PT. XYZ adalah perusahaan manufaktur yang bergerak di bidang produksi. Salah satu hasil produksi ini Bogie atau roda kereta api. Dalam proses masih dihadapkan dengan defect sering terjadi seperti crack, pinhole, sinter, dan juga roughness memberi pengaruh besar hingga melebihi batas standart perusahaan. Penelitian bertujuan untuk mengetahui persentase kecacatan, faktor utama penyebab kecacatan ...

In this study, a large-eddy simulation (LES) is conducted to investigate meandering airflows generated throughout the underbody of real-shaped train model in open air. our previous was shown by an LES around simplified model. The shape affects flow. However, thus far, no systematic analyses that consider bogies have been conducted. Our experimental results qualitatively reproduced power spectra...

People use trains as a means of transportation to travel various nearby and distant destinations, resulting in an increasing amount time spent inside such vehicles. Consequently, railway sectors are focusing significantly more on enhancing passengers’ demand level satisfaction, including but not limited high-speed travel, safety, riding comfort. This paper provides state-of-the-art review avail...

three piece bogies are widely in use by the freight railway services throughout the world. in comparison with the other freight bogies they cost less and are easier to maintain. however, they do not exhibit favorable curving behavior. amongst the methods to improve the bogie performance is the proposal to introduce lateral clearance in the bogies’ axleboxs. in the case of the three piece bogies...

We consider the extended Hubbard model on a two-dimensional square lattice at half-filling. The is investigated using strong coupling diagram technique. sum infinite series of ladder diagrams allowing for full-scale charge and spin fluctuations actual short-range antiferromagnetic order nonzero temperatures. In agreement with earlier results, we find first-order phase transition in subsystem oc...