Assessment of integration method for displacement determination using field accelerometer and geophone data
| Autor: | Yu-Jun Cui, Nicolas Calon, Francisco Lamas-Lopez, S. Costa D’Aguiar |
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| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Acoustics Linear variable differential transformer 0211 other engineering and technologies General Engineering Electrical engineering Geophone 02 engineering and technology 010502 geochemistry & geophysics Accelerometer 01 natural sciences Displacement (vector) Bogie Axle Amplitude Axle load business 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Journal of Zhejiang University-SCIENCE A. 18:553-566 |
| ISSN: | 1862-1775 1673-565X |
| Popis: | A conventional French railway track was instrumented with accelerometers and geophones at three depths: sleeper (surface), interlayer (ITL, z=−0.93 m), and transition layer (TL, z=−1.20 m). A linear variable differential transformer (LVDT) was also used to monitor the displacement at the sleeper level. The recorded data allow the integration method (double for accelerometer and simple for geophone) for displacement determination to be assessed. Several questions need to be addressed prior to the selection of an adequate monitoring system: definition of signal filtering processes, influence on results of the different loading wavelengths, repeatability of measurements, train speed and axle load impact and their ranges of validity for each sensor. It was found that the main frequencies that caused more than 95% of the displacement of the monitored materials are in the low frequency range |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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