Hardness, Wear, and Microstructure Wibowo, Alvalo Toto; Al Amin, Mochammad Karim; Wahyudi, Mohammad Thoriq; Kurniyanto, Hendri Budi; Amri, Moh. Syaiful; Firmansyah, Moch. Aria; Leonard, Rikky; Wijaya, Alvido Toto
PENA TEKNIK: Jurnal Ilmiah Ilmu-Ilmu Teknik VOLUME 10 NUMBER 2 SEPTEMBER 2025
Publisher : Faculty of Engineering, Andi Djemma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51557/yknegr07

Abstract

The selection of transportation fleets plays a crucial role in determining the cost efficiency of logistics operations. This study aims to evaluate the feasibility of investing in company-owned vehicles compared to using third-party rental services on the Bandung–KTSH route operated by PT X. Using a quantitative approach with a causal associative design, this research applies the Vehicle Operating Cost (VOC) method supported by investment feasibility analysis tools including Cash Flow, Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (PBP). The analysis shows that the average daily operational cost of company-owned vehicles reaches IDR 1.904.479, which is higher than the rental cost of IDR 1.865.385 per day. Additionally, the results show a negative NPV (-IDR 344.739.419), negative IRR (–11%), and an unattainable payback period within the 5-year investment horizon. Therefore, it is concluded that using leased vehicles is more cost-efficient than investing in company-owned trucks for this specific route.
Co-Authors Bambang Antoko Firmansyah, Moch. Aria Kurniyanto, Hendri Budi Leonard, Rikky Mochammad Karim Al Amin Moh. Syaiful Amri Novitrie, Nora Amelia Wahyudi, Mohammad Thoriq Wibowo, Alvalo Toto