Vance A. Deason - Idaho Falls ID Kenneth L. Telschow - Idaho Falls ID
Assignee:
Bechtel BWXT Idaho, LLC - Idaho Falls ID
International Classification:
G01B 902
US Classification:
73657, 356357
Abstract:
Apparatus for producing an acoustic image of an object according to the present invention may comprise an excitation source for vibrating the object to produce at least one acoustic wave therein. The acoustic wave results in the formation of at least one surface displacement on the surface of the object. A light source produces an optical object wavefront and an optical reference wavefront and directs the optical object wavefront toward the surface of the object to produce a modulated optical object wavefront. A modulator operatively associated with the optical reference wavefront modulates the optical reference wavefront in synchronization with the acoustic wave to produce a modulated optical reference wavefront. A sensing medium positioned to receive the modulated optical object wavefront and the modulated optical reference wavefront combines the modulated optical object and reference wavefronts to produce an image related to the surface displacement on the surface of the object. A detector detects the image related to the surface displacement produced by the sensing medium.
Method And Apparatus For Assessing Material Properties Of Sheet-Like Materials
Kenneth L. Telschow - Idaho Falls ID Vance A. Deason - Idaho Falls ID
Assignee:
Bechtel Bwxt Idaho, LLC - Idaho Falls ID
International Classification:
G01B 902
US Classification:
356503, 356502, 356499
Abstract:
Apparatus for producing an indication of a material property of a sheet-like material according to the present invention may comprise an excitation source for vibrating the sheet-like material to produce at least one traveling wave therein. A light source configured to produce an object wavefront and a reference wavefront directs the object wavefront toward the sheet-like material to produce a modulated object wavefront. A modulator operatively associated with the reference wavefront modulates the reference wavefront in synchronization with the traveling wave on the sheet-like material to produce a modulated reference wavefront. A sensing medium positioned to receive the modulated object wavefront and the modulated reference wavefront produces an image of the traveling wave in the sheet-like material, the image of the anti-symmetric traveling wave being related to a displacement amplitude of the anti-symmetric traveling wave over a two-dimensional area of the vibrating sheet-like material. A detector detects the image of the traveling wave in the sheet-like material.
Vance A. Deason - Idaho Falls ID Kenneth L. Telschow - Idaho Falls ID
Assignee:
Bechtel BWXT Idaho, LLC - Idaho Falls ID
International Classification:
G01B 902
US Classification:
356502, 356450, 356432
Abstract:
An inspection system calibration method includes producing two sideband signals of a first wavefront; interfering the two sideband signals in a photorefractive material, producing an output signal therefrom having a frequency and a magnitude; and producing a phase modulated operational signal having a frequency different from the output signal frequency, a magnitude, and a phase modulation amplitude. The method includes determining a ratio of the operational signal magnitude to the output signal magnitude, determining a ratio of a 1st order Bessel function of the operational signal phase modulation amplitude to a 0th order Bessel function of the operational signal phase modulation amplitude, and comparing the magnitude ratio to the Bessel function ratio.
Method And Apparatus For Acoustic Imaging Of Objects In Water
Vance A. Deason - Idaho Falls ID, US Kenneth L. Telschow - Idaho Falls ID, US
Assignee:
Bechtel BWXT Idaho, LLC - Idaho Falls ID
International Classification:
G03H 300
US Classification:
367 10, 367 7
Abstract:
A method, system and underwater camera for acoustic imaging of objects in water or other liquids includes an acoustic source for generating an acoustic wavefront for reflecting from a target object as a reflected wavefront. The reflected acoustic wavefront deforms a screen on an acoustic side and correspondingly deforms the opposing optical side of the screen. An optical processing system is optically coupled to the optical side of the screen and converts the deformations on the optical side of the screen into an optical intensity image of the target object.
Vance A. Deason - Idaho Falls ID, US Kenneth L. Telschow - Idaho Falls ID, US
Assignee:
Battelle Energy Alliance, LLC - Idaho Falls ID
International Classification:
G01B 9/02
US Classification:
356502
Abstract:
An imaging system includes: an object wavefront source and an optical microscope objective all positioned to direct an object wavefront onto an area of a vibrating subject surface encompassed by a field of view of the microscope objective, and to direct a modulated object wavefront reflected from the encompassed surface area through a photorefractive material; and a reference wavefront source and at least one phase modulator all positioned to direct a reference wavefront through the phase modulator and to direct a modulated reference wavefront from the phase modulator through the photorefractive material to interfere with the modulated object wavefront. The photorefractive material has a composition and a position such that interference of the modulated object wavefront and modulated reference wavefront occurs within the photorefractive material, providing a full-field, real-time image signal of the encompassed surface area.
Vance A. Deason - Idaho Falls ID, US Kenneth L. Telschow - Idaho Falls ID, US
Assignee:
Battelle Energy Alliance, LLC - Idaho Falls ID
International Classification:
G01B 9/02
US Classification:
356502, 356432
Abstract:
An imaging system includes: an object wavefront source and an optical microscope objective all positioned to direct an object wavefront onto an area of a vibrating subject surface encompassed by a field of view of the microscope objective, and to direct a modulated object wavefront reflected from the encompassed surface area through a photorefractive material; and a reference wavefront source and at least one phase modulator all positioned to direct a reference wavefront through the phase modulator and to direct a modulated reference wavefront from the phase modulator through the photorefractive material to interfere with the modulated object wavefront. The photorefractive material has a composition and a position such that interference of the modulated object wavefront and modulated reference wavefront occurs within the photorefractive material, providing a full-field, real-time image signal of the encompassed surface area.
Vance A. Deason - Idaho Falls ID, US Kenneth L. Telschow - Idaho Falls ID, US
Assignee:
Battelle Energy Alliance, LLC - Idaho Falls ID
International Classification:
H01L 41/08
US Classification:
310338, 310320
Abstract:
A sensor apparatus and method for detecting an environmental factor is shown that includes an acoustic device that has a characteristic resonant vibrational frequency and mode pattern when exposed to a source of acoustic energy and, further, when exposed to an environmental factor, produces a different resonant vibrational frequency and/or mode pattern when exposed to the same source of acoustic energy.
Thomas K. Williams - Federal Way WA, US Kenneth Telschow - Des Moines WA, US
Assignee:
The Boeing Company - Chicago IL Battelle Energy Alliance, LLC - Idaho Falls ID
International Classification:
G01B 9/02
US Classification:
356502
Abstract:
Techniques for ultrasonic determination of the interfacial relationship of multi-component systems are discussed. In implementations, a laser energy source may be used to excite a multi-component system including a first component and a second component at least in partial contact with the first component. Vibrations resulting from the excitation may be detected for correlation with a resonance pattern indicating if discontinuity exists at the interface of the first and second components.