Structural health monitoring platform

The platform dedicates to the research of structural dynamic analysis and control, optimal sensor placement, damage identification, structural fatigue and fracture analysis and life assessment etc. The main experimental facilities include: loading facility, measurement facility and data acquisition and process system.

(1) Loading facility

a) Electromagnetic actuator and control systems

 

Type

Amplitude(mm)

Frequency

Force(N)

J2K---50

15

10~2k

500

J2K---20

10

10~4k

200

J2K---10

10

10~4k

100

 

     

Electromagnetic actuator                                Control System

b) Electro-hydraulic actuator

 

Frequency

Displacement

Force

0~50Hz

±100mm

±100KN

 

Electro-hydraulic actuator

(2) Measurement facility

a) Contact measurement

           

Accelerometer                                                  Pressure sensor

           

              FBG                                                         Displacement transducer

There are many types of sensors, including accelerometers, displacement transducers, pressure sensor, fiber Bragge grating strain sensors (FBG) and so on.

b) Non-Contact measurement

1-D photonic Doppler velocimetry

Frequency: 0~22kHz

Maximum speed: 20mm/s

3-D photonic Doppler velocimetry

Frequency: 0~80KHz

Maximum speed: 10m/s

          

      1-D photonic Doppler velocimetry                3-D photonic Doppler velocimetry

(3) Data acquisition and process system

16 channel acquisition system

Frequency:51.2 kHz

32 channel acquisition system

Frequency:102.4 kHz

         

  16 channel acquisition system                          32 channel acquisition system