This paper deals with a non-contact, optical measuring method which unitesthe assessment of roughness form and waviness in one single instrumenL Themethod is based on the deflection of light which leads to a more or less broadscattered light distribution in the case of roughness and to a shift of the totaldistribution curve due to waviness…
Abstract This paper presents an internet based surface texture analysis and information system, which appliesJava and internet technology to engineering metrology. The system includes most of the standardized andadvanced analysis tools and a database for surface texture. The most distinct feature of this system is thatit can run on the internet, which enables platform independent…
Abstract This paper describes a technique which can characterize the surface lay structure contained within a three-dimensional surface map. The technique is based on a generally known fact, that two, closely spaced, parallel profiles will appear shifted whenever the dominant lay direction is not perpendicular to the profile direction. The cross-correlation function is utilized to…
The functional performance of two surfaces in contact depends upon their material properties as well as their geometrical properties. The physical and chemical properties that a surface acquires during machining can be very different from those of the underlying undisturbed material. They are just as important for a complete typological description as the geometrical state,…
This article describes and evaluates the focus variation method, an optical 3D measurementtechnique. The goal is to analyse the performance of the method on a series of typical measurement tasksincluding roughness measurements, form and wear measurements. First, a comparison of roughnessmeasurements between the proposed method and a tactile device on a newly developed roughness standardis…
A review article Abstract Some important types of instrumentation for measuring surfaces both past and present are reviewed. Exhaustive lists of instruments and performance are not presented; rather more emphasis is placed on the philosophy of measurement. An attempt is made to classify the surface features and also the function of surfaces as a pre-requisite…
Abstract An overview of the contribution of the members of the C.I.R.P. community to the progress of Metrology andSurface Roughness Quality Evaluation is given. The following items are included in the part on metrology: briefoverview of the existing situation before 1950, contribution to the successive definitions of the unit of length andrelated reference length standards,…
Abstract The role of surface metrology is explained. It is shown how it has changed over the years and how it is likely to develop. Emphasis is placed on the underlying philosophy rather than on description of individual instruments. It is shown how the classification of workpiece performance is related to surface typology and manufacturing…
Abstract In the recent years there has been an increasing interest in designing surfaces to meet a particular functional requirement. Examples include surfaces generated using microreplication and micro-structure technology. The surface analysis techniques currently available only deals with the two-dimensional characterization of the three-dimensional surfaces. There is a growing need to develop an intelligent surface…
In order to ensure a reliable calibration of surface topography measuring instruments the use of practical calibration strategies is required. This requirement can be fulfilled when measurement standards with a defined surface structure in accordance to the later obsessed application are used. Different examples for the design and manufacturing of accordant measurement standards have been…
Abstract The standard ISO 13565-2 defines the RkRk parameters for the functional characterisation of technical surfaces. So far, no particular material measures for the calibration of these parameters have been defined in the international standardization. For the application and the functional behaviour of technical surfaces the RkRk parameters however have a critical significance, so there is a demand by…
Abstract. Filters are used in precision engineering and production measurement to suppress unwanted components in measured data, to reconstruct the sampled surface in case of tactile measurements, or to separate portions of different scales. The application of such filters comprises a wide area, in essence, coordinate measurement, form and contour measurement, as well as surface…
