Sensors 2010, 10(9), 8291-8303; doi:10.3390/s100908291
Article

A Flexible Strain Sensor Based on a Conductive Polymer Composite for in situ Measurement of Parachute Canopy Deformation

1 University Lille Nord de France, F-59000 Lille, France 2 ENSAIT, GEMTEX, F-59100 Roubaix, France
* Author to whom correspondence should be addressed.
Received: 15 July 2010; in revised form: 5 August 2010 / Accepted: 25 August 2010 / Published: 2 September 2010
(This article belongs to the Section Physical Sensors)
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Abstract: A sensor based on a Conductive Polymer Composite (CPC), fully compatible with a textile substrate and its general properties, has been developed in our laboratory, and its electromechanical characterization is presented herein. In particular the effects of strain rate (from 10 to 1,000 mm/min) and of repeated elongation cycles on the sensor behaviour are investigated. The results show that strain rate seems to have little influence on sensor response. When submitted to repeated tensile cycles, the CPC sensor is able to detect accurately fabric deformations over each whole cycle, taking into account the mechanical behaviour of the textile substrate. Complementary information is given concerning the non-effect of aging on the global resistivity of the CPC sensor. Finally, our sensor was tested on a parachute canopy during a real drop test: the canopy fabric deformation during the critical inflation phase was successfully measured, and was found to be less than 9%.
Keywords: carbon black; conductive polymer composite; flexible sensor; textile strain gauge

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MDPI and ACS Style

Cochrane, C.; Lewandowski, M.; Koncar, V. A Flexible Strain Sensor Based on a Conductive Polymer Composite for in situ Measurement of Parachute Canopy Deformation. Sensors 2010, 10, 8291-8303.

AMA Style

Cochrane C, Lewandowski M, Koncar V. A Flexible Strain Sensor Based on a Conductive Polymer Composite for in situ Measurement of Parachute Canopy Deformation. Sensors. 2010; 10(9):8291-8303.

Chicago/Turabian Style

Cochrane, Cédric; Lewandowski, Maryline; Koncar, Vladan. 2010. "A Flexible Strain Sensor Based on a Conductive Polymer Composite for in situ Measurement of Parachute Canopy Deformation." Sensors 10, no. 9: 8291-8303.

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