Results 11 to 20 of about 6,112 (180)
A review of karst collapse mechanisms
Carsologica Sinica, 2023 Karst collapse is a global geohazard and has been reported to occur in 23 countries, including China, the United States of America, Canada, South Africa, Italy, France, the United Kingdom, Germany, Russia, and Turkey.
Xiaozhen JIANG +6 more
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Applied Sciences, 2020 Compaction quality of railroad subgrade relates directly to the stability and safety of train operation, and the core problem of the Intelligent Compaction of railroads is the transmission and evolution characteristics of vibration wave.
Changwei Yang +4 more
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Recent Progress in Distributed Fiber Optic Sensors
Sensors, 2012 Rayleigh, Brillouin and Raman scatterings in fibers result from the interaction of photons with local material characteristic features like density, temperature and strain.
Xiaoyi Bao, Liang Chen
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Strengthening of the railroad track for high-speed traffic on the Bukhara-Misken section [PDF]
E3S Web of ConferencesIn the article the work of ballast prism and subgrade is considered, on the basis of analysis two-layer reinforcement from geotextile is offered, also strengthening by water-soluble polymer in conditions of sandy zone on high-speed sections of railroads ...
Abdujabarov Abduhamit +3 more
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Technology transfer: Transportation [PDF]
Standard Research Institute (SRI) has operated a NASA-sponsored team for four years. The SRI Team is concentrating on solving problems in the public transportation area and on developing methods for decreasing the time gap between the development and the
Anyos, T., Lizak, R., Merrifield, D.
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Ring model of railroad wheel vibrations [PDF]
The Journal of the Acoustical Society of America, 1982 A ring model for prediction of the vibration characteristics of railroad wheels is presented. Earlier workers showed that ring theory gave a good explanation of the ratio of resonant frequencies in the railroad wheel, assuming flexural modes are excited in the rim. It was assumed that the massive rim drove the plate of the wheel in forced vibration. In
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Vibration damping to control railroad wheel squeal [PDF]
The Journal of the Acoustical Society of America, 1983 The squeal noise radiated by rapid transit wheels on sharp turns is an important instance of friction generated noise. It is caused by the lateral slip-stick frictional force between the wheel and railhead. Noise control methods such as rail lubrication, hard faced rails, tuned wheel dampers, and resilient wheels have not been entirely satisfactory ...
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Modelling rail track deterioration and maintenance: current practices and future needs [PDF]
, 1997 As commercialisation and privatisation of railway systems reach the political agendas in a number of countries, including Australia, the separation of infrastructure from operating business dictates that track costs need to be shared on an equitable ...
Ferreira, Luis, Murray, Martin H.
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International Journal of Prognostics and Health Management, 2016 Railcar condition is an important factor in the complex web of relationships between railroads, railcar leasing companies, shippers and railcar builders. The most important reasons for this are operational safety and economic considerations pertaining to
Parham Shahidi +2 more
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Recent Progress in Brillouin Scattering Based Fiber Sensors
Sensors, 2011 Brillouin scattering in optical fiber describes the interaction of an electro-magnetic field (photon) with a characteristic density variation of the fiber.
Liang Chen, Xiaoyi Bao
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