Abstract When testing the surface quality of finest structures, white‐light interferometers are in their element, both production and development, as well laboratories research. This measurement principle works on almost all materials, operates without contact, providing profiles 3D with height resolutions nanometer range. Today, large‐area measurements just possible detailed investigations hig...

Definition The deviation of the height of the ocean surface from the geoid is known as the ocean surface topography. The geoid is a surface on which the Earth’s gravity field is uniform. The ocean surface topography is caused by ocean waves, tides, currents, and the loading of atmospheric pressure. The main application of ocean surface topography is for the determination of large-scale ocean ci...

nowadays the surface texturing has been widely recognized as a usable capability to improve the tribological systems. in this paper, ultrasonic assisted turning (uat) isperformed to create the micro textures on the flat faces. micro surface texturing ismade on the al7075-t6 by the uat in the face turning process. then, the influences of cutting speed feed, vibration direction and vibration ampl...

A surface microtopography design and manufacturing methodology is presented that handles the intrinsic geometrical complexity of a surface microtopography by introducing topography descriptors. The concept of topography descriptor is a generalization originating from known techniques of three-dimensional surface topography analysis. Topography descriptors may be seen as transfer functions that ...

In mantle convection models, the top surface is traditionally approximated as a freeslip boundary, and the dynamic topography is obtained by assuming that the normal stress on the free-slip boundary is compensated instantaneously through surface deformation. It has already been shown that this approximation is valid for longwavelength topography. Based on both viscous and viscoelastic models wi...

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract An optimal estimation method for simultaneously determining both basal slipperiness and basal topography from variations in surface flow velocity and topography along a flow line on ice streams and ice s...

In paper industry, the measurement of paper surface topography is important for paper quality control. Noncontact and fast photometric stereo overcomes the disadvantages of the traditional surface topography measurement by the profilometer. In this paper, we present an improvement to three-light photometric stereo for paper surface topography reconstruction. Experiments comparing reconstructed ...

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