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Journal articles
Noise filtering in the synthetic transmit aperture imaging by decomposition of the time reversal operator: Application to flaw detection in coarse-grained stainless steels
Abstract : In the present work, the Synthetic Transmit Aperture (STA) imaging is applied on coarse grained steels using a contact phased-array probe. In order to reduce the noise introduced by the heterogeneous structure, as well as artifacts due to surface guided waves, the Decomposition of the Time Reversal Operator method is performed before calculating STA images.
Keywords :
Antenna phased arrays
Audio signal processing
Guided electromagnetic wave propagation
Materials testing
Nondestructive examination
Spurious signal noise
Synthetic apertures
Ultrasonic applications
Ultrasonic imaging
Decomposition of the time reversal operator
Flaw detection
Heterogeneous materials
Heterogeneous structures
Noise filtering
Non destructive testing
Phased array probes
Synthetic transmit aperture imaging
Ultrasonic testing
https://hal-cea.archives-ouvertes.fr/cea-01827678
Contributor : Léna Le Roy <>
Submitted on : Monday, July 2, 2018 - 3:35:56 PM
Last modification on : Saturday, May 1, 2021 - 3:46:23 AM
Contributor : Léna Le Roy <>
Submitted on : Monday, July 2, 2018 - 3:35:56 PM
Last modification on : Saturday, May 1, 2021 - 3:46:23 AM
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