[PDF] Top 20 Ultrasonic non destructive testing based on sparse deconvolution
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Ultrasonic non destructive testing based on sparse deconvolution
... Introduction Non-destructive testing by pulse-echo ultrasound allows the inspection of a complex object and in particular, the detection and localization of inhomogeneities and ...the ... Voir le document complet
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RESOLUTION ENHANCEMENT OF ULTRASONIC SIGNALS BY UP-SAMPLED SPARSE DECONVOLUTION
... continuous parameters. Cross-correlation methods [1] are computationally simple but show poor performance when echoes overlap. The finite rate of innovation theory [2] of- fers exact reconstruction provided that the ... Voir le document complet
6
Plane Wave Imaging for ultrasonic non-destructive testing: Generalization to multimodal imaging
... array; Non-destructive testing; Ultrasonic imaging; Defect characterization ...Introduction Ultrasonic transducer arrays are more and more used for industrial ... Voir le document complet
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Modeling of diffraction effects for specimen echoes simulations in ultrasonic Non-Destructive Testing (NDT)
... be based on GTD or UTD [Uniform Theory of Diffraction (see chapter 2 )] [ 58 ], UTD being a uniform correction of GTD, which is valid inside penumbras of incident or reflected rays as well as outside [ 12 ...in ... Voir le document complet
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Non-destructive diagnosis of the integrity of green wood using ultrasonic computed tomography
... Abstract: Ultrasonic computed tomography (UCT) was used to assess the integrity of green ...the ultrasonic wave propagation is greatly perturbed by physical processes such as the refraction, attenuation and ... Voir le document complet
5
The detection of aeronautical defects in-situ on composite structures using Non Destructive Testing
... 3. Non destructive methods 3.1. Ultrasonic Testing Ultrasonic Testing (UT) is commonly used in Non Destructive ...is based on high frequency wave ...possible ... Voir le document complet
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In-situ non destructive testing of cementitous materials via embedded ultrasonic transducers made up of carbon nanotubes
... 2 Durability assessment via porosity evaluation 2.1 A performance-based durability approach Durability aims at preventing any kind of degradations likely to hinder the regular use of infrastructures and buildings. ... Voir le document complet
7
Non-destructive quality control of carbon anodes using modal analysis, acousto-ultrasonic and latent variable methods
... requires testing all or the majority of the manufactured ...strategy based on core sampling can, at best, evaluate the properties of about 1% of the manufactured anodes due to the costly, time-consuming, ... Voir le document complet
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The detection of aeronautical defects in-situ on composite structures using Non Destructive Testing
... 3. Non destructive methods 3.1. Ultrasonic Testing Ultrasonic Testing (UT) is commonly used in Non Destructive ...is based on high frequency wave ...possible ... Voir le document complet
10
Evaluation of concrete structures by combining non-destructive testing methods (SENSO project)
... first based on the analysis of the different levels of variability and the second based on the analysis of the multi-linear regressions, were confronted with the application of selection ...for ... Voir le document complet
9
Fast non-stationary deconvolution of ultrasonic beamformed images for nondestructive testing
... NDT ultrasonic imaging M ODERN ultrasonic array probes contain a large number of transducers, offering high performance in terms of flexibility, speed and quality of ...of non- destructive ... Voir le document complet
11
THz QCL-based active imaging dedicated to non-destructive testing of composite materials used in aeronautics
... 5. A. Redo-Sanchez, N. Karpowicz, J. Xu, and X.-C. Zhang, “Damage and defect inspection with terahertz waves,” in 4th International Workshop on Ultrasonic and Adavanced methods for nondestructive Testing ... Voir le document complet
9
High-resolution deconvolution applied to non destructive testing
... Ultrasonic non destructive testing consists in emitting an acoustic wave in a material and then locating the reflected echoes produced by impedance changes, due to flaws or medium ...echoes. ... Voir le document complet
7
Sparse grids for eddy-current non-destructive testing
... A rich family of surrogate models consists in data-fitting: an interpolation and/or regression is established based on a pre-calculated set of simulation results, i.e., samples. Once the sample set is obtained, ... Voir le document complet
3
Interactive Ultrasonic Field Simulation For Non-Destructive Testing
... method based on fast ray tracing has to be devel- ...an ultrasonic raytracer based on Intel Embree on CPU or Nvida OptiX on GPU should allow us to reach the necessary level of per- formance required ... Voir le document complet
3
High performances simulation of ultrasonic fields for Non Destructive Testing
... In Figure 15, those results are presented in graphs one for each step. It has to be noted that the normalized performances of the streaming multiprocessors of those GPUs are roughly the same for a given frequency and ... Voir le document complet
10
Evaluation of chloride contamination in concrete using electromagnetic non-destructive testing methods
... the destructive characterization of chloride content is now fully applied all over the world, it is widely recognized that the procedure is cumbersome and requires a lot of time, and that any ... Voir le document complet
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Augmented Reality Application in Manufacturing Industry: Maintenance and Non-destructive Testing (NDT) Use Cases
... destroy or affect its properties. NDT is used to detect defects within a component and determine whether the component is damaged or in need of repair. Ultrasonic transducers are often used for NDT of industrial ... Voir le document complet
13
The Non Degenerate Source Condition: Support Robustness for Discrete and Continuous Sparse Deconvolution
... the deconvolution prob- lem. We shed light on the Non Degenerate Source Condition, a property which yields support robustness for both the continuous and discrete ... Voir le document complet
4
en fr Optimised Signal Processing for Nonlinear Ultrasonic Nondestructive Testing of Complex Materials and Biological Tissues Traitement du signal optimisé pour l’évaluation non linéaire non destructive des matériaux complexes et des tissus biologiques
... contrôle non destructif (CND) des matériaux complexes et des tissus ...élastiques non linéaires ...la non vérification du principe de superposition induite par la nonlinéarité locale, cette op- ... Voir le document complet
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