Acoustic emission linear pulse holography

Patent · Tue Jul 30 00:00:00 EDT 1985

OSTI ID:6473765

Collins, H D; Busse, L J; Lemon, D K

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.

• Assignee: The United States of America as represented by the United Department of Energy
• Patent Number(s): US 4531411
• OSTI ID: 6473765
• Resource Relation: Patent File Date: Filed date 25 Oct 1983; Other Information: PAT-APPL-545426
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
LEAK DETECTORS
COMPUTER GRAPHICS
DESIGN
HOLOGRAPHY
REACTOR COMPONENTS
ACOUSTIC EMISSION TESTING
ACOUSTIC MEASUREMENTS
ACOUSTIC MONITORING
DEFECTS
COMPUTER CALCULATIONS
CRACK PROPAGATION
DATA PROCESSING
IMAGE PROCESSING
PULSE TECHNIQUES
REACTOR SAFETY
REMOTE SENSING
SOUND WAVES
TIME-OF-FLIGHT METHOD
TIMING CIRCUITS
TRANSDUCERS
ULTRASONOGRAPHY
WAVE PROPAGATION
ACOUSTIC TESTING
ELECTRONIC CIRCUITS
MATERIALS TESTING
MONITORING
NONDESTRUCTIVE TESTING
PROCESSING
SAFETY
TESTING
220900* - Nuclear Reactor Technology- Reactor Safety
220200 - Nuclear Reactor Technology- Components & Accessories