Výsledky vyhledávání - "Jung Won Seo"

Akademický článek

Development of Electro-Mechanical Actuator for Wheel Steering of Railway Vehicles

Autor: Hyun Moo Hur, Jung Won Seo, Kyung Ho Moon, Jong Hyun Choi

Publikováno v: Actuators, Vol 13, Iss 11, p 460 (2024)

We developed an electro-mechanical actuator for use as a steering device for railway vehicles. The specifications for a 50 kN-class electro-mechanical actuator capable of steering control for a sharp of a railway radius curve of up to 250 m, and with

Externí odkaz: https://doaj.org/article/08a86a2b1ea74cc4a133d0464480d397

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Akademický článek

Performance Evaluation of Track Curvature Sensor for Curvature Estimation in a Curved Section of Railway Tracks

Autor: Hyun Moo Hur, Yu Jeong Shin, Jung Won Seo, Kyung Ho Moon

Publikováno v: Applied Sciences, Vol 12, Iss 11, p 5398 (2022)

Active railway vehicles such as tilting trains and active steering bogies are being developed to improve the curve running performance of railway vehicles. In this case, a technology for sensing a curve and extracting curve information such as a curv

Externí odkaz: https://doaj.org/article/5848892f059745618efb9efb8d3d8a5e

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Akademický článek

Effect of multiple weld repairs on fatigue strength of bogie frame of railroad vehicle

Autor: Jung-Won Seo, Hyun-Moo Hur, Seok-Jin Kwon, Kyung-Ho Moon

Publikováno v: Advances in Mechanical Engineering, Vol 15 (2023)

In the welded structure of railroad vehicles, the bogie frame requires a service life more than 25 years, cracks occur in the weld zone owing to the application of repetitive fatigue loading during operation. When cracks occur and propagate in the we

Externí odkaz: https://doaj.org/article/8fd837ea8bba489c98ba743e1f521e1e

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Akademický článek

Applicability Evaluation of Surface and Sub-Surface Defects for Railway Wheel Material Using Induced Alternating Current Potential Drops

Autor: Seok-Jin Kwon, Jung-Won Seo, Min-Soo Kim, Young-Sam Ham

Publikováno v: Sensors, Vol 22, Iss 24, p 9981 (2022)

The majority of catastrophic wheelset failures are caused by surface opening fatigue cracks in either the wheel tread or wheel inner. Since failures in railway wheelsets can cause disasters, regular inspections to check for defects in wheels and axle

Externí odkaz: https://doaj.org/article/cb14e914a6394fcc80b9f8759b75530f

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Akademický článek

Effect of Welding Polarity on Mechanical Properties of Submerged Arc Welded Railway Vehicle Wheels

Autor: Byeong-Choon Goo, Jung-Won Seo, Young-Jin Lee

Publikováno v: Metals, Vol 12, Iss 8, p 1381 (2022)

When a railway vehicle moves on a curved rail, sliding contact between the rail head side and wheel flange causes wear on the wheel flange. Traditionally, a wheel with thinned flange is machined to get a minimum flange thickness specified for structu

Externí odkaz: https://doaj.org/article/0ae7b76d558a4140b746e0c07df557fb

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