Nondestructive material characterization
Abstract
A method and apparatus for nondestructive material characterization, such as identification of material flaws or defects, material thickness or uniformity and material properties such as acoustic velocity. The apparatus comprises a pulsed laser used to excite a piezoelectric (PZ) transducer, which sends acoustic waves through an acoustic coupling medium to the test material. The acoustic wave is absorbed and thereafter reflected by the test material, whereupon it impinges on the PZ transducer. The PZ transducer converts the acoustic wave to electrical impulses, which are conveyed to a monitor.
- Inventors:
-
- Idaho Falls, ID
- Issue Date:
- Research Org.:
- EG & G IDAHO INC
- OSTI Identifier:
- 867718
- Patent Number(s):
- 4995260
- 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
- DOE Contract Number:
- AC07-76ID01570
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- nondestructive; material; characterization; method; apparatus; identification; flaws; defects; thickness; uniformity; properties; acoustic; velocity; comprises; pulsed; laser; excite; piezoelectric; pz; transducer; sends; waves; coupling; medium; wave; absorbed; thereafter; reflected; whereupon; impinges; converts; electrical; impulses; conveyed; monitor; acoustic wave; apparatus comprises; pulsed laser; material properties; acoustic waves; acoustic velocity; apparatus comprise; coupling medium; nondestructive material; material characterization; /73/
Citation Formats
Deason, Vance A, Johnson, John A, and Telschow, Kenneth L. Nondestructive material characterization. United States: N. p., 1991.
Web.
Deason, Vance A, Johnson, John A, & Telschow, Kenneth L. Nondestructive material characterization. United States.
Deason, Vance A, Johnson, John A, and Telschow, Kenneth L. Tue .
"Nondestructive material characterization". United States. https://www.osti.gov/servlets/purl/867718.
@article{osti_867718,
title = {Nondestructive material characterization},
author = {Deason, Vance A and Johnson, John A and Telschow, Kenneth L},
abstractNote = {A method and apparatus for nondestructive material characterization, such as identification of material flaws or defects, material thickness or uniformity and material properties such as acoustic velocity. The apparatus comprises a pulsed laser used to excite a piezoelectric (PZ) transducer, which sends acoustic waves through an acoustic coupling medium to the test material. The acoustic wave is absorbed and thereafter reflected by the test material, whereupon it impinges on the PZ transducer. The PZ transducer converts the acoustic wave to electrical impulses, which are conveyed to a monitor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}
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