Results 61 to 70 of about 406,343 (328)

Multiparameter Methods with Pulsed Eddy Currents

, 1987
Multiparameter methods have been used for a number of years to distinguish certain material properties from others that may be varying in the same eddy-current inspection. Usually the measured data are the magnitudes and phases of the eddy currents at several fixed frequencies. Alternatively, the necessary data can be obtained from pulsed eddy currents
Dodd, C., Deeds, W.
openaire   +3 more sources

Rapid Identification of Material Defects Based on Pulsed Multifrequency Eddy Current Testing and the k-Nearest Neighbor Method

Materials, 2023
The article discusses the utilization of Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) in conjunction with the supervised learning method for the purpose of estimating defect parameters in conductive materials.
J. Grochowalski, T. Chady
semanticscholar   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Using the Pulsed Eddy Current Techniques for Monitoring the Aircraft Structure Condition

Transactions on Aerospace Research, 2022
It is known that during operation, the aircraft construction materials are exposed to significant mechanical loads and changes in temperature for a very short period of time.
I. Lysenko, Y. Kuts, V. Uchanin, A. Protasov, V. Petryk, A. Alexiev   +5 more
semanticscholar   +1 more source

On–Off Switchable Micromotors for Use in Steerable Microvehicles

Advanced Robotics Research, EarlyView.
Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson, Eswaran Murugasen, Jose G. Martinez, Edwin W. H. Jager   +3 more
wiley   +1 more source

Quantitative Detection of Cracks in Steel Using Eddy Current Pulsed Thermography

Sensors, 2018
Small cracks are common defects in steel and often lead to catastrophic accidents in industrial applications. Various nondestructive testing methods have been investigated for crack detection; however, most current methods focus on qualitative crack ...
Zhanqun Shi, Xiaoyu Xu, Jiaojiao Ma, Dong Zhen, Hao Zhang   +4 more
doaj   +1 more source

Endoplasmic Reticulum Geometry Dictates Neuronal Bursting via Calcium Store Refill Rates and Exposes Selective Neuronal Vulnerability

Advanced Science, EarlyView.
The ER's continuous tubular network is maintained by ER‐shaping proteins whose mutation or dysregulation contributes to neurodegenerative diseases. Here, we show that ER morphology sets the speed of Ca2+ store replenishment between firing events. Disrupting ER continuity slows intra‐ER Ca2+ redistribution from extracellular refill (SOCE) sites, driving
Valentina Davi, Pierre Parutto, Yuyi Zhang, Tasuku Konno, Cecile Crapart, Raquel Pereira, John P. Franklin, Mosab Ali Awadelkareem, Daniel C Maddison, Michael J. Devine, Edgar R. Gomes, Joseph Chambers, Elena Koslover, Edward Avezov   +13 more
wiley   +1 more source

Pulsed Excitation in Eddy Current Non-Destructive Testing of Conductive Materials

Advances in Electrical and Electronic Engineering, 2008
The paper deals with eddy current non-destructive testing of conductive materials. Basic principle of the method is explained. Two types of eddy current excitation, the harmonic one and the pulsed one, are discussed.
Milan Smetana, Tatiana Strapacova, Ladislav Janousek   +2 more
doaj  

Numerically simulated exposure of children and adults to pulsed gradient fields in MRI [PDF]

, 2016
PurposeTo determine exposure to gradient switching fields of adults and children in a magnetic resonance imaging (MRI) scanner by evaluating internal electric fields within realistic models of adult male, adult female, and child inside transverse and ...
Bakker, Bencsik, Caputa, Christ, Crozier, ICNIRP, ICNIRP (International Commission on Non-ionising Radiation Protection), Liu, Mao, Nyenhuis, Poole, Reilly, Samoudi, Samoudi, Santis, Schaefer, Schenck, Schmid, Shellock, Smythe, So, Stuchly, Zhao   +22 more
core   +2 more sources

Simple eddy current compensation by additional gradient pulses [PDF]

Concepts in Magnetic Resonance Part A, 2018
AbstractA simple compensation concept for eddy currents generated by additional gradient pulses is presented. Similar to other pre‐emphasis schemes, the gradient pulse shape is overemphasized in the opposite way of the effect of the eddy currents to compensate for the deviations from the anticipated (rectangular) shape.
Benjamin Niederländer, Peter Blümler
openaire   +1 more source