Accuracy of the Iscan Pressure Measurement System

Abstract

The Iscan system can be used to measure continuously changing force and pressure distribution at biomechanical interfaces. The objective of this study was to determine bow accurately the Iscan system measures force and force distribution in static loading. Known absolute and relative loads were applied to Iscan sensors using custom-built indentors loaded in a servohydraulic test machine. Over the 35 trials, the mean error for the absolute measurement of force was 6.5% and the standard deviation of the error was 4.4%. The mean error in the force distribution measurement over the 25 trials was 0.86% and the standard deviation of the error was 0.58%. The results suggest that, when calibration, conditioning and testing protocols are developed carefully, the Iscan system measures force and pressure distribution more accurately than Fuji Prescale film.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2001
Accession Number
ADP011006

Entities

People

  • David R Wilson
  • Mark J. Eichler
  • Wilson C. Hayes

Organizations

  • Queen's University

Tags

Communities of Interest

  • Biomedical
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Calibration
  • Computers
  • Data Acquisition
  • Data Analysis
  • Dynamic Loads
  • Errors
  • Load Cells
  • Measurement
  • Mechanical Engineering
  • Personal Computers
  • Pressure Distribution
  • Pressure Measurement
  • Standards
  • Technical Information Centers
  • Test And Evaluation
  • Test Methods

Readers

  • Approximation Theory.
  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Structural Health Monitoring of Composite Structures.