Non-destructive testing method and apparatus utilizing phase multiplication holography

Collins, H Dale; Prince, James M; Davis, Thomas J

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Title: Non-destructive testing method and apparatus utilizing phase multiplication holography

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Abstract

An apparatus and method for imaging of structural characteristics in test objects using radiation amenable to coherent signal processing methods. Frequency and phase multiplication of received flaw signals is used to simulate a test wavelength at least one to two orders of magnitude smaller than the actual wavelength. The apparent reduction in wavelength between the illumination and recording radiation performs a frequency translation hologram. The hologram constructed with a high synthetic frequency and flaw phase multiplication is similar to a conventional acoustic hologram construction at the high frequency.

Inventors:

Collins, H Dale ^[1]; Prince, James M ^[2]; Davis, Thomas J ^[1]

Richland, WA
Kennewick, WA

Issue Date:: Sun Jan 01 00:00:00 EST 1984

Research Org.:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

OSTI Identifier:: 865197

Patent Number(s):: 4476434

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N27/9046 - {by analysing electrical signals}
G01N29/0609 - {Display arrangements, e.g. colour displays
G01N29/0663 - {by acoustic holography
G01N29/069 - {Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique}

G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G01S15/897 - {using application of holographic techniques

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DOE Contract Number:: AT(45-1)-1830

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: non-destructive; testing; method; apparatus; utilizing; phase; multiplication; holography; imaging; structural; characteristics; radiation; amenable; coherent; signal; processing; methods; frequency; received; flaw; signals; simulate; wavelength; magnitude; apparent; reduction; illumination; recording; performs; translation; hologram; constructed; synthetic; similar; conventional; acoustic; construction; processing methods; processing method; structural characteristics; signal processing; apparatus utilizing; signal process; non-destructive testing; utilizing phase; /324/

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                    Collins, H Dale, Prince, James M, and Davis, Thomas J. Non-destructive testing method and apparatus utilizing phase multiplication holography.  United States: N. p., 1984. 
        Web.

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                    Collins, H Dale, Prince, James M, & Davis, Thomas J. Non-destructive testing method and apparatus utilizing phase multiplication holography.  United States.

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                    Collins, H Dale, Prince, James M, and Davis, Thomas J. Sun .  
        "Non-destructive testing method and apparatus utilizing phase multiplication holography".  United States.  https://www.osti.gov/servlets/purl/865197.

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@article{osti_865197,

  title        = {Non-destructive testing method and apparatus utilizing phase multiplication holography},

  author       = {Collins, H Dale and Prince, James M and Davis, Thomas J},

  abstractNote = {An apparatus and method for imaging of structural characteristics in test objects using radiation amenable to coherent signal processing methods. Frequency and phase multiplication of received flaw signals is used to simulate a test wavelength at least one to two orders of magnitude smaller than the actual wavelength. The apparent reduction in wavelength between the illumination and recording radiation performs a frequency translation hologram. The hologram constructed with a high synthetic frequency and flaw phase multiplication is similar to a conventional acoustic hologram construction at the high frequency.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1984},

  month        = {Sun Jan 01 00:00:00 EST 1984}

}

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