Laser shock peening system with time-of-flight monitoring
First Claim
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1. A controller comprising:
- a first input configured to receive a signal transmitted from a transducer indicative of at least one of spectral data and amplitude data of energy associated with a laser shock event at a workpiece in response to a laser beam generated via a laser source;
a second input configured to receive a signal from the laser source; and
a processor connected to the first and second inputs and configured to determine a travel time of energy associated with the laser shock event from the workpiece to the transducer, the travel time based on the energy of the laser beam generated via the laser source as derived from the first and second input signals, and output a determination of peen quality based on the travel time in response thereto.
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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.
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Citations
20 Claims
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1. A controller comprising:
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a first input configured to receive a signal transmitted from a transducer indicative of at least one of spectral data and amplitude data of energy associated with a laser shock event at a workpiece in response to a laser beam generated via a laser source; a second input configured to receive a signal from the laser source; and a processor connected to the first and second inputs and configured to determine a travel time of energy associated with the laser shock event from the workpiece to the transducer, the travel time based on the energy of the laser beam generated via the laser source as derived from the first and second input signals, and output a determination of peen quality based on the travel time in response thereto. - View Dependent Claims (2, 3, 4)
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5. 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 travel time of energy of the laser beam generated via the laser source, the travel time based on the energy of the laser beam generated via the laser source as derived from the first and second input signals; and (C) determine a quality of a peen from the travel time of energy value. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. 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, the time duration based on the energy of the laser beam as derived from the detected emission and the detected residual energy; and (D) deriving peen quality from the determined time duration. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification