FOURIER MODEL FOR ULTRASONIC FREQUENCY ANALYSIS

Fourier transform techniques are applied to the interpretation of ultrasonic frequency analysis, yielding results in basic agreement with previous interference models, but capable of explaining anomalies unaccounted for by such models. In addition, the present approach indicates that both attenuation and phase-shift measurements may be obtained directly from the displayed spectrum, either separately or simultaneously.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00255327
• Supplemental Notes:
  • This article was presented at the National Fall Conference of the American Society for Nondestructive Testing, October 13-16, 1975, in Atlanta, Georgia; and was sponsored by the Energy Research and Development Administration under contract with Union Carbide Corporation.
• Corporate Authors:

  American Society for Nondestructive Testing

  914 Chicago Avenue
  Evanston, IL  United States  60202
• Authors:
  • Simpson Jr, W A
• Publication Date: 1976-12

Media Info

• Features: Figures; References;
• Pagination: p. 261-264
• Serial:
  • Materials Evaluation
  • Volume: 34
  • Issue Number: 12
  • Publisher: American Society for Nondestructive Testing
  • ISSN: 0025-5327

Subject/Index Terms

• TRT Terms: Audio frequency; Fourier analysis; Fourier transforms; Phase shift (Electricity); Spectrum analysis; Ultrasonic waves
• Uncontrolled Terms: Attenuation
• Old TRIS Terms: Phase shift
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00148428
• Record Type: Publication
• Contract Numbers: F41608-73-D-6739
• Files: TRIS
• Created Date: Mar 15 1977 12:00AM