Results 31 to 40 of about 7,225,697 (246)

MOSAIC: An integrated ultrasonic 2-D array system [PDF]

, 2007
An investigation into the development of an ultrasound imaging system capable of customization for multiple applications via the tessellation of in-system programmable scalable modules, or tiles, is presented here.
D.R.S. Cumming, S. Triger, J.-F. Saillant, Saillant, J-F., J. Wallace, S. Cochran, Wallace, J., Cumming, D.R.S., Triger, S., Cochran, S.   +9 more
core   +1 more source

Enhanced composite plate impact damage detection and characterisation using X-Ray refraction and scattering contrast combined with ultrasonic imaging

, 2020
Ultrasonic imaging and radiography are widely used in the aerospace industry for non-destructive evaluation of damage in fibre-reinforced composites.
D. Shoukroun, L. Massimi, F. Iacoviello, M. Endrizzi, D. Bate, A. Olivo, P. Fromme   +6 more
semanticscholar   +1 more source

A modular FPGA-based ultrasonic array system for applications including non-destructive testing [PDF]

, 2008
This paper reports work aimed at the development of an ultrasonic imaging system comprising modular, reprogrammable building blocks, or tiles, which can be customised for multiple applications, including and within non-destructive testing (NDT), by the ...
Afroukh, F., Saillant, J-F., Wallace, J., Cumming, D.R.S., Triger, S., Wang, L., Cochran, S.   +6 more
core   +1 more source

Highly-Sensitive and Frequency-Selective Imaging of Defects via Local Defect Resonance [PDF]

, 2014
In this paper, a consistent way to enhance acoustic, optical and thermal defect responses is suggested by using selective ultrasonic activation of defects based on the concept of local defect resonance (LDR).
Solodov Igor, Gulnizkij Nikolay, Rahammer Markus   +2 more
core   +1 more source

A Novel Relative Position Estimation Method for Capsule Robot Moving in Gastrointestinal Tract

Sensors, 2019
Recently, a variety of positioning and tracking methods have been proposed for capsule robots moving in the gastrointestinal (GI) tract to provide real-time unobstructed spatial pose results.
Min Wang, Qinyuan Shi, Shuang Song, Chao Hu, Max Q.-H. Meng   +4 more
doaj   +1 more source

A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]

, 2014
An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
core   +1 more source

Early Diagnosis of Abnormal Left Ventricular Systolic Functions of Rare Pathogenic Titin Mutation Gene Carriers in FHCM by Three-Dimensional Speckle Tracking Echocardiography Combined with Gene Detection

International Journal of Clinical Practice, 2022
Objective. This study aimed to explore the early diagnosis of abnormal left ventricular systolic function of rare pathogenic titin (TTN) mutation gene carriers in familial hypertrophic cardiomyopathy (FHCM) by three-dimensional speckle tracking ...
Xiang-hong Luo, Rui Zhu, Qian Chen, Pei-hong Shi, Li-sha Na   +4 more
doaj   +1 more source

Three-Dimensional Contouring Control: A Task Polar Coordinate Frame Approach

IEEE Access, 2019
In order to characterize the surface quality of machined parts, researchers have proposed a family of coordinate transformation-based approaches to deal with the contour following problem, which alleviate the computational consumption of calculating the ...
Ran Shi, Yunjiang Lou
doaj   +1 more source

Application of conformal map theory for design of 2-D ultrasonic array structure for ndt imaging application : a feasibility study

, 2014
Two-dimensional ultrasonic phased arrays are becoming increasingly popular in nondestructive evaluation (NDE). Sparse array element configurations are required to fully exploit the potential benefits of 2-D phased arrays. This paper applies the conformal
Ramadas, Sivaram Nishal, Gachagan, Anthony, Dziewierz, Jerzy, Jackson, Joseph, O'Leary, Richard   +4 more
core   +1 more source

Rotational-invariant speckle-scanning ultrasonography through thick bones

Scientific Reports, 2021
Ultrasonography is a major medical imaging technique that has been broadly applied in many disease diagnoses. However, due to strong aberration and scattering in the human skull, high-resolution transcranial ultrasonic imaging remains a grand challenge ...
Siyi Liang, Lidai Wang
doaj   +1 more source