588 resources related to Non-destructive Evaluation
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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE
ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.
The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.
The 2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2020) will be held in Metro Toronto Convention Centre (MTCC), Toronto, Ontario, Canada. SMC 2020 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report most recent innovations and developments, summarize state-of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems, and cybernetics. Advances in these fields have increasing importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience and thereby improve quality of life. Papers related to the conference theme are solicited, including theories, methodologies, and emerging applications. Contributions to theory and practice, including but not limited to the following technical areas, are invited.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.
IEE Colloquium on Non-Destructive Evaluation, 1988
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2017
Ultrasound is mainly used in Non-Destructive Evaluation of industrial structures and non-invasive structures and non-invasive diagnostics in medicine, owing to attractive features such as absence of radiation and affordability of associated electronics. Recently there has been much interest in improving the resolution of ultrasonic evaluation using various metamaterials concepts. Phononic crystals and resonant structures have demonstrated the negative refraction and ...
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011
Non-destructive evaluation (NDE) is an effective and reasonable technology for utilization in wooden material. Facing the defects of wooden material, the effective NDE appears practically significant for protecting wood structures. Major NDE techniques and equipments applied in wood structures detection were systematically summarized. Then State of main researches on NDE used in wooden material was reviewed, including the imaging technique, ...
2014 IEEE International Ultrasonics Symposium, 2014
In this paper, we present a rapid technique to reduce the speckle noise in ultrasonic non-destructive evaluation (NDE) and enhance the image quality using matched filters. This method implicitly explores the signatures and profiles of echoes from legitimate defects and echoes from random reflectors, uses the temporal and spectral distinction to design the filter, and utilizes a particle swarm optimization ...
2017 18th International Conference on Computational Problems of Electrical Engineering (CPEE), 2017
Swept frequency eddy-current non-destructive evaluation of defects is investigated in this paper. Influence of crack geometry on transmission frequency characteristics is experimentally studied. Plate specimens having electro-discharge machined (EDM) slits of various lengths and depths are inspected using an eddy-current probe. The probe is fixed at certain positions during the inspection. Frequency of the exciting signal is changed in a ...
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 1 of 7 - Gordon Donaldson: A Memory - part I - John Clarke
High Magnetic Field Science and its Application in the US - ASC-2014 Plenary series - 10 of 13 - Friday 2014/8/15
Micro-Apps 2013: Rapid Simulation of Large Phased Array T/R Module Networks
IMS 2011 Microapps - Simulation and Evaluation of Communications Systems in Conformance With Third- and Fourth-Generation Wireless Standards
Injury Evaluation of Human-Robot Impacts
Improved Deep Neural Network Hardware Accelerators Based on Non-Volatile-Memory: the Local Gains Technique: IEEE Rebooting Computing 2017
Bill Woodward presents NEEDLES: 2016 End to End Trust and Security Workshop for the Internet of Things
Fully-Integrated Non-Magnetic 180nm SOI Circulator - Aravind Nagulu - RFIC Showcase 2018
Dynamic Pattern Recognition and its Application on Non-Stationary Systems
Validating Cyber-Physical Energy Systems, Part 3: IECON 2018
Evaluation of Circuit Loading: NFPA Fire Protection Research Foundation
Co-Design of Algorithms & Hardware for DNNs - Vivienne Sze - LPIRC 2019
Flight Stability in Aerial Redundant Manipulators
The Fundamentals of Battery Charger Design
Brooklyn 5G Summit 2014: Dr. Andrea Goldsmith on 5G and Beyond
Advances in Kernel Methods
Large UAS Support: Non Terrestrial Networks - Dallas Brooks - B5GS 2019
AM37x Sitara EVM Demonstration
Brooklyn 5G - 2015 - Dr. Amitabha Ghosh & Dr. Timothy A. Thomas - 5G Channel Modeling from 6 to 100 GHz: Critical Modeling Aspects and Their Effect on System Design and Performance
Ultrasound is mainly used in Non-Destructive Evaluation of industrial structures and non-invasive structures and non-invasive diagnostics in medicine, owing to attractive features such as absence of radiation and affordability of associated electronics. Recently there has been much interest in improving the resolution of ultrasonic evaluation using various metamaterials concepts. Phononic crystals and resonant structures have demonstrated the negative refraction and focusing, at different scales. The drawbacks of these are complex design and manufacturing constraints. This paper studies the potential of Topographical Waveguides (TW) for improving the resolution of Ultrasonic inspection, by manipulating the wave field using backward propagating waves. The existence of backward waves in elastic wave guides such as plates, is well known from literature. Due to topographical change, the guided elastic waves in plates, undergo refraction and mode conversion; the forward propagating wave gets converted to backward wave. The phase and group velocity of backward propagating waves are antiparallel. Recent research has studied the phenomenon of anomalous refraction and mode focusing of Zero Group Velocity (ZGV) modes in topographies. The ZGV in thin plates occurs at a specific point, where the group velocity goes to zero while the phase velocity remains finite. At the same wave number the forward and backward propagating waves will interfere, and at that point group velocity becomes zero. This work studies the feasibility of TW lenses for improved resolution of Ultrasonic NDE by using ZGV mode. An aluminium plate, with a step thickness change is considered to show the concept of ZGV. Finite Element (FE) simulation results are presented. Experiments are carried over to validate.
