TY - GEN
T1 - Exploiting Non-Linear Chirp and sparse deconvolution to enhance the performance of pulse-compression ultrasonic NDT
AU - Ricci, Marco
AU - Callegari, Sergio
AU - Caporale, Salvatore
AU - Monticelli, Marcello
AU - Battaglini, Luigi
AU - Eroli, Massimiliano
AU - Senni, Luca
AU - Rovatti, Riccardo
AU - Setti, Gianluca
AU - Burrascano, Pietro
N1 - Generated from Scopus record by KAUST IRTS on 2023-02-15
PY - 2012/12/1
Y1 - 2012/12/1
N2 - A pulse-compression procedure based on Non-Linear Chirp for Ultrasonic Non Destructive Testing is presented. Non-Linear Chirp signals can be tailored to reproduce any desired continuous spectrum. Here, such capability is exploited to take into account the features of the specific hardware set-up in use, and particularly to adapt the excitation signal to the probes. An application of the proposed procedure to Air-Coupled Ultrasound Imaging is also presented. In order to enhance the imaging resolution, L1-norm Total Variation deconvolution is exploited and compared with standard L2-norm Wiener deconvolution. Although the usage of Air-Coupled probes entails a high attenuation of the ultrasonic signals due to transmission in air and reflections at the air-sample interface, the experimental results show that the combination of Pulse Compression technique and of advanced signal processing guarantees the effectiveness of the inspection. © 2012 IEEE.
AB - A pulse-compression procedure based on Non-Linear Chirp for Ultrasonic Non Destructive Testing is presented. Non-Linear Chirp signals can be tailored to reproduce any desired continuous spectrum. Here, such capability is exploited to take into account the features of the specific hardware set-up in use, and particularly to adapt the excitation signal to the probes. An application of the proposed procedure to Air-Coupled Ultrasound Imaging is also presented. In order to enhance the imaging resolution, L1-norm Total Variation deconvolution is exploited and compared with standard L2-norm Wiener deconvolution. Although the usage of Air-Coupled probes entails a high attenuation of the ultrasonic signals due to transmission in air and reflections at the air-sample interface, the experimental results show that the combination of Pulse Compression technique and of advanced signal processing guarantees the effectiveness of the inspection. © 2012 IEEE.
UR - http://ieeexplore.ieee.org/document/6562363/
UR - http://www.scopus.com/inward/record.url?scp=84882318379&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2012.0372
DO - 10.1109/ULTSYM.2012.0372
M3 - Conference contribution
SN - 9781467345613
SP - 1489
EP - 1492
BT - IEEE International Ultrasonics Symposium, IUS
ER -