Application of Fractal Theory in Pavement Surface Texture Measurement

ICCTP 2009 ◽  
2009 ◽  
Author(s):  
Yan Yuan ◽  
Anxing Lai ◽  
Yun Que
Keyword(s):  
Surface Texture ◽  
Fractal Theory ◽  
Texture Measurement ◽  
Pavement Surface

High-Speed Noncontact Profiling of Pavement Surface Texture and Its Significance

1986 ◽  
Vol 108 (3) ◽  
pp. 455-461
Author(s):  
J. C. Wambold ◽  
J. J. Henry
Keyword(s):  
Surface Texture ◽  
High Speed ◽  
Large Scale ◽  
Vision System ◽  
Small Scale ◽  
Skid Resistance ◽  
Texture Measurement ◽  
Pavement Surface ◽  
Texture Characteristics ◽  
Regression Techniques

It is generally agreed that the friction between a tire and a wet pavement (skid resistance) is controlled by the surface texture characteristics. Therefore, by measuring the relevant parameters describing texture, or by measuring a physical process dependent on texture, regression techniques can be used to relate skid resistance to the chosen texture parameter or process. Two scales of texture are of particular importance: microtexture (small-scale asperities) and macrotexture (large-scale asperities). This paper describes work performed to: (1) review candidate macrotexture and microtexture measurement methods that can be made at highway speeds (at or about 64 km/h [40 mph]), which are presently used or have potential for use in pavement texture measurement; (2) design and build a prototype of the most promising method; and (3) evaluate the effects of pavement surface texture on skid resistance. A prototype noncontact vision system that makes texture measurements at highway speeds was developed, and several improvements were made to upgrade the system to provide an improved prototype. Both hardware and software enhancements have yielded a texture measurement system that can obtain pavement macrotexture data in a fast, efficient, and reliable way.

Surface Texture Measurement with Profile Method Using Six-Axis Coordinate Measuring Machine

2021 ◽  
Vol 410 ◽  
pp. 872-877
Author(s):  
Andrey V. Kochetkov ◽  
Andrey A. Troshin ◽  
Oleg V. Zakharov
Keyword(s):  
Surface Texture ◽  
Measurement Errors ◽  
Coordinate Measuring Machine ◽  
Texture Measurement ◽  
Analytical Geometry ◽  
Complex Shapes ◽  
Measurement Results ◽  
Measuring Machine ◽  
Cartesian Coordinate ◽  
Filtering Effect

Currently the measurement of surface texture in mechanical engineering is traditionally carried out using profilometers. Modern profilometers do not allow measuring of surfaces with complex shapes. This is due to the different sensitivity of the sensor and the discreteness of the movements along the axes of the Cartesian coordinate system. Coordinate Measuring Machines are devoid of such a drawback. However, stylus of the coordinate measuring machine has a diameter many times larger than the diamond stylus of the profilometer. Therefore, there is a mechanical filtering effect, that affects the results of measuring the parameters of the surface texture. In this paper a mathematical model of the contact of the spherical stylus and a rough surface based on analytical geometry is proposed. Influence of the diameter of the spherical stylus on the maximum measurement errors of a amplitude parameters are investigated. Seven amplitude parameters Rp, Rv, Rz, Ra, Rq, Rsk, Rku of the surface texture are modeled. Coordinate measuring machine and profilometer with stylus diameter of 2 μm measurement results are compared. it was concluded that the stylus diameter of the coordinate measuring machine when measuring the surface texture should be no more than 20 μm.

Evaluation of pavement surface texture at the network level

2018 ◽  
Vol 34 (1) ◽  
pp. 87-98
Author(s):  
Shuvo Islam ◽  
Mustaque Hossain ◽  
Richard Miller
Keyword(s):  
Surface Texture ◽  
Pavement Surface

An Average Wavelength Parameter for Surface Metrology

1972 ◽  
Vol 5 (3) ◽  
pp. 95-101 ◽  
Author(s):  
R C Spragg ◽  
D J Whitehouse
Keyword(s):  
Quality Control ◽  
Surface Texture ◽  
Surface Metrology ◽  
Average Height ◽  
Additional Parameter ◽  
Texture Measurement ◽  
International Standard ◽  
Arithmetic Average ◽  
Average Wavelength

The new International Standard for the assessment of surface texture is based on the Arithmetic Average Height Index Ra. This parameter, although extremely valuable for quality control in manufacture, takes little or no account of the openness or closeness of the texture. Recently an additional parameter, the Average Wavelength Λa has been defined which is wavelength conscious and which supplements the information given by Ra. This paper shows how this new parameter can be derived and measured, and gives some practical examples of the application to surface texture measurement.

Comparison of Surface Texture Measurement by Stylus and Fiber Optic Transducers

1998 ◽  
Vol 26 (1) ◽  
pp. 70 ◽  
Author(s):  
DR Petersen ◽  
RE Link ◽  
W Scott ◽  
A Donovan
Keyword(s):  
Surface Texture ◽  
Fiber Optic ◽  
Texture Measurement

Traceability for Areal Surface Texture Measurement

2010 ◽  
Vol 437 ◽  
pp. 121-125 ◽  
Author(s):  
Richard Leach ◽  
Claudiu Giusca ◽  
Kazuya Naoi
Keyword(s):  
Surface Texture ◽  
Vertical Displacement ◽  
National Physical Laboratory ◽  
Air Bearing ◽  
Texture Measurement ◽  
Physical Laboratory ◽  
Working Volume ◽  
Definition Of ◽  
Laser Interferometers ◽  
Areal Surface

The deterministic structuring of a surface is having a profound effect on many industrial products by allowing the manufacturer to significantly alter the way in which a surface functions. This has led to a clear need in industry and academia for traceable areal surface texture measurements. To address this need traceable transfer artefacts and primary instrumentation are required. The National Physical Laboratory (NPL) is working on two projects – one to develop areal transfer artefacts and one to develop a traceable areal surface texture measuring instrument. The authors describe the development of the artefacts and instrument, and present some of the challenges that are still required to be able to offer an areal traceability measurement service to industry. The instrument has a working volume of 8 mm  8 mm  0.1 mm and uses a co-planar air-bearing slideway to move the sample. It also uses a novel vertical displacement measuring probe, incorporating an air-bearing and an electromagnetic force control mechanism. The motions of the slideway and the probe are measured by laser interferometers thus ensuring traceability of the measurements to the definition of the metre. The artefacts were manufactured using a range of machining technologies and in a range of geometries suitable for stylus and optical based instruments.

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