Ultrasonic Measurements Research: Progress in 1989

Abstract

The design of a practical and reasonably accurate prototype transfer calibration system for acoustic emission (AE) transducers has evolved in the past year. This year's work involved the use of a 20 cm thick block which replaced the 3.3 cm thick plate that was found to be unsuitable. The prototype transfer calibration system was constructed and demonstrated to be workable. Results from elastic impact experiments were found to be in good agreement with theory. Formulas have been derived for the calculation of Green's functions for multi-layered media, and computer code has been written for calculation of Green's functions for single layered media.

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Document Details

Document Type
Technical Report
Publication Date
Jun 28, 1989
Accession Number
ADA234964

Entities

People

  • D. G. Eitzen
  • F. R. Breckenridge
  • N. N. Hsu
  • S. E. Fick
  • T. M. Proctor

Organizations

  • National Institute of Standards and Technology

Tags

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Acoustics
  • Agreements
  • Air Resistance
  • Calibration
  • Classification
  • Composite Materials
  • Elastic Properties
  • Frequency
  • Materials
  • Measurement
  • Microvessels
  • Security
  • Standards
  • Thickness
  • Transducers
  • Ultrasounds

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Software Engineering