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Title: Acoustic emission linear pulse holography

Abstract

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.

Inventors:
 [1];  [1];  [2]
  1. Richland, WA
  2. West Richland, WA
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
OSTI Identifier:
865528
Patent Number(s):
4531411
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
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
DOE Contract Number:  
AT(45-1)-1830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Collins, H Dale, Busse, Lawrence J, and Lemon, Douglas K. Acoustic emission linear pulse holography. United States: N. p., 1985. Web.
Collins, H Dale, Busse, Lawrence J, & Lemon, Douglas K. Acoustic emission linear pulse holography. United States.
Collins, H Dale, Busse, Lawrence J, and Lemon, Douglas K. Tue . "Acoustic emission linear pulse holography". United States. https://www.osti.gov/servlets/purl/865528.
@article{osti_865528,
title = {Acoustic emission linear pulse holography},
author = {Collins, H Dale and Busse, Lawrence J and Lemon, Douglas K},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

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