Internet based Surface Finish Algorithm Testing System

Son H. Bui, T. Brian Renegar, Theodore V. Vorburger
Precision Engineering Division, Surface & Microform Metrology
National Institute of Standards and Technology, Gaithersburg MD 20899, USA

Mark C. Malburg
Digital Metrology Solutions, Inc., 2024 Iroquois Trail, Columbus, IN 47203, USA

Surface measurement instruments such as stylus profilers and optical profilers are used to characterize the roughness of surfaces. Most of the measurement instruments are microcomputer-based systems, which contain both surface analysis software and database/data storage.  Each measurement instrument has its own analysis software and data format. When a surface is measured, the measurement instrument generates a data file and stores it on a local disk.  The data file is then analyzed by the analysis software provided in the surface measurement instrument. The analysis algorithm may not be verified and different implementations can yield differences in output parameters.  Hence, there is a need for a standards organization to help ensure traceability in algorithm development by providing and maintaining a set of master algorithms and data sets for companies, universities, and instrument manufacturers to compare and validate their surface analysis systems.  This paper presents  the development of peer-reviewed software and a specimen database for parameter evaluation and algorithm verification in the area of surface texture. The software and specimen database will be located and run at the National Institute of Standards and Technology (NIST), USA. Companies, universities, and instrument manufacturers will have remote access to standard data sets and analysis tools through the Internet. The software and the database will serve to validate the accuracy of the implementation of algorithms as well as the calculation of surface parameters in industry.