Source Location and Dataset Incompleteness in Acoustic Emissions from Ice Tank Tests on Ice-Rubble-Ice Friction

2022 ◽  
pp. 31-49
Author(s):  
Katerina Stavrianaki ◽  
Mark Shortt ◽  
Peter Sammonds
Keyword(s):  
Acoustic Emissions ◽  
Source Location ◽  
Ice Friction

Reliable onset time determination and source location of acoustic emissions in concrete structures

2012 ◽  
Vol 34 (4) ◽  
pp. 529-537 ◽  
Author(s):  
A. Carpinteri ◽  
J. Xu ◽  
G. Lacidogna ◽  
A. Manuello
Keyword(s):  
Concrete Structures ◽  
Acoustic Emissions ◽  
Onset Time ◽  
Source Location ◽  
Time Determination

Source location of acoustic emissions from atmospheric leakage using neural networks

1991 ◽  
Author(s):  
Roger S. Barga ◽  
Mark A. Friesel ◽  
Jack L. Meador
Keyword(s):  
Neural Networks ◽  
Acoustic Emissions ◽  
Source Location

Precise source location of AE doublets by spectral matrix analysis of triaxial hodogram

Geophysics ◽  
1994 ◽  
Vol 59 (1) ◽  
pp. 36-45 ◽  
Author(s):  
Hirokazu Moriya ◽  
Koji Nagano ◽  
Hiroaki Niitsuma
Keyword(s):  
Field Experiments ◽  
Arrival Time ◽  
Acoustic Emissions ◽  
Source Location ◽  
Geothermal Field ◽  
P Wave ◽  
Matrix Analysis ◽  
Spectral Matrix ◽  
The Difference ◽  
Subsurface Fractures

We have developed a precise relative source location technique using acoustic emission doublets (AE doublets) in the triaxial hodogram method to evaluate the direction and distance of subsurface extension cracks. An AE doublet is a pair of acoustic emissions with similar waveforms and adjacent locations on the same crack but which occur at different times. The relative source location is estimated by an analysis in the frequency domain. The relative distance between two AE sources is determined from the difference of P-S arrival time delays by cross‐spectrum analysis. The relative direction is derived using a spectral matrix from the difference in P‐wave polarization directions. We also propose a method to optimize the estimated relative location by using a group of AE doublets. The accuracy of the estimated source location was confirmed by performing field experiments. The relative locations of artificial wave sources about 150 m from a triaxial detector can be estimated with distance errors of less than 1 m, and direction errors of less than 3.8 degrees in both azimuth and inclination. Results of the application of this analysis on AE doublets in a geothermal field demonstrate its ability to evaluate deeper subsurface fractures.

Oto Acoustic Emissions (OAE): the shape-similarity of pure-tone audiogram and OAE-gram

1999 ◽  
Vol 24 (4) ◽  
pp. 377-383
Author(s):  
G. A. van zanten ◽  
A. van de sande ◽  
M. P. brocaar
Keyword(s):  
Pure Tone ◽  
Acoustic Emissions ◽  
Shape Similarity ◽  
Pure Tone Audiogram

Leading Edge Detection of RF-Signal for Power Arcing Source Location

2014 ◽  
Vol 9 (5) ◽  
pp. 1060
Author(s):  
Frank Zoko Ble ◽  
Matti Lehtonen ◽  
Ari Sihvola ◽  
Charles Kim
Keyword(s):  
Edge Detection ◽  
Leading Edge ◽  
Source Location ◽  
Rf Signal
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