Mechanical Engineering Faculty Research

Title

Conformal Direct-Print of Piezoresistive Polymer/Nanocomposites for Compliant Multi-Layer Tactile Sensors

Document Type

Article

Publication Date

Winter 12-2014

Abstract

A conformal, compliant and multi-layer tactile sensor was built layer by layer using a hybrid manufacturing process including conformal Direct-Print (DP) technology and layer by layer soft molding process with a developed piezoresistive polymer/nanocomposite. A multi-layer conformal skin structure of the sensor was created using the soft molding process along with a highly flexible rubber material. Two layers of sensing elements were designed, where the sensing elements in the lower sensing layer were orthogonally placed against those in the upper sensing layer so that the sensing elements in two layers could cross each other with an insulating layer between them. A conformal printing algorithm was developed to advance the capability of DP technology. Thus, all the sensing elements were printed uniformly within the conformal skin structure. Several experiments on position detection were performed to evaluate the performance of the fabricated conformal sensor. The results showed that the sensor can detect locations of external forces applied on the sensor surface due to the multiple layers of sensing elements. It is concluded that the suggested manufacturing methods and developed materials are promising tools to develop conformal, compliant tactile sensors.

Publication Title

Additive Manufacturing

Volume

TBD

Issue

TBD

First Page

TBD

Last Page

TBD

Comments

Corrected proofs are Articles in Press that contain the authors' corrections. Final citation details, e.g., volume and/or issue number, publication year and page numbers, still need to be added and the text might change before final publication.