Now showing items 31-40 of 457
Avaliação do módulo de elasticidade da madeira com uso de método não-destrutivo de vibração transversal
(Associação Brasileira de Engenharia Agrícola (SBEA), 2005-08-01)
Numerosas pesquisas têm estudado os métodos não-destrutivos de avaliação de materiais e sua aplicação àqueles de matrizes complexas, como é o caso da madeira. Um dos primeiros métodos não-destrutivos investigados para ...
3D NON-DESTRUCTIVE EVALUATION TECHNIQUES FOR WOOD ANALYSIS
(IGI GLOBAL, 2014)
Non-destructive testing techniques allow the analysis of wood characteristics without altering its end-use capabilities. Wood morphology, wood density, moisture content, and wood decay are some of the features detectable ...
DETERMINATION OF THE E/G RATIO OF WOOD LOGS USING TRANSVERSE VIBRATION
(SLOVAK FOREST PRODUCTS RESEARCH INSTBRATISLAVA, 2012)
The Bernoulli's model for vibration of beams is often used to make predictions of bending modulus of elasticity when using dynamic tests. However this model ignores the rotary inertia and shear. Such effects can be added ...
Steel bars identification in reinforced concrete structures by using ANN and magnetic fields
This work proposes a methodology for non destructive testing (NDT) of reinforced concrete structures, using superficial magnetic fields and artificial neural networks, in order to identify the size and position of steel ...
Study of the influence of simultaneous variation of magnetic material microstructural features on domain wall dynamics
(ELSEVIER SCIENCE BV, 2010)
The magnetic Barkhausen noise (MBN) is a phenomenon sensitive to several kinds of magnetic material microstructure changes, as well as to variations in material plastic deformation and stress. This fact stimulates the ...
FINITE ELEMENT SIMULATIONS FOR THE COMPREHENSION OF PHYSICAL PHENOMENA INVOLVED IN ELECTRIC IMPEDANCE TOMOGRAPHY OF MASONRY STRUCTURES
(Dolnoslaskie Wydawnictwo Edukacyjne-dwe, 2015)
Characterization of drying paint coatings by dynamic speckle and holographic interferometry measurements
(Optical Society of America, 2016-05)
In this work we implemented dynamic speckle and holographic interferometry techniques to characterize the drying process of solvent-based paint coatings. We propose a simple way to estimate drying time by measuring speckle ...
Classificação de peças de madeira serrada de dimensões estruturais de Eucalyptus sp com uso de ensaios não-destrutivo
(Universidade Estadual Paulista (UNESP), 2014)
ANALYSIS OF THE NATURAL VIBRATION FREQUENCY TEST METHOD TO OBTAIN THE MODULUS OF ELASTICITY OF WOOD STRUCTURAL COMPONENTS
(UNIV FEDERAL VICOSAVICOSA, 2012)
There are several techniques to characterize the elastic modulus of wood and those currently using the natural frequencies of vibration stand out as they are non-destructive techniques, producing results that can be repeated ...