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The static and dynamic load tests are carried out on the bridge. The calibration is obtained when the deflection with static load and structure frequency with dynamic load are analyzed and are compared with finite element analysis results. Both strain calibration and deflection calibration meet the requirements of the relevant standards of the bridge engineer manual. The maximum deflection meets requirements...
In superconducting magnetic energy storage system (SMES), the current lead is the conductor that connects the room-temperature power supply and the low-temperature cryogenic superconducting magnet. It is the main source of thermal leakage in the system. In order to decrease the thermal leakage, it is necessary to analyze the thermal loss of the current lead and optimize the lead dimension. Because...
In superconducting electric equipments, the current lead connects the room-temperature power supply and the low-temperature superconducting magnet. It is the main source of thermal leakage in the system. In order to decrease the thermal leakage, it is necessary to analyze the thermal loss of current lead. The heat leakage analysis and optimization design of 35kV/2kA current lead are presented in this...
A miniature digital temperature sensor with the ZY cut quartz crystal tuning fork resonators was developed. The quartz crystal tuning fork resonators have the characteristic that the resonance frequency changes by the external temperature, which achieves high sensitivity and high-speed response and frequency stability by a sample structure. The quartz crystal tuning fork resonators are square cross...
Based on the basic law of tunnel rock deformation and distant affection law of tunnel excavation, the method to judge tunnel rock stability according to the state of tunnel rock deformation velocity was put forward. If the deformation velocity changers less and less with the time, the deformation develop to stability. If the deformation velocity does not changer with the time, the tunnel rock locates...
In this paper, a highly sensitive temperature sensor based on quartz tuning fork resonators is reported. The temperature sensor is configured by ZY (110deg/10deg) Cut quartz crystal wafer based bulk acoustic wave (BAW) tuning fork resonators whose operating frequency is at 31 KHz. The ideal thermo-sensitive ZY cut for quartz tuning fork resonators is analyzed with the theory. The characterization...
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