scholarly journals Rancang Bangun Teknologi Automatic Surface Treatmen Untuk Meningkatkan Ketahanan Jalan Rel Kereta Api

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Willy Artha Wirawan ◽  
Tumiran Anang Cundoko ◽  
Hari Boedi Wahjono ◽  
Fadli Rozaq ◽  
Sunardi ,

Batang rel berfungsi sebagai penahan berat beban dari rangkaian kereta api yang berjalan diatasnya. Berat yang besar pada rangkaian dapat mengakibatkan gesekan dan keausan yang berlebihan sehingga dibutuhkan permukaan rel yang keras dan tahan terhadap keausan. Tujuan pada penelitian ini adalah rancang bangun  prototype alat yang berfungsi sebagai upaya meningkatkan ketahanan pada permukaan jalan rel kereta api. Metode yang digunakan pada konsep penelitian ini dengan teori flame hardening yaitu dengan pemanasan rel kereta api menggunakan gas oxy-asetilen kemudian dilakukan quenching secara cepat untuk meningkatkan kekerasan pada permukaan rel kereta api. Pembuatan prototype dimulai dengan perancangan hardware yang meliputi alat Surface Treatment dan perancangan perangkat software program control automatic. Hasil prototype dilakukan uji fungsi keberhasilan alat yang dapat dioperasikan dengan baik menggunakan mode manual dengan kecepatan maksimal 0.1 m/s dan mode otomatis 0.08 m/s.

Author(s):  
Min Ku Lee ◽  
G.H. Kim ◽  
K.H. Kim ◽  
Sung Mo Hong ◽  
Wheung Whoe Kim ◽  
...  

2020 ◽  
Vol 9 (4) ◽  
pp. e27942662
Author(s):  
Patrícia Capellato ◽  
Cláudia Eliana Bruno Marino ◽  
Gilbert Silva ◽  
Lucas Victor Benjamim Vasconcelos ◽  
Rodrigo Perito Cardoso ◽  
...  

During the last decades, researchers have been growing the interest in surface treatment with an antimicrobial agent. Silver nanoparticles (AgNPs) are widely used in biomedical fields due to their potent antimicrobial activity. So, in this study was investigated silver particles (isles) coated on titanium surface for dental and orthopedic application. Silver particles coating process on titanium surface were performed via sputtering that is a plasma-assisted deposition technique with and titanium without treatment was applied as comparing standard. Plasma treatment parameters were optimized so that the result was not a thin film of Ag but dispersed particles of Ag on the Ti-cp surface. The alloy surfaces were investigated using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). In order to investigate antibacterial potential Staphylococcus aureus and Escherichia coli have been used at Agar diffusion assay. The results were analyzed by analysis of variance (ANOVA) in order to verify significant difference antimicrobial activity between samples that have shown no difference between the surfaces studied treatments. For silver deposition scattered particles (isles) over titanium surface for a 10-minute treatment, EDS revealed by silver clusters that the particles were not properly scattered onto surface, hence, the low effectiveness in antibacterial activity.


1997 ◽  
Vol 36 (5) ◽  
pp. 753
Author(s):  
Jung Man Lee ◽  
Sang Hoon Shin ◽  
Won Hoon Lee ◽  
Kyu Hyen Oh ◽  
Hak Young Jung ◽  
...  

2013 ◽  
Vol 51 (10) ◽  
pp. 735-741
Author(s):  
Dong-Yong Kim ◽  
Eun-Wook Jeong ◽  
Kwun Nam Hui ◽  
Youngson Choe ◽  
Jung-Ho Han ◽  
...  

2017 ◽  
Author(s):  
Fawaz Alqahtani ◽  
Fabrizio Messina ◽  
Elzene Kruger ◽  
Heerunpal Gill ◽  
Michael Ellis ◽  
...  

2008 ◽  
Vol 128 (5) ◽  
pp. 339-342
Author(s):  
Dai Ling ◽  
Yin Ting ◽  
Lin Fuchang ◽  
Yan Fei

2010 ◽  
Vol 130 (10) ◽  
pp. 858-864 ◽  
Author(s):  
Kazuo Shimizu ◽  
Akira Umeda ◽  
Shuichi Muramatsu ◽  
Marius Blajan

2012 ◽  
Vol 132 (3) ◽  
pp. 270-271
Author(s):  
Kazuo Shimizu ◽  
Yuta Noma ◽  
Marius Blajan ◽  
Shigeya Naritsuka

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