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Lamb mode diversity imaging for non-destructive testing of plate-like structures
(2013-07-18)
Several Lamb wave modes can be coupled to a particular structure, depending on its geometry and transducer used to generate the guided waves. Each Lamb mode interacts in a particular form with different types of defects, ...
Lamb mode diversity imaging for non-destructive testing of plate-like structures
(2013-07-18)
Several Lamb wave modes can be coupled to a particular structure, depending on its geometry and transducer used to generate the guided waves. Each Lamb mode interacts in a particular form with different types of defects, ...
Technique to combine images produced by different propagation modes of guided waves for damage detection and contrast improvement in plate-like structures
(2012-12-01)
This paper describes an image compounding technique based on the use of different apodization functions, the evaluation of the signals phases and information from the interaction of different propagation modes of Lamb waves ...
Technique to combine images produced by different propagation modes of guided waves for damage detection and contrast improvement in plate-like structures
(2012-12-01)
This paper describes an image compounding technique based on the use of different apodization functions, the evaluation of the signals phases and information from the interaction of different propagation modes of Lamb waves ...
Micro fabricação de placas óticas birrefringentes e suas aplicações
(Universidade Federal de Minas GeraisUFMG, 2016-09-30)
We present a method for the fabrication and characterization of optical elements with nanometric periodic structures. They were created using electron beam lithography, resulting in an anisotropy of the refractive index, ...
Syntheses of bismuth titanate templates obtained by the molten salt method
(2013-09-01)
Bismuth titanate templates (Bi4Ti3O12) were synthesized by the molten salt method in Na2SO4 and K2SO4 fluxes, using an amorphous Bi4Ti 3O12 precursor and a mechanically mixed Bi 2O3+TiO2 mixture as the starting materials. ...
Syntheses of bismuth titanate templates obtained by the molten salt method
(2013-09-01)
Bismuth titanate templates (Bi4Ti3O12) were synthesized by the molten salt method in Na2SO4 and K2SO4 fluxes, using an amorphous Bi4Ti 3O12 precursor and a mechanically mixed Bi 2O3+TiO2 mixture as the starting materials. ...