Ultrasonic imaging with narrow aperture phased array

2002 ◽  
Vol 86 (2) ◽  
pp. 72-81
Author(s):  
Naoki Takizawa ◽  
Akihisa Ohya ◽  
Iwaki Akiyama
Keyword(s):  
Phased Array ◽  
Ultrasonic Imaging

scholarly journals Ultrasonic Imaging of Thick Carbon Fiber Reinforced Polymers through Pulse-Compression-Based Phased Array

2021 ◽  
Vol 11 (4) ◽  
pp. 1508
Author(s):  
Muhammad Khalid Rizwan ◽  
Stefano Laureti ◽  
Hubert Mooshofer ◽  
Matthias Goldammer ◽  
Marco Ricci
Keyword(s):  
Carbon Fiber ◽  
Pulse Compression ◽  
Phased Array ◽  
Signal To Noise Ratio ◽  
Near Field ◽  
Ultrasonic Imaging ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Custom Made ◽  
Carbon Fiber Reinforced

The use of pulse-compression in ultrasonic non-destructive testing has assured, in various applications, a significant improvement in the signal-to-noise ratio. In this work, the technique is combined with linear phased array to improve the sensitivity and resolution in the ultrasonic imaging of highly attenuating and scattering materials. A series of tests were conducted on a 60 mm thick carbon fiber reinforced polymer benchmark sample with known defects using a custom-made pulse-compression-based phased array system. Sector scan and total focusing method images of the sample were obtained with the developed system and were compared with those reconstructed by using a commercial pulse-echo phased array system. While an almost identical sensitivity was found in the near field, the pulse-compression-based system surpassed the standard one in the far-field producing a more accurate imaging of the deepest defects and of the backwall of the sample.

Ultrasonic imaging of stress corrosion crack formed in high temperature pressurized water using subharmonic phased array

2010 ◽  
Author(s):  
Yoshikazu Ohara ◽  
Yohei Shintaku ◽  
Satoshi Horinouchi ◽  
Makoto Hashimoto ◽  
Yuichi Yamaguchi ◽  
...  
Keyword(s):  
High Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Phased Array ◽  
Ultrasonic Imaging ◽  
Pressurized Water

Echo-Doppler ultrasonic imaging with a phased array

1997 ◽  
Author(s):  
Hyunkeun Kim ◽  
Mehrdad Soumekh
Keyword(s):  
Phased Array ◽  
Ultrasonic Imaging

High-Resolution Ultrasonic Imaging of Dento-Periodontal Tissues Using a Multi-Element Phased Array System

2016 ◽  
Vol 44 (10) ◽  
pp. 2874-2886 ◽  
Author(s):  
Kim-Cuong T. Nguyen ◽  
Lawrence H. Le ◽  
Neelambar R. Kaipatur ◽  
Rui Zheng ◽  
Edmond H. Lou ◽  
...  
Keyword(s):  
High Resolution ◽  
Phased Array ◽  
Ultrasonic Imaging ◽  
Periodontal Tissues

scholarly journals An Industrial B-Mode Phased Array Ultrasonic Imaging Reconstruction Algorithm Based on FRI Sampling

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Guangzhi Dai ◽  
Zhiyong He ◽  
Song Lin
Keyword(s):  
Phased Array ◽  
Simulation Experiment ◽  
Ultrasonic Imaging ◽  
Reconstruction Algorithm ◽  
Imaging Method ◽  
Sampling Point ◽  
Simple Circuit ◽  
Ultrasonic Signals ◽  
Imaging Algorithm ◽  
Imaging Reconstruction

Firstly, a novel FRI sampling model has been proposed according to the characteristics of ultrasonic signals. The model has the advantages such as good stability, strong antinoise ability, simple circuit implementation, and fewer preconditions, compared to the traditional methods. Then, in order to verify the validity of the sampling model, the method is applied to B-type ultrasonic imaging, and a B-type phased array ultrasonic imaging algorithm based on FRI sampling model is proposed. Finally, the algorithm simulation experiment is designed, and the results show that the sampling point required by the proposed FRI sampling model is only 0.1% of the traditional B-type phased array ultrasonic imaging method, and the sampling frequency of the proposed ultrasonic imaging algorithm is only 0.0077% of the traditional B-type ultrasonic imaging method. Additionally, the experiment result indicates that this algorithm is more applicable to phased array ultrasonic imaging than the SOS filter is.

Sampling phased array: a new technique for signal processing and ultrasonic imaging

2007 ◽  
Author(s):  
M. Kröning ◽  
A. Bulavinov ◽  
K. M. Reddy ◽  
L. von Bernus ◽  
D. Joneit
Keyword(s):  
Signal Processing ◽  
Phased Array ◽  
Ultrasonic Imaging ◽  
New Technique ◽  
A New Technique

Implementation of total focusing method for phased array ultrasonic imaging on FPGA

2015 ◽  
Author(s):  
JianQiang Guo ◽  
Xi Li ◽  
Xiaorong Gao ◽  
Zeyong Wang ◽  
Quanke Zhao
Keyword(s):  
Phased Array ◽  
Ultrasonic Imaging
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