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MM: Fachverband Metall- und Materialphysik

MM 18: Poster Session 2

MM 18.40: Poster

Dienstag, 6. September 2022, 17:30–20:00, P2

3D Printed One Piece Surface Alteration Sensor with Galvanic Isolation — •Michael Feige and Sonja Schöning — Bielefeld Institute for Applied Materials Research (BIfAM), Bielefeld University of Applied Sciences, Department of Engineering Sciences and Mathematics

More recently it is possible to combine conductive and non-conductive materials in one 3D print process. This allows printing of complex structures like PCBs, 3D coils, transformers, capacitors or high frequency components like antennas or transmission lines. Furthermore it is possible to combine those components to build highly specialized sensors in one production step.

We developed a concept for a sensor which, in its specialized form, could be used for detection of mechanical, chemical or biological alteration of surfaces such as abrasion, material degradation or separation. The detection method is based on an electrical, inductive readout while maintaining a sufficient galvanic isolation between the sensing area and the readout circuit.

In this contribution an actual sensor device capable of detecting corrosion is presented, which was designed, printed and tested with successful results. The sophisticated design outweighs the lack of high electrical conductivity and high magnetic permeability within the range of printable materials by the ability of the printer to precisely integrate the conductive material into the insulating material.