Accession Number:

ADA172726

Title:

Ultrasonic Measurements Research: Improved Acoustic Emission Methods.

Descriptive Note:

Summary rept.,

Corporate Author:

NATIONAL BUREAU OF STANDARDS GAITHERSBURG MD

Personal Author(s):

• Breckenridge,F. R.
• Proctor,T. M.
• Greenspan,M.
• Eitzen,D. G.

Report Date:

1986-08-01

Pagination or Media Count:

13.0

Abstract:

Developments on new transducers for high fidelity measurement of normal and tangential displacement are summarized. Improvements in calibration techniques are outlined. The transducer aperture effect is measured and compared to theories. Keywords Acoustic Emission Transducer Calibration Aperture Deconvolution Greens Function Surface Pulse Rayleigh Wave Elastic Plate.

Descriptors:

• *ACOUSTIC MEASUREMENT
• *ACOUSTIC EMISSIONS
• ULTRASONICS
• TRANSDUCERS
• CALIBRATION
• GREENS FUNCTIONS
• RAYLEIGH WAVES

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE