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Non Contact Surface Roughness Measurement Instrumentation

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2007 Annual Conference & Exposition


Honolulu, Hawaii

Publication Date

June 24, 2007

Start Date

June 24, 2007

End Date

June 27, 2007



Conference Session

Novel Measurement Experiments

Tagged Division


Page Count


Page Numbers

12.1107.1 - 12.1107.9



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Paper Authors


Claudio Campana University of Hartford

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Research Engineer in Mechanical Engineering at Engineering Applications Center University of Hartford, College of Engineering Technology and Architecture. Received bachelor's degree from Boston University and Masters from University of Hartford. Area of research is in Cad/Cam Instrumentation and Mechatronics.

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Brian Derynioski University of Hartford

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Brian Derynioski
BSEET, Ward College of Technology, University of Hartford, 1985, currently pursuing Masters of Engineering degree in Electrical Engineering, currently employed full time as a contractor at Sikorsky Aircraft, supporting international Blackhawk/Seahawk sales.

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Saeid Moslehpour University of Hartford

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SAEID MOSLEHPOUR is an Assistant Professor in the Electrical and Computer Engineering
Department in the College of Engineering, Technology, and Architecture at the University of
Hartford. He holds PhD from Iowa State University and BS MS and EdSp degrees from Central Missouri State University. His areas of interest are logic design, CPLDs, FPGAs and distance learning.

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NOTE: The first page of text has been automatically extracted and included below in lieu of an abstract

Development of Non Contact Surface Roughness Measurement Instrumentation Abstract

This paper presents the design and implementation of a non-contact Surface Roughness probe from a pc based data acquisition system to a standalone measurement instrument system. The use of OrCAD PSpice is demonstrated for circuit design, analysis and PCB layout for the fabrication of the PCB board that will interface and drive the surface roughness probe.

Introduction: Need and Background

The demand for higher product quality requires continuous monitoring of various processes and product conditions. It is obvious that one of the essential aspects of quality control in many manufacturing operations is the measurement of surface finish quality of the machined parts during the manufacturing process. Variation in the texture of a critical surface of a part influences its ability to resist wear and fatigue, to assist effective lubrications to increase or decrease its friction and abrasive action with other parts, and to resist corrosion

Many techniques have been developed to measure surface roughness, which vary from the conventional profilometer to the recently developed laser diffraction technique. An attempt is made in this paper to present a simple, reliable and robust way of evaluating the roughness of an engineering surface regardless of the work piece orientation. The research has wide applications in manufacturing industries. One typical application suggested in this paper is the measurement of surface finish of an aircraft gas turbine rotor blade.

The original use of the Surface Roughness Probe was part of an inspection system, used on CNC / Robotic machines for Pratt and Whitney [1]. Currently, for analyzing surface roughness, the probe is connected to a PC via a data acquisition card running VisSim as shown in Figure 1. In this current configuration the probe is capable of reaching an instrument accuracy of ±0.025 µm for a Ra range of .05 to 0.4µm. Computer Interface Data Robot Acquisition Card

Workpiece Laser Probe


Figure 1. Surface Roughness Inspection system setup

Campana, C., & Derynioski, B., & Moslehpour, S. (2007, June), Non Contact Surface Roughness Measurement Instrumentation Paper presented at 2007 Annual Conference & Exposition, Honolulu, Hawaii. 10.18260/1-2--2857

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