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Full-Text Articles in Mechanical Engineering
Force And Slip Detection With Direct-Write Compliant Tactile Sensors Using Multi-Walled Carbon Nanotube/Polymer Composites, Morteza Vatani, Erik Engeberg, Jae-Won Choi
Force And Slip Detection With Direct-Write Compliant Tactile Sensors Using Multi-Walled Carbon Nanotube/Polymer Composites, Morteza Vatani, Erik Engeberg, Jae-Won Choi
Dr. Jae-Won Choi
A mechanically compliant tactile sensor has been developed through direct-write (DW) deposition of a flexible conductive nanocomposite embedded between flexible polyurethane materials. Dispersion of multi-walled carbon nanotubes (MWCNTs) in a flexible and photocurable monomer introduced electrical and piezoresistive properties to the polymer which was used for the flexible conductive nanocomposite. Dispensing experiments were performed using the developed DW system to precisely create and embed the sensor elements between polyurethane substrates. From the experimental results, several flexible sensors including highly stretchable sensor elements (wires) were fabricated. Experiments were also performed to show that the sensor could detect applied forces at distinct …
Hybrid Additive Manufacturing Of 3d Compliant Tactile Sensors, Morteza Vatani, Erik Engeberg, Jae-Won Choi
Hybrid Additive Manufacturing Of 3d Compliant Tactile Sensors, Morteza Vatani, Erik Engeberg, Jae-Won Choi
Dr. Jae-Won Choi
A resistance based conformal, compliant multi-layer tactile sensor was designed and built layer by layer using a hybrid manufacturing process. A highly stretchable, photocurable, piezoresistive sensing material was deposited on a conformal, soft molded structure using a direct printing device. The principle of the sensor is based on detecting the changes in resistance as it is deformed. The fabricated tactile sensor consists of two layers of sensing elements within the 3D skin structure where the sensing elements in the top layer are orthogonally placed atop the bottom layer. Due to the multiple layers of wires, the sensor can potentially detect …