Method for monitoring health of a seal
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United States of America Patent
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Jul 17, 2018
Grant Date -
Nov 24, 2016
app pub date -
May 19, 2016
filing date -
May 22, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
There is disclosed a method of monitoring the health of an abradable seal located on a piston of an actuator, the method comprising the steps of: (i) measuring an initial velocity of said actuator piston while said actuator is maintained in a passive condition at an initial time; (ii) operating said actuator; (iii) measuring a subsequent velocity of said actuator piston while said actuator is maintained in a passive condition at a subsequent time; (iv) repeating steps (ii)-(iii) and either: recording or outputting the measured subsequent velocities over time; or determining a health status of said actuator when said subsequent velocity has increased above a predetermined amount.
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