Surface Metrology

Realization of Surface Topography Separation by B Spline Wavelet – Meifa Huanga, Xiong Chengb, Guang Qianc, Jiangtai Huangd,Jing Zhange and Hui Jingf

Abstract. With the development of science and technology, the higher and higher surface accuracy ofworkpiece is required. The characterization of surface topography affect greatly on functionalperformance of workpiece. In recent years, many researchers have made a large progress on the studyof surface topography and presented some related standards. The assessment of parameters of surfaceroughness, however,…

Read More Realization of Surface Topography Separation by B Spline Wavelet – Meifa Huanga, Xiong Chengb, Guang Qianc, Jiangtai Huangd,Jing Zhange and Hui Jingf
Multi-scale analysis of engineering surfaces – X. Chen, J. Raja and S. Simanapalli

Abstract Conventional surface characterization techniques involving random process analysis are limited in characterizing multi-scale surface features relevant to manufacturing processes and functions. This paper introduces a novel technique for multi-scale characterization of engineering surfaces by applying wavelet transform. The main advantages of wavelet transform over other existing signal processing techniques are its space-frequency localization and…

Read More Multi-scale analysis of engineering surfaces – X. Chen, J. Raja and S. Simanapalli
Methodology of surface profile filtering and roughness evaluation – Y Munev

Abstract This paper concerns practical realization of open surface profile filtering and roughness evaluation. The profile is represented in the form of discrete data. A code for applying discrete Gaussian filter to a surface profile in accordance with ISO 16610–21 is presented. Linear interpolation before numerical integration for average roughness calculation is proposed. A method…

Read More Methodology of surface profile filtering and roughness evaluation – Y Munev
Reduction in Errors in Roughness Evaluation with an AccurateDefinition of the S-L Surface – Przemysław Podulka , Wojciech Macek , Ricardo Branco and Reza Masoudi Nejad

Abstract: Characterization of surface topography, roughly divided into measurement and dataanalysis, can be valuable in the process of validation of the tribological performance of machinedparts. Surface topography, especially the roughness, can respond straightly to the machining processand, in some cases, is defined as a fingerprint of the manufacturing. When considering the highprecision of surface topography…

Read More Reduction in Errors in Roughness Evaluation with an AccurateDefinition of the S-L Surface – Przemysław Podulka , Wojciech Macek , Ricardo Branco and Reza Masoudi Nejad
Fast algorithm of the robust Gaussian regression filter for areal surface analysis – W Zeng, X Jiang, and P J Scott

AbstractIn this paper, the general model of the Gaussian regression filter for areal surface analysis isexplored. The intrinsic relationships between the linear Gaussian filter and the robust filter areaddressed. A general mathematical solution for this model is presented. Based on thistechnique, a fast algorithm is created. Both simulated and practical engineering data(stochastic and structured) have…

Read More Fast algorithm of the robust Gaussian regression filter for areal surface analysis – W Zeng, X Jiang, and P J Scott
Characterization of surface texture generated by plateau honing process – M.C. Malburg and J. Raja

Abstract The plateau honing operation is being widely used for finishing of cylinder liners for internal combustion engines. Plateau honing has been shown to significantly reduce the costly running-in period due to the fact that very little further modification of the texture is required once the liner is put into operation. In order to better…

Read More Characterization of surface texture generated by plateau honing process – M.C. Malburg and J. Raja
Comparison of motif combination with mean line and envelope systems used for surface profile analysis. – M.S. Shunmugam

Abstract The height and spacing characteristics of the surface profile influence the functional behaviour of the manufactured part. A new method known as motif combination has been recommended in French standards to obtain the height and spacing characteristics of the surface profiles. An attempt has been made in this paper to compare motif combination techniques…

Read More Comparison of motif combination with mean line and envelope systems used for surface profile analysis. – M.S. Shunmugam
Two-and three-dimensional analyses of surfaces according to the E-system – M.S. Shunmugam, and V. Radhakrishnan

Abstract The E-system of roughness measurement can be used either for a two-dimensional or a three-dimensional assessment of surface roughness. The procedure for computing the two- and three-dimensional envelopes from digitized profiles is briefly explained. This method will be useful for verifying the results obtained by practical instruments. The filtering characteristic of the E-system, when…

Read More Two-and three-dimensional analyses of surfaces according to the E-system – M.S. Shunmugam, and V. Radhakrishnan
Applications of Morphological Operations in Surface Metrology and Dimensional Metrology – Shan Lou, Xiangqian Jiang, Paul J. Scott

Abstract In contrast to the widely used mean-line based evaluation techniques, the capabilities of morphological methods are not fully recognized in practice. Morphological operations, eg dilation, erosion, closing and opening, are useful tools in surface metrology and dimensional metrology. This paper presents a variety of novel applications of morphological operations in association with several of…

Read More Applications of Morphological Operations in Surface Metrology and Dimensional Metrology – Shan Lou, Xiangqian Jiang, Paul J. Scott
Accurate Calibration of Surface Texture and Roundness Mesuring Instruments – R.C. Spragg

Abstract Some of the finer points to be taken into consideration when accurately calibrating surface texture and roundness measuring instruments are discussed. Consideration is given to such things as stylus condition, linearity, range switching accuracy, frequency response, and overall sensitivity. The paper concludes with a brief account of an experiment to determine roundness errors to…

Read More Accurate Calibration of Surface Texture and Roundness Mesuring Instruments – R.C. Spragg
Conformal Sensor Measurement

This type of measurement system uses a soft, high resolution, elastomeric sensor that conforms to the shape of the test surface. The deflection of the sensor can be read to record a high-resolution, 3D map of the surface.

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Focus Variation Microscope

A focus variation measurement system has a small depth of focus. during a measurement, the optical system scans vertically. By analyzing data acquired at various focal planes, the system can determine the height at each measurement point, providing both 3D texture information and form/shape data.

Read More Focus Variation Microscope