Nondestructive material characterization

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:867718

Deason, Vance A ^[1]; Johnson, John A ^[1]; Telschow, Kenneth L ^[1]

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1. Idaho Falls, ID

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.

• Research Organization: EG & G IDAHO INC
• DOE Contract Number: AC07-76ID01570
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4995260
• OSTI ID: 867718
• Country of Publication: United States
• Language: English

Related Subjects

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
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