Field Testing and Application of Fiber Optic Displacement Sensors in Civil Structures

1997 ◽  
Author(s):  
Daniele Inaudi
Keyword(s):  
Fiber Optic ◽  
Field Testing ◽  
Civil Structures ◽  
Displacement Sensors

Growing market acceptance for fiber optic solutions in civil structures

2004 ◽  
Author(s):  
Thomas Graver ◽  
Daniele Inaudi ◽  
Justin Doornink
Keyword(s):  
Fiber Optic ◽  
Civil Structures

Implementation of Long Gauge Fiber Optic Sensor Arrays in Civil Structures

2005 ◽  
pp. 403-412 ◽  
Author(s):  
Yujin Liang ◽  
Adam Tennant ◽  
Hongqiang Jia ◽  
Xiaoxu Xiong ◽  
Farhad Ansari
Keyword(s):  
Fiber Optic ◽  
Sensor Arrays ◽  
Fiber Optic Sensor ◽  
Civil Structures ◽  
Optic Sensor

Design and field testing of a fiber optic pressure sensor for underground water level monitoring

2019 ◽  
Author(s):  
Luca Schenato ◽  
Juan Pablo Aguilar López ◽  
Andrea Galtarossa ◽  
Alessandro Pasuto ◽  
Thom Bogaard ◽  
...  
Keyword(s):  
Water Level ◽  
Pressure Sensor ◽  
Fiber Optic ◽  
Field Testing ◽  
Underground Water ◽  
Underground Water Level ◽  
Level Monitoring ◽  
Water Level Monitoring

scholarly journals Monitoring Shear Behavior of Prestressed Concrete Bridge Girders Using Acoustic Emission and Digital Image Correlation

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5622 ◽  
Author(s):  
Fengqiao Zhang ◽  
Gabriela I. Zarate Garnica ◽  
Yuguang Yang ◽  
Eva Lantsoght ◽  
Henk Sliedrecht
Keyword(s):  
Acoustic Emission ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Prestressed Concrete ◽  
Field Testing ◽  
Image Correlation ◽  
Bridge Girders ◽  
Concrete Bridge ◽  
Displacement Sensors ◽  
Prestressed Concrete Bridge

In the Netherlands, many prestressed concrete bridge girders are found to have insufficient shear–tension capacity. We tested four girders taken from a demolished bridge and instrumented these with traditional displacement sensors and acoustic emission (AE) sensors, and used cameras for digital image correlation (DIC). The results show that AE can detect cracking before the traditional displacement sensors, and DIC can identify the cracks with detailed crack kinematics. Both AE and DIC methods provide additional information for the structural analysis, as compared to the conventional measurements: more accurate cracking load, the contribution of aggregate interlock, and the angle of the compression field. These results suggest that both AE and DIC are suitable options that warrant further research on their use in lab tests and field testing of prestressed bridges.

Design and Analysis of a 6-DOF Monolithic Nanopositioning Stage

2010 ◽  
Vol 437 ◽  
pp. 61-65 ◽  
Author(s):  
Ling Li Cheng ◽  
Jian Wei Yu ◽  
Xiao Fen Yu
Keyword(s):  
Mathematical Model ◽  
Finite Element Method ◽  
Optimization Problem ◽  
Fiber Optic ◽  
Piezoelectric Actuators ◽  
Flexure Hinge ◽  
Constraint Optimization ◽  
The Finite Element Method ◽  
Displacement Sensors ◽  
Final Design

A 6-DOF monolithic nanopositioning stage is developed for three coordinate measuring machines (CMM) with nanometer resolution. The stage consists of a monolithic flexure hinge mechanism, six piezoelectric actuators and six fiber-optic displacement sensors. A mathematical model of the constraint optimization problem is presented. Based on the solution of the optimization problem, the final design of the 6-DOF stage is also presented. The numerical analysis on static and dynamic behavior of the stage is done by using the finite element method. The experimental results of the performance of the 6-DOF stage are presented.

Sign in / Sign up

Export Citation Format

Share Document