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J Nanosci Nanotechnol. 2018 Mar 1;18(3):1782-1786. doi: 10.1166/jnn.2018.14989.

Development of a Spoke Type Torque Sensor Using Painting Carbon Nanotube Strain Sensors.

Author information

1
Department of Mechanical Design and Engineering, Pukyong National University, Busan, KS012, Korea.
2
Aircraft Structures Research Team, Korea Aerospace Research Institute, Daejeon, KS015, Korea.
3
Ocean System Engineering Research Division, KRISO, Daejeon, KS015, Korea.
4
Department of Image Science and Engineering, Pukyong National University, Busan, KS012, Korea.
5
Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, KS015, Korea.
6
Department of Mechanical Engineering, Korea University, Seoul, KS013, Korea.

Abstract

This study reports a hub-spoke type joint torque sensor involving strain gauges made of multiwalled carbon nanotubes (MWCNT). We developed the novel joint torque sensor for robots by means of MWCNT/epoxy strain sensors (0.8 wt%, gauge factor 2) to overcome the limits of conventional foil strain gauges. Solution mixing process was hired to fabricate a liquid strain sensor that can easily be installed on any complicated surfaces. We painted the MWCNT/epoxy mixing liquid on the hub-spoke type joint torque sensor to form the piezoresistive strain gauges. The painted sensor converted its strain into torque by mean of the installed hub-spoke structure after signal processing. We acquired sufficient torque voltage responses from the painted MWCNT/epoxy strain sensor.

PMID:
29448659
DOI:
10.1166/jnn.2018.14989

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