Monitoring technique of strains during phase-transformation using laser speckle method.
نویسندگان
چکیده
منابع مشابه
Phase Shifting Technique in Laser Speckle Image Processing
A simple technique of speckle photography has been applied to measure small changes/deformation of the surface of laser scattering materials. Low-cost commercial charge coupled device photo camera provides the images of Laser speckle pattern with the beam splitter arrangement. A speckle pattern has been taken with the system at rest and then second image captured after the deformation was made ...
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The use of a “window” 2D Hilbert transform for the reconstruction of the phase distribution of the intensity of a speckle field is proposed. It is shown that the advantage of this approach consists in the invariance of a phase map to a change of the position of the kernel of transformation and in the possibility to reconstruct the structure-forming elements of the skeleton of an optical field, ...
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Abstract: Austenitic stainless steels exhibit a low hardness and weak tribological properties. The wear behaviour of austenitic stainless steel AISI 316 was evaluated through the pin on disc tribological method. For investigating the effect of wear on the changes in microstructure and resistance to wear, optical microscopy and scanning electron microscope were used. The hardness of the worn...
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Laser speckle contrast analysis (LASCA): a nonscanning, full-field technique for monitoring capillary blood flow.
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ژورنال
عنوان ژورنال: Journal of the Japan Welding Society
سال: 1998
ISSN: 0021-4787,1883-7204
DOI: 10.2207/qjjws1943.67.144