منابع مشابه
Embedding Wireless Sensors in Railway Sleepers
In recent years there has been intensive research and development in the application of wireless sensor network (WSN) technologies to various sectors such as healthcare, home automation, environmental monitoring and the monitoring of large structures, eg, buildings and bridges. The monitoring of railway infrastructure such as the tracks, bearers and sleepers is another area that could potential...
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68 October 2007 EngineerIT This article aims to automate such intuitive human skills for future sleeper inspections. Pattern recognition has been proposed for classification and results from sensors based on the abovementioned methods were fused to generate a single output condition. Final results achieved in this work indicate an overall classification rate of around 88% compared to the human ...
متن کاملInfluence of Ground Impedance on the Sound Radiation of a Railway Track
Railway rolling noise is radiated by the vibration of the rail and wheel. The TWINS model is well established as a method of predicting the generation of vibration and noise and this has been used successfully to design noise mitigation measures. However, the existing model used to predict the sound radiation from the rail considers the rail to be located in free space whereas, in reality, the ...
متن کاملSound radiation from nested cylindrical shells
ABSTRACT Fluid-loaded nested cylindrical shells are modelled using a doubled-walled cylindrical shell structure closed at each end by circular end plates and excited by a transverse force at one end. The effects of various influencing factors on the radiated sound power are examined corresponding to non-concentricity of the cylindrical shells, entrained fluid and rib connections in the annular ...
متن کاملIntroducing a New Limit States Design Concept to Railway Concrete Sleepers: An Australian Experience
Over 50 years, a large number of research and development projects with respect to the use of cementitious and concrete materials for manufacturing railway sleepers have been significantly progressed in Australia, Europe, and Japan (Wang, 1996; Murray and Cai, 1998; Wakui and Okuda, 1999; Esveld, 2001; Freudenstein and Haban, 2006; Remennikov and Kaewunruen, 2008). Traditional sleeper materials...
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ژورنال
عنوان ژورنال: Journal of Sound and Vibration
سال: 2016
ISSN: 0022-460X
DOI: 10.1016/j.jsv.2016.01.018