Investigation of synthetic aperture methods in ultrasound surface imaging using elementary surface types [PDF]
, 2016 Synthetic aperture imaging methods have been employed widely in recent research in non-destructive testing (NDT), but uptake has been more limited in medical ultrasound imaging.
Kerr, W., Pierce, S. G., Rowe, P.
core +1 more source
Measuring Cerebral Activation From fNIRS Signals: An Approach Based on Compressive Sensing and Taylor-Fourier Model [PDF]
, 2016 Functional near-infrared spectroscopy (fNIRS) is a noninvasive and portable neuroimaging technique that uses NIR light to monitor cerebral activity by the so-called haemodynamic responses (HRs).
Brigadoi, Sabrina +4 more
core +1 more source
Phased array probe for the inspection of large steel forgings
Cogent Engineering, 2021 Reliable inspection of large steel forgings is a significant problem across multiple industries. When the dimensions of forgings are at least 1000 mm in each direction, ultrasonic phased array inspection becomes difficult because conventional probes are ...
Frederic Dupont-Marillia +2 more
doaj +1 more source
Three-Dimensional Quantification of Cellular Traction Forces and Mechanosensing of Thin Substrata by Fourier Traction Force Microscopy [PDF]
, 2013 We introduce a novel three-dimensional (3D) traction force microscopy (TFM) method motivated by the recent discovery that cells adhering on plane surfaces exert both in-plane and out-of-plane traction stresses.
Alonso-Latorre, Baldomero +6 more
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Sensors, 2019 Ultrasonic arrays have been investigated for inspecting the quality of special materials. Unfortunately, non-destructive testing and evaluation (NDT&E) of internal defects in additive manufacturing (AM) materials are difficult due to the anisotropy ...
Wentao Li, Zhenggan Zhou, Yang Li
doaj +1 more source
Anisotropy Corrected FMC/TFM Based Phased Array Ultrasonic Imaging in an Austenitic Buttering Layer
Applied Sciences, 2023 For the narrow gap dissimilar weld between a ferritic steel and a nickel base superalloy, a nickel base alloy buttering layer is deposited on the ferritic steel side as an intermediate layer. The bonding between the buttering layer and the ferritic steel
S. Ponseenivasan +2 more
doaj +1 more source
A Robust Approach to Optimal Matched Filter Design in Ultrasonic Non-Destructive Evaluation (NDE) [PDF]
, 2016 The matched filter was demonstrated to be a powerful yet efficient technique to enhance defect detection and imaging in ultrasonic non-destructive evaluation (NDE) of coarse grain materials, provided that the filter was properly designed and optimized ...
Hayward, Gordon, Li, Minghui
core +3 more sources
Adapting the full matrix capture and the total focusing method to laser ultrasonics for remote non destructive testing [PDF]
, 2017 Laser Induced Phased Arrays (LIPAs) use post processing to focus and steer the laser generated and detected ultrasonic beam, synthesizing a phased array.
Clark, Matt +2 more
core +1 more source
Rician Beamforming: Despeckle Method via Coarray Projection Stochastic Analysis
Applied Sciences, 2020 Current computation capabilities normal, Delay and Sum (DAS) and Total Focusing Method (TFM) allow new definitions for beamformers. In this paper, a new beamforming method is proposed. It exploits diversity across pixel data after focusing process.
Virginia Yagüe-Jiménez +3 more
doaj +1 more source
Laser induced ultrasonic phased array using Full Matrix Capture data acquisition and Total Focusing Method [PDF]
, 2015 Laser based ultrasound is a technique where a short pulsed laser is used to generate ultrasound and optical interferometry is used in order to detect the signal.
Clark, Matt +2 more
core +4 more sources