Additive Manufactured Strain Sensor Using Stereolithography Method with Photopolymer Material

Author:

Ertugrul Ishak1ORCID,Ulkir Osman2ORCID,Ersoy Sezgin3ORCID,Ragulskis Minvydas1ORCID

Affiliation:

1. Department of Mathematical Modelling, Kaunas University of Technology, 44138 Kaunas, Lithuania

2. Department of Electric and Energy, Mus Alparslan University, 49250 Mus, Turkey

3. Department of Mechatronic Engineering, Marmara University, 34565 Istanbul, Turkey

Abstract

As a result of the developments in additive manufacturing (AM) technology, 3D printing is transforming from a method used only in rapid prototyping to a technique used to produce large-scale equipment. This study presents the fabrication and experimental studies of a 3D-printed strain sensor that can be used directly in soft applications. Photopolymer-based conductive and flexible ultraviolet (UV) resin materials are used in the fabrication of the sensor. A Stereolithography (SLA)-based printer is preferred for 3D fabrication. The bottom base of the sensor, which consists of two parts, is produced from flexible UV resin, while the channels that should be conductive are produced from conductive UV resin. In total, a strain sensor with a thickness of 2 mm was produced. Experimental studies were carried out under loading and unloading conditions to observe the hysteresis effect of the sensor. The results showed a close linear relationship between the strain sensor and the measured resistance value. In addition, tensile test specimens were produced to observe the behavior of conductive and non-conductive materials. The tensile strength values obtained from the test results will provide information about the sensor placement. In addition, the flexible structure of the strain sensor will ensure its usability in many soft applications.

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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