Dissertation > Excellent graduate degree dissertation topics show

FBG-based Strain Monitoring Studies

Author: WangZiQian
Tutor: WangYongSheng
School: Beijing Jiaotong University
Course: Physical Electronics
Keywords: FBG Strain monitoring Vibration sensor Finite element analysis
CLC: TP274
Type: Master's thesis
Year: 2010
Downloads: 287
Quote: 2
Read: Download Dissertation

Abstract


Compared with the traditional electric sensors, optical fiber Bragg grating sensor has many advantages, such as resistant to corrosion, strong anti-jamming capability, light quality, small volume, repeatability, widespread monitoring, etc.these advantages make it very suitable for applications in the train where the environment is very complex to monitoring the strain and vibration of the key parts. Research in the fiber Bragg grating structural health monitoring system to monitor the train running condition, and to ensure safe operation of the train has important significance.The main contents include:1. Based on Bragg equation and the theory of fiber grating, the temperature and strain sensing characteristic of the FBG have been analyzed, as well as the problems of temperature compensation.2. Design a kind of FBG vibration sensor based on the characteristics of fiber grating strain and uniform strength cantilever, improve the sensitivity of purpose by adopting FBG in parallel to fixed above a certain height of the cantilever beam.3. It’s proved that the FBG vibration sensor has good vibration frequency response characteristics through the vibration test, and it’s suitable for locomotive vibration monitoring.4. Establish the model of aluminium alloy beam and make a finite element analysis, according to the results of analysis to find the maximum strain fatigue fracture and the site for the pasted FBG strain sensors.5. By applying different loads of aluminum alloy beam, we get the key parts’ strain value by the FBG strain sensors and the resistance strain gauge. Optimization model for again meshing finite element simulation results prove that the fiber grating strain monitoring and the reliability of the finite element analysis of the model.

Related Dissertations

  1. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  2. EDM Electrode Wear Mechanism and Control Research,TG661
  3. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  4. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  5. Design of Testing Equipment for Electronic Products,TN06
  6. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  7. Airborne radar antenna pedestal rapid design systems research and development,TN959.73
  8. Sham hose drum drive means and hydraulic system of the structure,TE973
  9. The magnetorheological damper mechanical properties and Gun Recoil,TB535.1
  10. Nonlinear Structural Dynamics Analysis and Optimization Design on Naval Gun Driver,TJ391
  11. Design and Analysis of Automatic Steel Pipes Butt Tool,U673.38
  12. Multi-objective Optimization Design of Vertical Machining Center,TG659
  13. Assessment of Shenyang 2nd Ring Road Over-line Continuous Beam Bridge Safety Based on the Test,U447
  14. The Association between N-terminal Pro-brain Natriuretic Peptide (NT-proBNP), Fasting Blood Glucose (FBG), Highsensitive C-reactive Protein (HsCRP) and Leptin in Patient with Acute Coronary Syndorme (ACS),R541.4
  15. Improving Design and Performance Analysis of 5 Ton Trackless Forging Manipulator,TG315
  16. Investigation of 2μm Tm3+-Doped Double-Clad Fiber Lasers,TN248
  17. Research on Distributed Fiber Optic Vibration Sensor,TP212.14
  18. Fabrication and Characteristics of Micro-Bubble Generator Based on Carbon Nanocoils,TP211.4
  19. Research of Cymbal Piezoelectric Generator Performance,TM919
  20. Research on the Development of Rapid Design System of Semi-Trailer and Its Optimization,U469.61
  21. Structural Reliability Study of Flight Motion Simulator Based on ANSYS,TP391.9

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system
© 2012 www.DissertationTopic.Net  Mobile