Characterisation of Areal Surface Texture ― Characterization and Case Studies

The function of a component part can be profoundly affected by its surface topography. There are many examples in nature of surfaces that have a well-controlled topography to affect their function. Examples include the hydrophobic effect of the lotus leaf, the reduction of fluid drag due to the riblet structure of shark skin, the directional adhesion of the gecko foot and the angular sensitivity of the multi-faceted fly eye. Surface structuring is also being used extensively in modern manufacturing. In this way many properties can be altered, for example optical, tribological, biological and fluidic. Previously, single line (profile) measurements were adequate to control manufacture of surfaces, but as the need to control the functionality of surfaces increases, there is a growing need for three-dimensional (areal) measurement and characterisation techniques. For this reason there has been considerable research, development and standardisation of areal techniques. This book will present the areal framework that is being adopted by the international community. Whereas previous books have concentrated on the measurement aspects, this book concentrates on the characterisation techniques, i.e. how to interpret the measurement data to give the appropriate (functional) information for a given task. The first part of the book presents the characterisation methods and the second part case studies that highlight the use of areal methods in a broad range of subject areas - from automobile manufacture to archaeology.ContentsIntroduction to Surface TopographyThe Areal Field ParametersThe Areal Feature ParametersAreal Filtering MethodsAreal Form RemovalAreal Fractal MethodsChoosing the Appropriate ParameterCharacterisation of Individual Areal FeaturesMulti-Scale Signature of Surface TopographyCorrelation of Areal Surface Texture Parameters to Solar Cell EfficiencyCharacterisation of Cylinder Liner Honing Textures for Production ControlCharacterisation of the Mechanical Bond Strength for Copper on Glass Plating ApplicationsInspection of Laser Structured Cams and ConrodsRoad Surfaces

Professor Richard Leach is a Principal Research Scientist at the National Physical Laboratory in the UK and a visiting professor at Loughborough University. He obtained a BSc in Applied Physics with Microelectronics and Computing from Kinston University in 1989, an MSc in Industrial Measurement Systems from Brunel University in 1994 and PhD in Surface Metrology from University of Warwick in 2000. He has been with NPL since 1990 and has current research interests in surface topography measurement, micro-coordinate metrology, high dynamic range sensing and computed tomography. Richard is on the Council of European Society of Precision Engineering and Nanotechnology, the IoN Advisory Board, the EPSRC Peer Review College, the International Committee on Measurements and Instrumentation and several international standards committees. He is the European Editor-in-Chief for Precision Engineering and Editor-in-Chief of Surface Topography: Metrology & Properties. He has over 180 publications including three textbooks. Richard is a Fellow of the Institute of Physics, a Fellow of the Institute of Nanotechnology and a Sustained Member of the American Society of Precision Engineers.