Laser-assisted glass-based sealing of polished porcelain stoneware tile surface to increase stain resistance

2020 ◽  
Vol 40 (9) ◽  
pp. 3478-3488
Author(s):  
Camila de M. Strieder ◽  
Francisco Ratusznei ◽  
Milton Pereira ◽  
Oscar R.K. Montedo
Keyword(s):  
Stain Resistance ◽  
Tile Surface

Functionalization of ceramic tile surface by sol–gel technique

2009 ◽  
Vol 334 (2) ◽  
pp. 195-201 ◽  
Author(s):  
F. Bondioli ◽  
R. Taurino ◽  
A.M. Ferrari
Keyword(s):  
Ceramic Tile ◽  
Sol Gel ◽  
Gel Technique ◽  
Tile Surface

Rack Level Modeling of Air Flow Through Perforated Tile in a Data Center

2012 ◽  
Author(s):  
Vaibhav K. Arghode ◽  
Pramod Kumar ◽  
Yogendra Joshi ◽  
Thomas S. Weiss ◽  
Gary Meyer
Keyword(s):  
Data Center ◽  
Body Force ◽  
Air Flow ◽  
The Body ◽  
Physical Models ◽  
Cfd Modeling ◽  
Computational Time ◽  
Force Model ◽  
Flow Through ◽  
Tile Surface

Effective air flow distribution through perforated tiles is required to efficiently cool servers in a raised floor data center. We present detailed computational fluid dynamics (CFD) modeling of air flow through a perforated tile and its entrance to the adjacent server rack. The realistic geometrical details of the perforated tile, as well as of the rack are included in the model. Generally models for air flow through perforated tiles specify a step pressure loss across the tile surface, or porous jump model based on the tile porosity. An improvement to this includes a momentum source specification above the tile to simulate the acceleration of the air flow through the pores, or body force model. In both of these models geometrical details of tile such as pore locations and shapes are not included. More details increase the grid size as well as the computational time. However, the grid refinement can be controlled to achieve balance between the accuracy and computational time. We compared the results from CFD using geometrical resolution with the porous jump and body force model solution as well as with the measured flow field using Particle Image Velocimetry (PIV) experiments. We observe that including tile geometrical details gives better results as compared to elimination of tile geometrical details and specifying physical models across and above the tile surface. A modification to the body force model is also suggested and improved results were achieved.

scholarly journals Improving the technology of repair painting with powder-coated paints in agro-industrial complex

2021 ◽  
Vol 285 ◽  
pp. 07012
Author(s):  
Andrey Bodrov ◽  
Anton Panichkin ◽  
Denis Lomakin ◽  
Andrew Simushkin
Keyword(s):  
Contact Angle ◽  
Roughness Parameter ◽  
Corrosion Damage ◽  
Industrial Complex ◽  
Powder Coatings ◽  
Chemical Methods ◽  
Painted Surface ◽  
Stain Resistance ◽  
Separation Force ◽  
Contact Angle Of Wetting

The article presents the results of studies to determine the dependence of the degree of adhesion and the separation force of the powder coatings layer on the roughness parameter of the substrate, as well as the contact angle of wetting for various methods of preparing the painted surface by chemical methods. In addition, practical tests for stain resistance were carried out, which showed the absence of corrosion damage, as well as a slight change in color, gloss of coatings, chalking and dirt retention on the studied coating samples.

An inclusion of magnetite in diamond

1924 ◽  
Vol 20 (107) ◽  
pp. 245-247
Author(s):  
L. J. Spencer
Keyword(s):  
South Africa ◽  
Cleavage Surface ◽  
Crystal Face ◽  
Sharp Image ◽  
Tile Surface

A Minute, black fragment of material, taken by Dr. J. R. Sutton from a cavity exposed on a cleavage-surface of a colourless diamond from Bultfontein mine, Kimberley, South Africa, was sent by him for determination. It is black with a sub-metallic lustre and in parts a bronzed tarnish; and is quite opaque even on the edges. The form is roughly that of a triangular chip, measuring 11/2 by 11/4 mm. with a greatest thickness of about 1/2 mm. The weight is about 1 milligram. Tile surface shows a small and uneven to granular fracture. On one portion there is a good crystal-face which reflects a sharp image ; and on one part of this face there is a stepped growth with striae at 60°.

scholarly journals Automated Control of Surface Defects on Ceramic Tiles Using 3D Image Analysis

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1250
Author(s):  
Andrzej Sioma
Keyword(s):  
Image Analysis ◽  
Surface Defects ◽  
Three Dimensional ◽  
3D Image ◽  
Ceramic Tiles ◽  
Production Lines ◽  
Automated Control ◽  
Automatic Location ◽  
Surface Image ◽  
Tile Surface

This paper presents a method of acquisition and analysis of three-dimensional images in the task of automatic location and evaluation of defects on the surface of ceramic tiles. It presents a brief description of selected defects appearing on the surface of tiles, along with the analysis of their formation. The paper includes the presentation of the method of constructing a 3D image of the tile surface using the Laser Triangulation Method (LTM), along with the surface imaging parameters employed in the research. The algorithms of three-dimensional surface image analysis of ceramic tiles used in the process of image filtering and defect identification are presented. For selected defects, the method of measuring defect parameters and the method of visualization of defects on the surface are also presented. The developed method was tested on defective products to confirm its effectiveness in the field of quick defect detection in automated control systems installed on production lines.

Research on a Flow Resistance Mass Flow Sensor

2014 ◽  
Vol 904 ◽  
pp. 345-351
Author(s):  
Xin Li ◽  
Ling Yu ◽  
Chun Xue Jia
Keyword(s):  
Service Life ◽  
Low Power ◽  
Power Dissipation ◽  
Flow Resistance ◽  
Flow Sensor ◽  
Flow Ratio ◽  
Stain Resistance ◽  
Low Power Dissipation ◽  
Mass Flow Sensor ◽  
Large Flow

A flow resistance mass (momentum) flow sensor has been designed. The structure and principle of flow sensor are introduced. The testing results show that the flow sensor is excellent in stain resistance, large flow ratio, low power dissipation and long service life. A heatmeter can be achieved using the designed sensor with matching integer operation and display modules.

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