Results 51 to 60 of about 61,227 (197)
Optimization of Pulsed Eddy Current Probes
, 1983 The objective of the ongoing work reported here is to optimize pulsed eddy current instrumentation for the detection of small flaws, specifically 250 × 125 pm crack-like defects in low conductivity materials such as titanium 6-4. Our approach parallels that employed in the optimization of continuous wave eddy current systems1,2 in that we seek first to
Beissner, R. +3 more
openaire +3 more sources
Faraday spectroscopy of atoms confined in a dark optical trap [PDF]
, 2008 We demonstrate Faraday spectroscopy with high duty cycle and sampling rate using atoms confined to a blue-detuned optical trap. Our trap consists of a crossed pair of high-charge-number hollow laser beams, which forms a dark, box-like potential.
D. McGloin +4 more
core +1 more source
Eddy Current System and Method for Crack Detection [PDF]
, 2012 An eddy current system and method enables detection of sub-surface damage in a cylindrical object. The invention incorporates a dual frequency, orthogonally wound eddy current probe mounted on a stepper motor-controlled scanning system.
Simpson, John W., Wincheski, Russell A.
core +1 more source
Electromagnetic Imaging with Atomic Magnetometers: A Novel Approach to Security and Surveillance [PDF]
, 2016 We describe our research programme on the use of atomic magnetometers to detect conductive objects via electromagnetic induction. The extreme sensitivity of atomic magnetometers at low frequencies, up to seven orders of magnitude higher than a coil-based
Deans, Cameron +3 more
core +2 more sources
A Uniform Eddy Current Probe with a Double-Excitation Coil for Flaw Detection on Aluminium Plates
Metals, 2019 In this present study, a new uniform eddy current (UEC) probe with a double-excitation coil and pancake orientation is proposed. It is confirmed that the probe generates a strong magnetic field induction that increases the intensity of uniform eddy ...
Ageng Sadnowo Repelianto +3 more
doaj +1 more source
Analysis of the Impact of Major Influencing Factors on the Waveform of the Surface Eddy Current Probe for Electroconductive Nonmagnetic Pipe Thickness [PDF]
, 2016 The results of computer simulation of interaction between the magnetic field of the surface eddy current probe and a conductive pipe performed in COMSOL Multiphysics were used to determine the dependences of the probe on major influencing factors: pipe ...
Belyankov, V. Y. +1 more
core +1 more source
Automated eddy current analysis of materials [PDF]
The use of eddy current techniques for characterizing flaws in graphite-based filament-wound cylindrical structures is described. A major emphasis was also placed upon incorporating artificial intelligence techniques into the signal analysis portion of ...
Workman, Gary L.
core +2 more sources
A pulsed eddy current system for flaw detection using an encircling coil on a steel pipe [PDF]
, 2014 Conventional eddy current techniques have been used to a great extent for detection of surface breaking defects in conductive materials. However, detection of sub-surface defects is limited due to skin effect phenomena and material properties.
Majidnia, S, Nilavalan, R, Rudlin, J
core
A Statistical Model for Eddy‐Current Signals from Steam Generator Tubes [PDF]
, 2004 We propose a model for characterizing amplitude and phase probability distributions of eddy‐current signals. The squared amplitudes and phases of the potential defect signals are modeled as independent, identically distributed (i.i.d.) random variables ...
Dogandžić, Aleksandar +2 more
core +3 more sources
Технічна електродинамікаThe aim of the paper is to develop a method for increasing the signal-to-noise ratio of eddy current measurement of geometric anomalies in static planar objects without actually eliminating the inherent effects of noise factors. This is achieved by means
В.Я. Гальченко +2 more
doaj +1 more source