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Quick Reference

Blade Tip Timing
Engine Health Monitoring
Finite Element Model
Event Determination
Probe Sensors
Observed Engine Order
Traveling Wave Plot

Non-Intrusive Stress Measurement System NSMS

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NSMS Fundamentals

NSMS Probe

Minimal effect on blade vibratory characteristics.

 

Externally Mounted Sensors

NSMS instrumentation consists of a set of case mounted probes that accurately determine the arrival time of a blade tip at a particular case location. Optical, capacitive and eddy current probes can be used for the arrival time measurement.

 

The example blade (fig.1) demonstrates how case mounted probes (red) placed at unequal distances record an arriving blade tip (green). Probes are placed at pre-determined locations around the case. These locations are calculated by AMS software to optimize observation of specific engine orders.

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