Surface Topography: Metrology and Properties

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2021

Abhijeet Gujrati, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, 3700 O'Hara St, Pittsburgh, PA, 15261, United States of America
Tevis D. B. Jacobs, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, 3700 O'Hara St, Pittsburgh, PA, 15261, United States of America
Antoine Sanner, Department of Microsystems Engineering, University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany; Cluster of Excellence livMatS, Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
Subarna R. Khanal, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, 3700 O'Hara St, Pittsburgh, PA, 15261, United States of America
Nicolaie Moldovan, Alcorix Co., 14047 Franklin Ct., Plainfield, IL 60544, United States of America
Hongjun Zeng, Alcorix Co., 14047 Franklin Ct., Plainfield, IL 60544, United States of America; Aqua via Rock LLC, 712 Muirhead Ct., Naperville, IL 60565, United States of America
Lars Pastewka Department of Microsystems Engineering, University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany; Cluster of Excellence livMatS, Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
Surface Topography: Metrology and Properties, Journal Year: 2021, Volume and Issue: 9(1), P. 1 - 1

Published: Jan. 1, 2021

The surface topography of diamond coatings strongly affects surface properties such as adhesion, friction, wear, and biocompatibility. However, the understanding of multi-scale topography, and its effect on properties, has been hindered by conventional measurement methods, which capture only a single length scale. Here, four different polycrystalline diamond coatings are characterized using transmission electron microscopy to assess the roughness down to the sub-nanometer scale. Then these measurements are combined, using the power spectral density (PSD), with conventional methods (stylus profilometry and atomic force microscopy) to characterize all scales of topography. The results demonstrate the critical importance of measuring topography across all …

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S Lou, EPSRC Future Metrology Hub, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
Z Zhu, Advanced Forming Research Centre, National Manufacturing Institute Scotland, Renfrewshire, PA4 9LJ, United Kingdom
W Zeng, EPSRC Future Metrology Hub, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
C Majewski, EPSRC MAPP Future Manufacturing Hub, University of Sheffield, Sheffield, S10 2TN, United Kingdom
P J Scott, EPSRC Future Metrology Hub, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
X Jiang EPSRC Future Metrology Hub, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
Surface Topography: Metrology and Properties, Journal Year: 2021, Volume and Issue: 9(1), P. 1 - 1

Published: Sept. 1, 2021

Surface topography of additively manufactured components often contains 3D features, e.g. particles, open surface pores. X-ray computed topography can capture these features, allowing measurement data to be used for 3D surface texture characterisation. On the basis of the newly developed 3D surface texture parameters, this paper investigates material ratio curves of the surfaces produced by additive manufacturing processes, i.e. selective laser melting and high speed sintering. The material ratio curves of these surfaces vary in their shapes, depending on the specific process and associated process parameters, as well as surface orientations. Re-entrant topography features can result in recess shapes on …

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2020

Ping Lu, National Centre for Advanced Tribology, University of Southampton, SO17 1BJ, Southampton, United Kingdom
Robert J K Wood National Centre for Advanced Tribology, University of Southampton, SO17 1BJ, Southampton, United Kingdom
Surface Topography: Metrology and Properties, Journal Year: 2020, Volume and Issue: 8(4), P. 1 - 1

Published: Jan. 1, 2020

Surface textures have been of great interest within the tribology community with nearly 1500 papers published on this topic in the past two decades. With the pursuit of low emissions and environmental sustainability, the application of surface texturing to mechanical systems to lower friction and control wear is attracting increasing attention. There is no doubt that certain textured surfaces can have a beneficial effect on tribological performance but it is widely agreed that the optimization of textures should be carried out based on specific requirements of applications. The purpose of this review article is to summarize the current state of …

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2016

Larisa R G DeSantis Department of Earth and Environmental Sciences, Vanderbilt University, Nashville, TN, USA
Surface Topography: Metrology and Properties, Journal Year: 2016, Volume and Issue: 4(2), P. 1 - 12

Published: April 1, 2016

Dietary information of fossil mammals can be revealed via the analysis of tooth morphology, tooth wear, tooth geochemistry, and the microscopic wear patterns on tooth surfaces resulting from food processing. Although dental microwear has long been used by anthropologists and paleontologists to clarify diets in a diversity of mammals, until recently these methods focused on the counting of wear features (e.g., pits and scratches) from two-dimensional surfaces (typically via scanning electron microscopes or low-magnification light microscopes). The analysis of dental microwear textures can instead reveal dietary information in a broad range of herbivorous, omnivorous, and carnivorous mammals by characterizing microscopic …

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2015

T V Vorburger, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899, USA
J Song, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899, USA
N Petraco City University of New York, John Jay College and The Graduate Center, New York, NY 10019, USA
Surface Topography: Metrology and Properties, Journal Year: 2015, Volume and Issue: 4(1), P. 2 - 35

Published: Oct. 6, 2015

The application of surface topography measurement methods to the field of firearm and toolmark analysis is fairly new. The field has been boosted by the development of a number of competing optical methods, which has improved the speed and accuracy of surface topography acquisitions. We describe here some of these measurement methods as well as several analytical methods for assessing similarities and differences among pairs of surfaces. We also provide a few examples of research results to identify cartridge cases originating from the same firearm or tool marks produced by the same tool. Physical standards and issues of traceability are …

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Mark A Purnell, UniversityofLeicester, DepartmentofGeology,Leicester,UK
Laurent P G Darras UniversityofLeicester, DepartmentofGeology,Leicester,UK
Surface Topography: Metrology and Properties, Journal Year: 2015, Volume and Issue: 4(1), P. 1 - 1

Published: Jan. 1, 2015

An understanding of how extinct animals functioned underpins our understanding of past evolutionary events, including adaptive radiations, and the role of functional innovation and adaptation as drivers of both micro- and macroevolution. Yet analysis of function in extinct animals is fraught with difficulty. Hypotheses that interpret molariform teeth in fishes as evidence of durophagous (shell-crushing) diets provide a good example of the particular problems inherent in the methods of functional morphology. This is because the assumed close coupling of form and function upon which the approach is based is weakened by, among other things, behavioural flexibility and the absence of …

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