Acoustic emission linear pulse holography

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865528

Collins, H Dale ^[1]; Busse, Lawrence J ^[1]; Lemon, Douglas K ^[2]

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1. Richland, WA
2. West Richland, WA

Defects in a structure are imaged as they propagate, using their emitted acoustic energy as a monitored source. Short bursts of acoustic energy propagate through the structure to a discrete element receiver array. A reference timing transducer located between the array and the inspection zone initiates a series of time-of-flight measurements. A resulting series of time-of-flight measurements are then treated as aperture data and are transferred to a computer for reconstruction of a synthetic linear holographic image. The images can be displayed and stored as a record of defect growth.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• DOE Contract Number: AT(45-1)-1830
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4531411
• OSTI ID: 865528
• Country of Publication: United States
• Language: English

Related Subjects

acoustic
emission
linear
pulse
holography
defects
structure
imaged
propagate
emitted
energy
monitored
source
bursts
discrete
element
receiver
array
reference
timing
transducer
located
inspection
zone
initiates
series
time-of-flight
measurements
resulting
treated
aperture
data
transferred
computer
reconstruction
synthetic
holographic
image
images
displayed
stored
record
defect
growth
time-of-flight measurements
acoustic energy
acoustic emission
emission line
holographic image
linear pulse
time-of-flight measurement
receiver array
/73/