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光纤传感振动检测系统及其实验研究 总被引:3,自引:0,他引:3
实际工程结构中的振动检测是十分重要的,也是十分复杂的,常用的结构振动检测传感器易受工程现场恶劣环境的影响.而光纤传感器具有小巧、抗电磁干扰、灵敏度高、适合长期监测等优点。本文建立了基于马赫—曾德(Mech-Zehnder)干涉原理的光纤传感振动检测系统.研制了运用先进的数字信号处理技术采集和处理数据的专用软件,并在典型结构件——钢制悬臂梁结构上进行了外加信号作用下的强迫振动检测和冲击载荷作用下的自由衰减振动检测,测量了该结构件的频率及振幅,其结果与同时进行的成熟的电测结果相近,说明光纤传感器用于结构件的振动测量是可靠的。本文为光纤传感器应用于实际工程的振动检测提供了新的技术装置,具有工程应用前景。 相似文献
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This paper presents a simple method for measurements, of dynamic deformation by mismatch white speckle method using dynamic photoelastic device. The method is able to measure not only large dynamic deformation[1], but also small dynamic deformation. Combined with dynamic isochromatepattern, the elastic modulus Poisson’s ratio and dynamic material fringe value of the material measured can be obtained by the method. 相似文献
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This paper presents a simple method for measuremts of dynamic deformation bymismatch white speckle method using dynamic photoelastic device.The method is able tomeasure not only large dynamic deformation,but also small dynamic deformation.Combined with dynamic isochromate pattern,the elastic modulus Poisson’s ratioand dynamic material fringe value of the material measured can be obtained by themethod. 相似文献
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