A new optical technique for roughness measurement on moving surface

Wang, W.; Wong, P.L.; Luo, Jianbin; Zhang, Z.

doi:10.1016/s0301-679x(98)00034-6

Cited by 39 publications

(14 citation statements)

References 9 publications

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“…This enables the development of a more precise wear model and also to better predict the lifetime of a given system. Some studies [1,[6][7][8][9][10] have already highlighted the importance of measuring the wear rate continuously and in situ during the process. However, in most studies, the tribo-system is simplified to allow in situ measurements [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, this method is adapted to measure the wear rate but does not give information on the local change of the surface topography. To overcome these difficulties, special optical methods combining speckle and scattering phenomena coupled with image analysis were used to calculate the roughness on a moving surface [1,6]. Other studies [11][12][13] have exploited rapid methods, consisting of a visual monitoring system combined with a known illumination and image analysis to assess the surface roughness but without directly monitoring a tribological process.…”

Section: Introductionmentioning

confidence: 99%

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A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

Meylan

Dogan

Sage

et al. 2016

Wear

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a b s t r a c tThis contribution presents a simple, fast, and low-cost method to track in situ and in real time the evolution of the surface topography. The method combines an optical method (collimated light) with image analysis. The method was validated using a complex tribo-system; a reciprocal sliding of a rough cast iron counter-piece under mixed lubrication.We demonstrated that the optical method is well suited to observe the evolution of the contact areas during sliding. We also proved that the contact area occurs on the highest peaks of the surface roughness. Finally, we estimated the wear rate by combining the information of the contact area and the Abbott-Firestone curve obtained by profilometry. The wear rate was found to be 40 times higher in the early stage of sliding as compared to the steady-state. The running-in of this particular system was found to be approximately 10 h.In addition to be simple, fast and low-cost, the proposed method has other advantages. It is adaptable for real industrial tests conditions. The fast data analysis allows the wear rate of a tribo-system being determined in real-time. This method characterise the real contact areas of the observed piece, which is difficult, if not impossible, to obtain by profilometric observation alone.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

Meylan

Dogan

Sage

et al. 2016

Wear

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“…As the position of the mirror is known the altitude of the surface point can be obtained. Methods based on the projection of fringes (Conte et al,1990) or speckle (Wang et al, 1998) on the surface are also used to obtain information about the roughness of the surface in so far as fringe patterns are obtained and analysed by image processing. The measurement of textile hairiness was historically performed on yarns.…”

Section: State Of the Artmentioning

confidence: 99%

Optoelectronic Techniques for Surface Characterization of Fabrics

Tourlonias¹,

Bueno²,

Bigué³

2011

Optoelectronics - Materials and Techniques

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“…The technique is substantially based on the laser speckle contrast method, commonly employed in roughness measurement, as shown in Toh et al (1998Toh et al ( , 2001, Wang et al (1998), Leonard and Toal (1998) and Yarlagadda (2010). In our application it is used in a torque evaluation supported by the cross-correlation technique for time shift.…”

Section: Introductionmentioning

confidence: 99%

Development of a non-contact torque transducer based on the laser speckle contrast method

Garinei¹,

Marsili²

2017

J. Sens. Sens. Syst.

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Abstract. When a torque measurement is required, torque transducers show many drawbacks during their use: the usual limits are the need for contact and the effects on shaft line parameters. A new approach is proposed in this work: a non-contact torque meter for a machine shaft has been developed. It carries out torque measurements evaluating the torsional displacement between two distinct sections of the shaft, through the monitoring of their roughness.The sensing principle employed is the classical laser speckle contrast method. The outcoming intensity scattered by the rough surface is processed by a cross-correlation function. In this way, the angular torsion of two distinct sections is obtained. It is therefore possible to point out the applied torque knowing the shaft torsional stiffness.

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A new optical technique for roughness measurement on moving surface

Cited by 39 publications

References 9 publications

A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

Optoelectronic Techniques for Surface Characterization of Fabrics

Development of a non-contact torque transducer based on the laser speckle contrast method

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