LASER SHOCK PEENING SYSTEM WITH TIME-OF-FLIGHT MONITORING
First Claim
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1. A controller comprising:
- an input configured to receive a signal from a transducer indicative of a laser shock event at a workpiece; and
a processor connected to the input and configured to determine a travel time of energy associated with the laser shock event from the workpiece to the transducer and output a determination of peen quality from the travel time.
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Abstract
A system and method for monitoring a laser shock peening process includes a sensor connected to a controller. The controller includes an input and a processor. The input is connected to the sensor to receive a signal indicative of a laser shock event at a workpiece. The processor is connected to the input and is configured to determine a time-of-flight of residual energy associated with the laser shock event from the workpiece to the sensor and determine peen quality from the time-of-flight of the residual energy.
32 Citations
22 Claims
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1. A controller comprising:
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an input configured to receive a signal from a transducer indicative of a laser shock event at a workpiece; and
a processor connected to the input and configured to determine a travel time of energy associated with the laser shock event from the workpiece to the transducer and output a determination of peen quality from the travel time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A laser shock peening system comprising:
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a laser source constructed to emit a laser beam at a workpiece;
a sensor directed toward the workpiece to detect a shock event; and
a controller connected to the laser source and the sensor, the controller configured to;
(A) receive a first signal from the laser source and a second signal from the sensor;
(B) determine a time-of-flight value from the first signal and the second signal; and
(C) determine a quality of a peen from the time-of-flight value. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of monitoring a laser shock peening process comprising the steps of:
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(A) detecting emission of a laser beam from a laser source towards a workpiece for initiation of a peen event;
(B) detecting a residual energy associated with generation of a shockwave generated by impingement of the laser beam on an absorption layer;
(C) determining a time duration between generation of the residual energy and detection of the residual energy; and
(D) deriving peen quality from the determined time duration. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification