Development of material-integrated actuator-sensor-arrays for obstacle sensing

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

The specific manufacturing processes of fiber-reinforced plastics (FRP) enable a seamless integration of sensors and actuators, allowing realization of tasks that are additional to the main load bearing functionality, for example, obstacle distance sensing. Through the integration of several distributed piezoelectric actuators into a FRP component and their time-shifted actuation, a directional plate wave can be generated. The interaction of the plate wave with the surrounding medium induces a sound wave, which - reflected from an obstacle - returns toward the component and forms a plate wave, that is, detected by another integrated transducer array. Since the time between the generation of the initial wave and the reflected wave appearance is a linear function of the distance to the obstacle, an appropriate evaluation enables the realization of the obstacle distance sensing functionality. Presented experimental investigations are conducted to confirm the feasibility of the above described operational principle. It is shown that a directional generation of plate waves and their radiation in surrounding medium can be achieved using a suitable actuator-sensor arrangement. The operating principle is successfully demonstrated for exemplary textile-reinforced composite plate with integrated piezoceramic actuator-sensor transducer arrays.

Details

Original languageEnglish
Article number1800475
Number of pages6
JournalAdvanced Engineering Materials
Volume20
Issue number12
Publication statusPublished - 21 Dec 2018
Peer-reviewedYes

External IDs

Scopus 85053854350
ORCID /0000-0003-2834-8933/work/142238202
ORCID /0000-0002-8854-7726/work/142242048
WOS 000454114900027

Keywords

Keywords

  • obstacle sensing, piezoelectric transducers, smart composites, Obstacle sensing, Piezoelectric transducers, Smart composites