A non-contact 3D method to characterize the surface roughness of castings

Nwaogu, Ugochukwu Chibuzoh; Tiedje, Niels Skat; Hansen, Hans Nørgaard

doi:10.1016/j.jmatprotec.2012.08.008

Cited by 57 publications

(40 citation statements)

References 12 publications

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“…FVM is not only relatively new but includes the most dynamically developing measurement techniques of the last several years. Application of these techniques in a number of modern scientific and technological fields can be found in the literature [22][23][24][25]. Moreover, in abrasive machining technologies many applications occur that relate to the assessment of the condition of the machined surface [26][27][28][29] and the condition of the abrasive tool's active surface [30][31][32][33].…”

Section: Characteristics Of the Focus-variation Microscopymentioning

confidence: 99%

The Use of Focus-Variation Microscopy for the Assessment of Active Surfaces of a New Generation of Coated Abrasive Tools

Kapłonek

Nadolny

Królczyk

2016

Measurement Science Review

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In this paper, the selected results of measurements and analysis of the active surfaces of a new generation of coated abrasive tools obtained by the use of focus-variation microscopy (FVM) are presented and discussed. The origin of this technique, as well as its general metrological characteristics is briefly described. Additionally, information regarding the focus variation microscope used in the experiments -InfiniteFocus ® IF G4 produced by Alicona Imaging, is also given. The measurements were carried out on microfinishing films (IMFF), abrasive portable belts with Cubitron™ II grains, and single-layer abrasive discs with Trizact™ grains. The obtained results were processed and analyzed employing TalyMap 4.0 software in the form of maps and profiles, surface microtopographies, AbbottFirestone curves, and calculated values of selected areal parameters. This allowed us to describe the active surfaces of the coated abrasive tools, as well as to assess the possibility of applying the FVM technique in such kinds of measurements.

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Section: Characteristics Of the Focus-variation Microscopymentioning

confidence: 99%

The Use of Focus-Variation Microscopy for the Assessment of Active Surfaces of a New Generation of Coated Abrasive Tools

Kapłonek

Nadolny

Królczyk

2016

Measurement Science Review

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“…Ideally, surface analysis would be performed exclusively with 3D scanning methods as areal parameters have been found to be more closely related to the functional performance of the measured surface [13]. However, this can be impractical if the workpiece is too large or cannot be removed from its fixture in-between operations, necessitating the need for 2D profile measurements which require much less time and can be obtained while the workpiece is still mounted in the machining center.…”

Section: Measurement and Characterization Of Surfacementioning

confidence: 99%

Characterization of surface polishing with spindle mounted abrasive disk-type filament tool for manufacturing of machine tool sliding guideways

Raymond

Hill

Soshi

2016

Int J Adv Manuf Technol

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In order to expand the regional production of machine tools which utilize precision machined sliding guideways, cubic boron nitride (CBN) hard milling may be implemented as an alternative finish process instead of conventional surface grinding. While higher material removal rates can be achieved with a milling strategy, the use of a defined cutting edge leads to surfaces with asperities. These sharp peaks quickly wear down during sliding contact, resulting in unacceptable changes in the load bearing surface of the guide. Therefore, a post process to milling must be implemented to mitigate these features. This paper investigates the use of a spindle mounted abrasive disk filament tool for producing a functional surface similar to the ground surfaces. The optimal process parameters were investigated using 2D profile measurements, followed by comparison using areal analysis of ground, milled, and polished surfaces. It was found that polishing reduces both the height and volume of asperities on the milled surface, leading to contact characteristics which were more similar to those of the conventional ground surfaces currently used for sliding guideways.

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“…Figure 1 shows pictures and focus variation microscope images (Infinite Focus G4, Alicona, Austria) of the tested fabrics. The focus variation microscope images were taken to determine the roughness of the fabric's surfaces [15,16]. The images show the fabric's surface heights z(x, y) in false colors.…”

Section: Fabricsmentioning

confidence: 99%

Kinetic Friction of Sport Fabrics on Snow

et al. 2016

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After falls, skiers or snowboarders often slide on the slope and may collide with obstacles. Thus, the skier's friction on snow is an important factor to reduce incidence and severity of impact injuries. The purpose of this study was to measure snow friction of different fabrics of ski garments with respect to roughness, speed, and contact pressure. Three types of fabrics were investigated: a commercially available ski overall, a smooth downhill racing suit, and a dimpled downhill racing suit. Friction was measured for fabrics taped on a short ski using a linear tribometer. The fabrics' roughness was determined by focus variation microscopy. Friction coefficients were between 0.19 and 0.48. Roughness, friction coefficient, and friction force were highest for the dimpled race suit. The friction force of the fabrics was higher for the higher contact pressure than for the lower one at all speeds. It was concluded that the main friction mechanism for the fabrics was dry friction. Only the fabric with the roughest surface showed friction coefficients, which were high enough to sufficiently decelerate a sliding skier on beginner and intermediate slopes.

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A non-contact 3D method to characterize the surface roughness of castings

Cited by 57 publications

References 12 publications

The Use of Focus-Variation Microscopy for the Assessment of Active Surfaces of a New Generation of Coated Abrasive Tools

The Use of Focus-Variation Microscopy for the Assessment of Active Surfaces of a New Generation of Coated Abrasive Tools

Characterization of surface polishing with spindle mounted abrasive disk-type filament tool for manufacturing of machine tool sliding guideways

Kinetic Friction of Sport Fabrics on Snow

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