Acoustic sensor for real-time control for the inductive heating process
Abstract
Disclosed is a system and method for providing closed-loop control of the heating of a workpiece by an induction heating machine, including generating an acoustic wave in the workpiece with a pulsed laser; optically measuring displacements of the surface of the workpiece in response to the acoustic wave; calculating a sub-surface material property by analyzing the measured surface displacements; creating an error signal by comparing an attribute of the calculated sub-surface material properties with a desired attribute; and reducing the error signal below an acceptable limit by adjusting, in real-time, as often as necessary, the operation of the inductive heating machine.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174519
- Patent Number(s):
- 6628404
- Application Number:
- 09/718,293
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Kelley, John Bruce, Lu, Wei-Yang, and Zutavern, Fred J. Acoustic sensor for real-time control for the inductive heating process. United States: N. p., 2003.
Web.
Kelley, John Bruce, Lu, Wei-Yang, & Zutavern, Fred J. Acoustic sensor for real-time control for the inductive heating process. United States.
Kelley, John Bruce, Lu, Wei-Yang, and Zutavern, Fred J. Tue .
"Acoustic sensor for real-time control for the inductive heating process". United States. https://www.osti.gov/servlets/purl/1174519.
@article{osti_1174519,
title = {Acoustic sensor for real-time control for the inductive heating process},
author = {Kelley, John Bruce and Lu, Wei-Yang and Zutavern, Fred J.},
abstractNote = {Disclosed is a system and method for providing closed-loop control of the heating of a workpiece by an induction heating machine, including generating an acoustic wave in the workpiece with a pulsed laser; optically measuring displacements of the surface of the workpiece in response to the acoustic wave; calculating a sub-surface material property by analyzing the measured surface displacements; creating an error signal by comparing an attribute of the calculated sub-surface material properties with a desired attribute; and reducing the error signal below an acceptable limit by adjusting, in real-time, as often as necessary, the operation of the inductive heating machine.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 30 00:00:00 EDT 2003},
month = {Tue Sep 30 00:00:00 EDT 2003}
}
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Works referenced in this record:
Stress Evaluation and Model Validation Using Laser Ultrasonics
report, February 1999
- Dike, Jay J.; Lu, Wei-yang; Peng, Lawrence W.
- SAND99-8232