skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

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:
 [1];  [2];  [1]
  1. (Richland, WA)
  2. (Kennewick, WA)
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA
OSTI Identifier:
865197
Patent Number(s):
4476434
Assignee:
United States of America as represented by United States (Washington, DC) PNNL
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/

Citation Formats

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.
Collins, H. Dale, Prince, James M., & Davis, Thomas J. Non-destructive testing method and apparatus utilizing phase multiplication holography. United States.
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.
@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 = {1984},
month = {1}
}

Patent:

Save / Share: