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Design and Fabrication of a Piezoresistive Fabric Sensor for Ergonomic Analyses

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Title: Design and Fabrication of a Piezoresistive Fabric Sensor for Ergonomic Analyses
Author: Harris, Luke
Department: School of Engineering
Program: Engineering
Advisor: Oliver, MicheleHayward, Gordon
Abstract: Hand forces are extremely difficult to measure due to the unique interaction they form with complex surfaces. These forces have been linked to an increased risk of developing musculoskeletal disorders even for low forces (2-10 N). Currently available instrumentation does not measure hand forces well on curved surfaces. This thesis presents the design and validation of a flexible piezoresisitive fabric tactile sensor for quantifying hand forces on curved surfaces. Results showed the sensor exhibited a stable, logarithmic calibration curve (R^2 = 0.99) and a high resistance to creep, hysteresis and cyclic loading conditions. Validation testing illustrated a linear calibration relationship (R^2 range = 0.970 – 0.978) with strong correlations between strain gauge and sensor predictions (R^2 range = 0.959 - 0.998), indicating the sensor was an accurate predictor of contact forces applied by the hand.
URI: http://hdl.handle.net/10214/7847
Date: 2014-01
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