Absolute calibration of smooth surface and cylindrical surface measurement

The random tangential projection of a surface

Advances in Applied Probability ◽

10.1017/s0001867800050242 ◽

1980 ◽

Vol 12 (02) ◽

pp. 425-446 ◽

Cited By ~ 1

Author(s):

R. E. Miles

Keyword(s):

Cylindrical Surface ◽

Smooth Surface ◽

Smooth Curve ◽

Image Plane ◽

Parallel Line ◽

Tangential Projection ◽

Light Beams ◽

Boundary Curves ◽

Isotropic Random

Suppose a smooth surface S is exposed to a penetrating beam of parallel line rays and that, wherever a ray has a tangency with S, there is a corresponding point registration in an image plane H placed perpendicular to the beam. The registering rays form a cylindrical surface which registers in H as a smooth curve C (except possibly for a number of cusps). Properties of C when the beam is taken isotropic random in space are investigated, and stereological applications are noted. The phenomenon of screening of projecting rays, which occurs for example with opaque surfaces exposed to light beams, is considered. Limiting processes permit extensions of the formulae to the cases in which S contains curved edges and in which any boundary curves of S also register. Finally, various related types of random tangent to a surface are considered.

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The random tangential projection of a surface

Advances in Applied Probability ◽

10.2307/1426604 ◽

1980 ◽

Vol 12 (2) ◽

pp. 425-446 ◽

Cited By ~ 6

Author(s):

R. E. Miles

Keyword(s):

Cylindrical Surface ◽

Smooth Surface ◽

Smooth Curve ◽

Image Plane ◽

Parallel Line ◽

Tangential Projection ◽

Light Beams ◽

Boundary Curves ◽

Isotropic Random

Suppose a smooth surface S is exposed to a penetrating beam of parallel line rays and that, wherever a ray has a tangency with S, there is a corresponding point registration in an image plane H placed perpendicular to the beam. The registering rays form a cylindrical surface which registers in H as a smooth curve C (except possibly for a number of cusps). Properties of C when the beam is taken isotropic random in space are investigated, and stereological applications are noted. The phenomenon of screening of projecting rays, which occurs for example with opaque surfaces exposed to light beams, is considered. Limiting processes permit extensions of the formulae to the cases in which S contains curved edges and in which any boundary curves of S also register. Finally, various related types of random tangent to a surface are considered.

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The Polishing Process of Cylindrical Rollers by Using a Double-Side Lapping Machine

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.589-590.447 ◽

2013 ◽

Vol 589-590 ◽

pp. 447-450 ◽

Cited By ~ 1

Author(s):

Wen Hua Zhou ◽

Wei Feng Yao ◽

Ming Feng ◽

Bing Hai Lv ◽

Qian Fa Deng

Keyword(s):

Surface Quality ◽

Cylindrical Surface ◽

Smooth Surface ◽

Great Influence ◽

Working Life ◽

Geometric Accuracy ◽

Polishing Process ◽

Rolling Bearings ◽

Lapping Machine

The surface quality of cylindrical rollers has a great influence on the working life of rolling bearings. In the paper, double-side lapping machine and flannelette pads are applied to polish the cylindrical surface of rollers. After 20 min polishing, rollers with smooth surface are obtained and the roundness of the rollers have a improvement of about 0.3 μm, which means that the polishing process based on double-side lapping method can effectively improve the surface quality and geometric accuracy of cylindrical rollers.

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Non-Abrasive Cryogenic Polishing Device on Cylindrical Surface Based on Recurdyn Dynamic Simulation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.418-420.861 ◽

2011 ◽

Vol 418-420 ◽

pp. 861-864

Author(s):

Tian Zhu Liang ◽

Shou Ping Qu

Keyword(s):

Machine Tool ◽

Dynamic Simulation ◽

Rotational Speed ◽

Cylindrical Surface ◽

Smooth Surface ◽

3D Model ◽

Precision Machine ◽

Machine Tool Spindle ◽

Aero Engine ◽

Ultra Precision

With the increasing rotational speed of the aero-engine shaft and ultra-precision machine tool spindles, there has been the machine tool spindle with ten thousand Rpm. It demands that the spindles should have high rotational accuracy and ultra-smooth surface. In this paper, it takes use of the new ice tool polishing technology to polish metal cylindrical surfaces. The 3D model has been designed. And also the model has been analyzed by Recurdyn software. It verified that the experiment is feasible and effective.

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Cylindrical surface measurement

Optical Metrology and Inspection for Industrial Applications V ◽

10.1117/12.2501186 ◽

2018 ◽

Author(s):

Peng Wu ◽

Xin Huang ◽

Sen Han ◽

Hao Sun ◽

Fang Wang

Keyword(s):

Cylindrical Surface ◽

Surface Measurement

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Three-Dimensional Structure of Rotavirus-Fab Complex

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100179944 ◽

1990 ◽

Vol 48 (1) ◽

pp. 238-239

Author(s):

B.V.V. Prasad ◽

E. Marietta ◽

J.W. Burns ◽

M.K. Estes ◽

W. Chiu

Keyword(s):

Image Processing ◽

Smooth Surface ◽

Three Dimensional ◽

Outer Shell ◽

Dimensional Structure ◽

Structural Studies ◽

Cell Penetration ◽

Electron Cryomicroscopy ◽

Image Processing Techniques ◽

Processing Techniques

Rotaviruses are spherical, double-shelled particles. They have been identified as a major cause of infantile gastroenteritis worldwide. In our earlier studies we determined the three-dimensional structures of double-and single-shelled simian rotavirus embedded in vitreous ice using electron cryomicroscopy and image processing techniques to a resolution of 40Å. A distinctive feature of the rotavirus structure is the presence of 132 large channels spanning across both the shells at all 5- and 6-coordinated positions of a T=13ℓ icosahedral lattice. The outer shell has 60 spikes emanating from its relatively smooth surface. The inner shell, in contrast, exhibits a bristly surface made of 260 morphological units at all local and strict 3-fold axes (Fig.l).The outer shell of rotavirus is made up of two proteins, VP4 and VP7. VP7, a glycoprotein and a neutralization antigen, is the major component. VP4 has been implicated in several important functions such as cell penetration, hemagglutination, neutralization and virulence. From our earlier studies we had proposed that the spikes correspond to VP4 and the rest of the surface is composed of VP7. Our recent structural studies, using the same techniques, with monoclonal antibodies specific to VP4 have established that surface spikes are made up of VP4.

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