Results 341 to 350 of about 1,899,314 (382)

Ray Tracing Method for Ultrasonic Array Imaging of CFRP Corner Part using Homogenization Method

, 2021
Cao Huanqing, Shifeng Guo, Zhang Shuxiao, Yinfei Xie, Wei Feng   +4 more
semanticscholar   +1 more source

Dimensionality reduction of ultrasonic array data for characterization of inclined defects based on supervised locality preserving projection.

Ultrasonics, 2021
L. Bai, Minkang Liu, Nanxin Liu, Xin Su, Fuyao Lai, Jianfeng Xu   +5 more
semanticscholar   +1 more source

High-resolution beam forming for ultrasonic arrays

IEEE Transactions on Robotics and Automation, 1996
Array processing techniques are common in radar, sonar, and medical ultrasound. However, little work has been reported on the use of array processing with airborne ultrasound. This paper describes the application of array beam forming to airborne ultrasound.
Philip Webb, Catherine Wykes
openaire   +1 more source

Sectorial Plane Wave Imaging for Ultrasonic Array-Based Angle Beam Inspection

Journal of nondestructive evaluation, 2021
L. Pillarisetti, G. Raju, Anandamurugan Subramanian   +2 more
semanticscholar   +1 more source

An ultrasonic range sensor array for a robotic fingertip

Sensors and Actuators, 1989
Abstract A multielement ultrasonic (US) ranging array has been realized for mounting on an articulated robotic finger. The ranging system consists of concave piezoelectric polymer-based US transducers arranged in a three-dimensional (3D) `lsfoveal'rs disposition so that the transducer radius decreases and the working frequency increases from the base
A. FIORILLO, ALLOTTA, BENEDETTO, P. DARIO, R. FRANCESCONI   +3 more
openaire   +2 more sources

Comparative Study on Using Ultrasonic Array-Based Techniques for Detection of Flaws in Thick and Attenuating Materials

Transactions of the Indian Institute of Metals, 2021
Sumana, S. Ponseenivasan, Anish Kumar
semanticscholar   +1 more source

Measurement Models for Ultrasonic Arrays

2014
In the previous two chapters we showed how the response of a pair of send-receive array elements can be modeled in terms of two components: (1) a system function that describes all the electrical and electromechanical parts of the elements and their driving/receiving sub-systems, and (2) an acoustic/elastic transfer function that describes all the ...
openaire   +1 more source

An Ultrasonic Wheel-Array Probe

AIP Conference Proceedings, 2004
This paper describes the development and modeling of an ultrasonic array wheel probe scanning system. The system operates at 10 MHz using a 64 element array transducer which is 50 mm in length and located in a fluid filled wheel. The wheel is coupled to the test structure dry, or with a small amount of liquid couplant. When the wheel is rolled over the
openaire   +1 more source

Calibration of ultrasonic phased arrays for industrial applications

2017 IEEE SENSORS, 2017
This paper investigates the consistency in phased array element performance by extracting information from the Full Matrix Capture (FMC) of a reflection from a planar interface. The purpose of this work is to generate a robust methodology for tracking phased array performance over time, therefore, ensuring the reliability of measured data.
Marcus Ingram, Anthony Gachagan, Anthony J. Mulholland, Alison Nordon, Jerzy Dziewierz, Martin Hegarty, Edo Becker   +6 more
openaire   +1 more source

FUNDAMENTALS OF ULTRASONIC PHASED ARRAYS

Modern Physics Letters B, 2008
It is shown that the wave field of an ultrasonic linear array is closely related to that of an equivalent single element transducer. Using this relationship, it is demonstrated how one can construct a simple and efficient ultrasonic beam model for the wave field of a steered linear array.
openaire   +1 more source