Non-destructive evaluation (NDE) is an effective and reasonable technology for utilization in wooden material. Facing the defects of wooden material, the effective NDE appears practically significant for protecting wood structures. Major NDE techniques and equipments applied in wood structures detection were systematically summarized. Then State of main researches on NDE used in wooden material was reviewed, including the imaging technique, the signal technique and the probe technique. The shortcomings of NDE used in wood structures were pointed out briefly. Quantitative analysis on the relationship between mechanical strength of wood and results of non-destructive testing were found to be insufficient. At last, the development tendency of NDE is forecasted.
In this paper, we present a rapid technique to reduce the speckle noise in ultrasonic non-destructive evaluation (NDE) and enhance the image quality using matched filters. This method implicitly explores the signatures and profiles of echoes from legitimate defects and echoes from random reflectors, uses the temporal and spectral distinction to design the filter, and utilizes a particle swarm optimization (PSO) paradigm to optimize the filter parameters with an objective to maximize the output signal-to-noise ratio (SNR). An optimized matched filter approximating the desired defect echoes is then applied to the received A-scan waveforms. Experiments with a 128-element 5MHz transducer on a mild steel sample are conducted. It has been demonstrated that clutter is significantly reduced and the image SNR is improved by more than 20dB when the matched filter is applied to A-scan waveforms prior to image formation. Given the fact that the matched filter can be implemented in real- time, the great performance advantages are obtained with extremely low extra computational cost.
Swept frequency eddy-current non-destructive evaluation of defects is investigated in this paper. Influence of crack geometry on transmission frequency characteristics is experimentally studied. Plate specimens having electro-discharge machined (EDM) slits of various lengths and depths are inspected using an eddy-current probe. The probe is fixed at certain positions during the inspection. Frequency of the exciting signal is changed in a defined range and frequency transfer functions are studied. The presented results clearly show that the frequency transfer functions depend on the slit's dimensions. These unique results bring new insight into possible employment of fixed eddy current sensors driven with swept frequency signal for crack's evaluation.
In non-destructive evaluation (NDE) applications, most materials like concrete, stainless steel and carbon-reinforced composites used extensively in industries and civil engineering exhibit heterogeneous internal structure. When inspected using ultrasound with the conventional delay-and-sum imaging, the signals from defects are significantly corrupted by the echoes form randomly distributed scatterers, even defects that are much larger than these random reflectors are difficult to detect. We propose to apply adaptive beamforming to the received data samples to reduce the interference and clutter noise. Beamforming is to manipulate the array beam pattern by appropriately weighting the per-element delayed data samples prior to summing them. The adaptive weights are computed from the statistical analysis of the data samples. This delay-weight-and-sum process can be explained as applying a lateral spatial filter to the signals across the probe aperture. Simulations show that the background noise level is reduced by 30dB when adaptive beamforming is applied. In experiments inspecting a steel block with side- drilled holes, good quantitative agreement with the simulation results is demonstrated.
This paper presents a non-destructive evaluation study on a radiator with cooling fins as a kind of complex shaped specimen. An eddy current testing method, namely multi-frequency excitation and spectrogram method, was employed to detect a removal of radiator cooling fin. Experimental results brought remarkable signal when a fin was removed. Furthermore, the authors discuss the relation between the fin signal and specimen thickness, and concludes the availability for the estimation of thickness of radiator structures.
This study presents the development of a non-destructive method of detecting stress as a function of depth, useful for inspecting steel structures and components without the need to calibrate against x-ray diffraction data. A new frequency-dependent model for Barkhausen emissions based on the attenuation of emission with frequency and distance is used to extract depth-dependent stress information. Controlled, uniform stresses are induced in an ASTM A36 steel specimen, which are then used as a reference to obtain stress-voltage calibration profiles. An inversion process can then be employed to assess specimens of unknown stress states, by using the previously calculated profiles. The slope of the calibration profiles is found to vary with depth, and a simple computer algorithm may be used to extract stresses at different depths by using an averaging method.
This paper describes a dedicated architecture for real-time imaging using the Total Focusing Method (TFM) and an advanced acquisition technique called the Full Matrix Capture (FMC). The architecture was entirely described using VHDL language and implemented on a V5FX70T Xilinx FPGA for the control part and a V5SX95T Xilinx FPGA for the acquisition part. The architecture is able to perform real-time FMC-TFM imaging at a maximum frame rate of 73 frames/s and a maximum resolution of 128×128 pixels, which is sufficient as a performance for a real-time imaging with a good characterization of defects in the non destructive evaluation context.
In this work we present non-destructive evaluation measurements on fiber/metal laminate specimen by using eddy current techniques employing HTc SQUID (superconductive quantum interference device) and giant magneto-resistive (GMR) sensors. Our aim is to compare the performance and the capability of HTc SQUID and GMR sensors to detect the presence of damage inside FML composite materials. Experimental results concerning the detection of artificial defects in aeronautical structures with high magnetic sensitivity by using HTc SQUID, and with high spatial resolution using GMR, will be presented and discussed.
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Lawrence Livermore National Laboratory
Nondestructive Evaluation - Postdoctoral Researcher
Lawrence Livermore National Laboratory
Signal and Image Processing Engineer
Lawrence Livermore National Laboratory
Lawrence Livermore National Laboratory