Results 91 to 100 of about 475,981 (282)
Nondestructive Evaluation of Solids Based on Deformation Wave Theory
Applied Sciences, 2020 The application of a recent field theory of deformation and fracture to nondestructive testing (NDT) is discussed. Based on the principle known as the symmetry of physical laws, the present field theory formulates all stages of deformation including the ...
Sanichiro Yoshida +2 more
doaj +1 more source
Residual Stress Measurement by Electronic Speckle Pattern Interferometry [PDF]
, 2007 The existence of residual stresses affects both safety and lifetime. Thus the determination of these stresses is very important. The ESPI (Electronic Speckle Pattern Interferometry) and Hole- Drilling combined method seems to be an appropriate technique ...
Holý,S., Krempaszky, C., ŠSedivý, O.
core
The Plant Phenome Journal, Volume 7, Issue 1, December 2024.Abstract Over the last decade, the use of unmanned aerial vehicles (UAVs) for plant phenotyping and field crop monitoring has significantly evolved and expanded. These technologies have been particularly valuable for monitoring crop growth and health and for managing abiotic and biotic stresses such as drought, fertilization deficiencies, disease, and ...
Boubacar Gano +5 more
wiley +1 more source
VibrationThe present study encompasses a thorough analysis of the vibrations in a splash musical cymbal. The analysis is performed using a hybrid methodology that combines experimental measurements with parametric computer-aided design and finite element method ...
Spyros Brezas +6 more
doaj +1 more source
Application of the DIC Technique to Remote Control of the Hydraulic Load System
Remote Sensing, 2020 Displacements or deformations of materials or structures are measured with linear variable differential transducers (LVDT), fibre optic sensors, laser sensors, and confocal sensor systems, while strains are measured with electro-resistant tensometers or ...
Radosław Jasiński +2 more
doaj +1 more source
Diffraction-limited bispectrum speckle interferometry and speckle polarimetry of the young bipolar outflow source S140 IRS1 [PDF]
arXiv, 2000 We present bispectrum speckle interferometry and speckle polarimetry of the deeply embedded infrared bipolar outflow source S140 IRS1, a massive protostellar object in the L1204 molecular cloud. Using the SAO 6 m telescope, we obtained 280 mas resolution polarization maps of S140 IRS1 as well as a K-band image with diffraction-limited resolution lambda/
arxiv
Topological transformations of speckles
, 2019 Deterministic control of coherent random light is highly important for information transmission through complex media. However, only a few simple speckle transformations can be achieved through diffusers without prior characterization. As recently shown,
Claude, Ferdinand +3 more
core +1 more source
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2564-2580, December 2024.Synthetic Aperture Radar (SAR) Coherent Change Detection (CCD) allows for the detection of very small scene changes. For space‐based platforms, rapid repeat passes may have significant differences, or baselines, which can lead to decorrelations. This work investigates the sources and levels of incoherence associated with bistatic SAR imagery using ...
Alexander Hagelberg +2 more
wiley +1 more source
Nova Scientia, 2014 La ventaja del uso de las técnicas interferométricas basados en el patrón de moteado ESPI (electronic speckle pattern interferometry) es única ya que se pueden hacer mediciones muy precisas de los campos de desplazamientos que ocurren en la superficie de
Jorge Ramón Parra-Michel +1 more
doaj +1 more source
Granularité laser et interférences de speckles [PDF]
Bulletin de l'Union des Physiciens 101, 899(1) (2007) 1101-1121, 2009 In this paper we introduce experimentally the phenomenon of speckle and its interferometric applications. With the popularization of CCD sensors and webcams, it is now easy to acquire speckles patterns, to reduce them and exploit them. The material used here is what we could find easily in high schools.
arxiv