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Conference papers
Ultrasonic imaging in highly attenuating materials with Walsh-Hadamard codes and the decomposition of the time reversal operator
Abstract : In this work, the total focusing method is used to image defects in a high density polyethylene pipe. The viscoelastic attenuation of this material corrupts the images with a high electronic noise. To improve the image quality, the decomposition of the time reversal operator method is combined with spatial Walsh-Hadamard coded transmissions before calculating the images.
Keywords :
Block codes
Characterization
Defects
Imaging systems
Nondestructive examination
Ultrasonic imaging
Coded transmission
Decomposition of the time reversal operator
Defect characterization
Electronic noise
High density polyethylene pipes
Non destructive testing
Time reversal
Walsh-Hadamard code
Ultrasonic testing
https://hal-cea.archives-ouvertes.fr/cea-01811903
Contributor : Léna Le Roy Connect in order to contact the contributor
Submitted on : Monday, June 11, 2018 - 8:04:13 AM
Last modification on : Thursday, February 17, 2022 - 10:08:04 AM
Contributor : Léna Le Roy Connect in order to contact the contributor
Submitted on : Monday, June 11, 2018 - 8:04:13 AM
Last modification on : Thursday, February 17, 2022 - 10:08:04 AM