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Akira Matsumoto
Researcher at Nihon University
Publications - 59
Citations - 1075
Akira Matsumoto is an academic researcher from Nihon University. The author has contributed to research in topics: Bogie & Axle. The author has an hindex of 15, co-authored 57 publications receiving 958 citations.
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Grand Challenges in Transportation and Transit Systems
TL;DR: The fundamental principle "safety first" is still the key priority in most research today as mentioned in this paper, however, thanks to extensive interface with various customers, research and innovation in practices have shifted from optimizing functional purposes and targets through each stage of life cycle toward modernization, reliability, resilience, and better quality of life.
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Expression of receptor activator of NF-kappa B ligand and osteoprotegerin in culture of human periodontal ligament cells
Tomokazu Hasegawa,Yoshitaka Yoshimura,Takashi Kikuiri,Yasutaka Yawaka,Sadaaki Takeyama,Akira Matsumoto,Haruhisa Oguchi,Tetsuo Shirakawa +7 more
TL;DR: Results indicate that PDL cells synthesize both RANKL and OPG and that inactivation of OPG may play a key role in the differentiation of osteoclasts.
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Condition Monitoring of Railway Track Using In-Service Vehicle
TL;DR: In this paper, a portable track condition monitoring system for easy installation on in-service vehicles is presented. But, the system is not suitable for the use in emergency situations, as it requires the car body roll angle to be calculated using a rate gyroscope to distinguish line irregularities from level irregularities.
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Formation mechanism and countermeasures of rail corrugation on curved track
TL;DR: This article found that corrugation of rail in curve section of track is formatted by stick-slip vibration between wheel and rail, which is caused by the large creepage and vertical force fluctuation on wheel/rail contact surface.
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A new measuring method of wheel–rail contact forces and related considerations
Akira Matsumoto,Yasuhiro Sato,Hiroyuki Ohno,Masao Tomeoka,Kosuke Matsumoto,Jun Kurihara,Tomohisa Ogino,Masuhisa Tanimoto,Yasushi Kishimoto,Yoshi Sato,Takuji Nakai +10 more
TL;DR: In this paper, the lateral contact force is measured from the lateral distortion of wheel measured directly by several non-contact gap sensors, and the longitudinal contact forces are also measured from deflection of spring or the strain of parts of the bogies except wheelsets.