光纤光栅是一种波长调制型的滤波器件,因其具有抗电磁干扰能力强、占用质量轻、空间小、绝缘性能好、能多点复用、能埋入待测结构内部等优点,目前已经在大型工程结构的健康监测中得到了广泛的使用。本文在高铁路基动力学足尺(1:1)实验模型平台上,采用光纤光栅传感技术对钢轨的受力特性进行了相关的研究;同时,用圆柱形钢筋模拟轨道扣件螺栓的受力情况,这对分析和诊断高铁轨道结构的稳定性以及安全性具有深远的意义。 本文研究的工作主要包含在以下三个方面之中: (1) 将钢轨简化为简支梁模型,通过Abaqus有限元分析软件(Finiteelementanalysissoftware)对该简化模型进行受力仿真,得出在...Fiber Bragg grating(FBG) is a kind of passive filter. FBG has been widely used in the health monitoring of large engineering structures at present as it has the advantages of anti-electromagnetic interference, light weight, small size, good insulation, can be embedded in the measurement structure and so on. In this paper, the related research on the mechanical properties of rail structure was cond...学位:理学硕士院系专业:信息科学与技术学院_无线电物理学号:2312013115309
A railway monitoring system firstly includes an optical fiber. A first part of the fiber is attachab...
The EU is in the process of upgrading the national railway networks to meet the demands from high-sp...
The paper reports results obtained from an unusual situation in structural monitoring - a "test-to-d...
本文对光纤光栅的包层模理论、光纤光栅的调谐特性、以及基于莫尔效应的各种子结构光纤光栅,如相移光纤光栅、取样光纤光栅、变迹光纤光栅等进行了理论和实验研究,目的是探讨侧向写入光纤光栅过程中与包层模损耗有关...
光纤光栅是近年来最受关注,发展前景最为广阔的光无源器件之一,在光纤传感领域已经得到了广泛的应用。其中在振动测量领域,基于光纤光栅的加速度传感器由于不受电磁干扰、绝缘性好、易于联网复用等优点而受到了大量...
[[abstract]]本論文主要以布拉格光纖光柵(fiber Bragg grating FBG),當感測器受應變作用時,使得布拉格光纖光柵的中心波長產生漂移的效果進而達到感測的目的,本研究經過感...
Fiber Bragg Grating (FBG) sensor technology has been attracting substantial industrial interests for...
[[abstract]]近幾年來,光纖光柵大量的被應用,所以以布拉格光纖光柵為骨幹的感測器,已成為感測器領域上最受重視的技術之一。 以壓力感測器而言,因裸光纖光柵壓力感測器的對壓力感測的靈敏度有限,為...
FBG(Fiber Bragg Grating)感測器因為有許多優良的機械性質,近年來成為一個廣泛運用的感測器,然而若是單純使用其光學特性進行量測,無法進行短時間內劇烈變化的動態或是暫態量測,而能量調...
光纤光栅是性能优良的敏感元件,具有损耗低、可复用、抗电磁干扰等优点。采用光纤光栅的倾斜传感器可以克服现有电子式倾斜传感器存在的不足。大部分采用光纤光栅的传感器是基于波长编码的,实现波长的精确解调是应用...
The use of optical fibre Bragg grating (FBG) strain sensors to monitor the condition of safety criti...
[[abstract]]本論文所研製的傾斜感測器是以布拉格光纖光柵(Fiber Bragg grating FBG)為感測元件,當待測物體受傾斜時,會因外力而影響固定於三角形彈片上之光纖光柵,將可觀...
分别采用金属和聚合物材料研究了封装材料对布拉格光纤光栅(FBG)传感器灵敏性的影响,并通过加速疲劳实验对传感器安装工艺的疲劳可靠性进行了研究.结果表明:焊接安装的金属封装FBG应变传感器具有良好的灵敏...
Fiber optical sensors have played an important role in applications for monitoring the health of civ...
用材料力学理论分析了D形光纤Bragg光栅(D-shaped fiber Bragg grating,D-FBG)以及常规光纤Bragg光栅由弯曲引起的轴向应变,得到了光栅Bragg波长漂移的弯曲敏感...
A railway monitoring system firstly includes an optical fiber. A first part of the fiber is attachab...
The EU is in the process of upgrading the national railway networks to meet the demands from high-sp...
The paper reports results obtained from an unusual situation in structural monitoring - a "test-to-d...
本文对光纤光栅的包层模理论、光纤光栅的调谐特性、以及基于莫尔效应的各种子结构光纤光栅,如相移光纤光栅、取样光纤光栅、变迹光纤光栅等进行了理论和实验研究,目的是探讨侧向写入光纤光栅过程中与包层模损耗有关...
光纤光栅是近年来最受关注,发展前景最为广阔的光无源器件之一,在光纤传感领域已经得到了广泛的应用。其中在振动测量领域,基于光纤光栅的加速度传感器由于不受电磁干扰、绝缘性好、易于联网复用等优点而受到了大量...
[[abstract]]本論文主要以布拉格光纖光柵(fiber Bragg grating FBG),當感測器受應變作用時,使得布拉格光纖光柵的中心波長產生漂移的效果進而達到感測的目的,本研究經過感...
Fiber Bragg Grating (FBG) sensor technology has been attracting substantial industrial interests for...
[[abstract]]近幾年來,光纖光柵大量的被應用,所以以布拉格光纖光柵為骨幹的感測器,已成為感測器領域上最受重視的技術之一。 以壓力感測器而言,因裸光纖光柵壓力感測器的對壓力感測的靈敏度有限,為...
FBG(Fiber Bragg Grating)感測器因為有許多優良的機械性質,近年來成為一個廣泛運用的感測器,然而若是單純使用其光學特性進行量測,無法進行短時間內劇烈變化的動態或是暫態量測,而能量調...
光纤光栅是性能优良的敏感元件,具有损耗低、可复用、抗电磁干扰等优点。采用光纤光栅的倾斜传感器可以克服现有电子式倾斜传感器存在的不足。大部分采用光纤光栅的传感器是基于波长编码的,实现波长的精确解调是应用...
The use of optical fibre Bragg grating (FBG) strain sensors to monitor the condition of safety criti...
[[abstract]]本論文所研製的傾斜感測器是以布拉格光纖光柵(Fiber Bragg grating FBG)為感測元件,當待測物體受傾斜時,會因外力而影響固定於三角形彈片上之光纖光柵,將可觀...
分别采用金属和聚合物材料研究了封装材料对布拉格光纤光栅(FBG)传感器灵敏性的影响,并通过加速疲劳实验对传感器安装工艺的疲劳可靠性进行了研究.结果表明:焊接安装的金属封装FBG应变传感器具有良好的灵敏...
Fiber optical sensors have played an important role in applications for monitoring the health of civ...
用材料力学理论分析了D形光纤Bragg光栅(D-shaped fiber Bragg grating,D-FBG)以及常规光纤Bragg光栅由弯曲引起的轴向应变,得到了光栅Bragg波长漂移的弯曲敏感...
A railway monitoring system firstly includes an optical fiber. A first part of the fiber is attachab...
The EU is in the process of upgrading the national railway networks to meet the demands from high-sp...
The paper reports results obtained from an unusual situation in structural monitoring - a "test-to-d...