The FOCISTM system comes loaded with a software suite for test setup, real-time data collection and vibration monitoring, and post-processing analysis.

Test Setup

FOCISTM software allows precise configuration of each rotor stage, setup of the probes and control of their function (blade tip timing, blade tip clearance, or both) through a graphical interface.

Picture Above: Rotor Stage Configuration

Choose the best placement of the optical probes around the rotor based on the vibration modes of interest with the Circumferential Optimizer.

circumferential optimizer 440
Picture Above: Circumferential Optimizer

Signal Monitoring and Adjustment

The FOCISTM software enables verification of probe operation, and verification of the signals collected via a graphical interface ("digital oscilloscope").

Scan of optical probes data
Picture Above: Verification of Probe Signal Quality

Test operators can adjust laser power and channel gain through software.

siu web interface 
Picture Above: Laser Power and Channel Gain Control 

Clearance Measurement

FOCISTM software can output clearance measurement as average of all blades or blade-by-blade.  Minimum, maximum, and average clearance is available.

blade by blade visualization of blade tip clearance
Picture Above: Blade-by-blade clearance visualization


Blade Tip Timing and Vibration Analysis

The FOCISTM software suite includes real-time and post-processing blade vibration software.

Real-Time Blade Vibration Software

DAQ+ is the real-time blade vibration software for test monitoring and visualization of blade vibration in real time.

Real-Time Campbell plot on DAQ+ software 
Picture: DAQ+ Software for Real-Time Vibration Monitoring

Post-Processing Software

BT is the post-processing software for deep analysis of blade vibration events, both synchronous and asynchronous.

Output of blade vibration monitoring system
Picture Above: Examples of plots of blade vibration results (Campbell, Magnitude, Frequency, and Phase)

Gene­rate Plots of Recor­ded Parameters

  • Rela­tive & Absolute blade posi­tion
  • Deflec­tion (including auto­ma­tic deter­mi­na­tion of deflec­tion based on poly­no­mial curve fit to remove the static blade posi­tion)
  • RPM
  • History, Campbell, and Waterfall plots are available

Analy­sis Modules

  • Asyn­chro­nous analy­sis
    • All blades FFT
    • Iden­ti­fi­ca­tion of nodal diame­ter response and flut­ter events
    • Frequency, magni­tude & phase for the stage
  • Synchro­nous analy­sis:
    • Iden­tify respon­ding engine orders via sine wave fit for all probes on a per rev basis
    • Frequency, magni­tude & phase for all blades


Find Out More

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