Results 51 to 60 of about 190,665 (333)
Advanced holographic nondestructive testing system for residual stress analysis [PDF]
Proceedings of SPIE 3687 (1999), pages 73-81, 2013 The design and operating of a portable holographic interferometer for residual stress analysis by creating a small scratch along with a new mathematical algorithm of calculations are discussed. Preliminary data of the stress investigations on aluminum and steel alloys have been obtained by the automatic processing of the interference pattern using a ...
arxiv +1 more source
Anticlastic Curvature and Material Freedom
physica status solidi (b), EarlyView.Anticlastic curvature occurs in bent bars for positive Poisson's ratio; synclastic curvature occurs for negative Poisson's ratio provided the material is homogeneous and elastic. Some planar negative Poisson's ratio materials exhibit anticlastic saddle curvature rather than convex curvature in bending due to effects of 3D structure.
Roderic Lakes
wiley +1 more source
3D imaging using scanning diffractometry
Scientific Reports, 2021 Imaging of cells is a challenging problem as they do not appreciably change the intensity of the illuminating light. Interferometry-based methods to do this task suffer from high sensitivity to environmental vibrations.
Morteza J. Siavashani +6 more
doaj +1 more source
, 1970 In holographic interferometry a small movement of apparatus between exposures causes the background of the reconstructed scene to be covered with interference fringes approximately parallel to each other.
Heflinger, L. O.
core +1 more source
Multiple Reflections on Huygens' Principle
Geophysical Prospecting, EarlyView.ABSTRACT According to Huygens' principle, all points on a wave front act as secondary sources emitting spherical waves and the envelope of these spherical waves forms a new wave front. In the mathematical formulation of Huygens' principle, the waves emitted by the secondary sources are represented by Green's functions.
Kees Wapenaar
wiley +1 more source
Holographic and Video Techniques Applied to Engineering Measurement
Measurement + Control, 1971 In a brief period, lasers have developed from curiosities of the physics laboratory to tools suited to incorporation in complex instrumentation systems.
J N Butters, J A Leendertz
doaj +1 more source
, 2018 One of the fundamental limitations in photonics is the lack of a bidirectional transducer that can convert optical information into electronic signals or vice versa.
Baek, YoonSeok +3 more
core +1 more source
Journal of the American Ceramic Society, Volume 108, Issue 7, July 2025.Abstract The dissolution kinetics of tricalcium silicate (Ca3SiO5, or C3S), the primary component of ordinary Portland cement, are critical to cement hydration, which governs key properties, such as setting, hardening, long‐term mechanical performance, and durability.
Ziyu Chen +6 more
wiley +1 more source
Special Issue on Digital Holographic 3D Imaging: Capture, Display, and Evaluation
ETRI Journal, 2019 Holography has been fascinating people for almost 70 years (since Gabor's invention in 1947) as a true three‐dimensional (3D) imaging technology that can replicate 3D scenes in free space.
Małgorzata Kujawińska +3 more
doaj +1 more source
Mechanical behavior study of laminate composite by three-color digital holography
Journal of the European Optical Society-Rapid Publications, 2017 A method for real time 3D measurements based on three-color digital holographic interferometry is presented and applied to the investigation of fracture mechanisms in laminate composite submitted to a three point flexural loading. A convolution algorithm
M Karray +3 more
doaj +1 more source