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Piezoceramic Honeycomb Actuators

Melcher, Jörg (2012) Piezoceramic Honeycomb Actuators. In: Adaptive, Tolerant and Efficient Composite Structures Springer-DLR-Reihe „Research Topics in Aerospace", 1. Verlag: Springer Berlin Heidelberg; Auflage: 2012 . pp. 107-116. ISBN ISBN-10: 3642291899 ; ISBN-13: 978-3642291890.

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Official URL: http://www.dlr.de/fa/desktopdefault.aspx/tabid-7871/13411_read-34521/

Abstract

The success of active vibration control in adaptronics decisively depends on the performance of the actuators used as multifunctional structural elements. DLR`s concept of impedance matched actuators proposes novel actuators in honeycomb design. The partitions of their hexagonal cells are made of piezoceramic materials. The honeycomb geometry guarantees lightweight properties with nearly perfect load distributions in the plane perpendicular to the cell tubes. Furthermore there is a dynamic flexibility in this plane even when the static stiffness is very high. New fabrication methods are required to realize honeycomb actuators with very small cells, low wall thicknesses and perfect rounded corners. In order to fulfill the lightweight conditions self-organizing effects were used to guarantee optimal 3D geometries. In this context, a local thermal treatment of ceramic structures by employing lasers initiates self-organizing mechanisms via material flow. Experimental comparisons between piezoelectric honeycomb actuators and conventional monolithic actuators demonstrate a reduction of electrical power by a factor of 500. Honeycomb actuators seem to be the most promising candidate for technical applications that require low energy consumption.

Document Type:Book Section
Title:Piezoceramic Honeycomb Actuators
Authors:
AuthorsInstitution or Email of Authors
Melcher, Jörgjoerg.melcher@dlr.de
Date:30 June 2012
Journal or Publication Title:Adaptive, Tolerant and Efficient Composite Structures
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:1
Page Range:pp. 107-116
Editors:
EditorsEmail
Wiedemann, Martin martin.wiedemann@dlr.de
Sinapius, Michaelmichael.sinapius@dlr.de
Publisher:Verlag: Springer Berlin Heidelberg; Auflage: 2012
Series Name:Springer-DLR-Reihe „Research Topics in Aerospace"
ISBN:ISBN-10: 3642291899 ; ISBN-13: 978-3642291890
Status:Published
Keywords:piezoceramics, actuator, honeycomb, active control, impedance, self-organizing fabrication, photronics, diamond lattice structure, laser sintering
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Dr.-Ing. Jörg Melcher
Deposited On:20 Jun 2012 09:50
Last Modified:20 Jun 2012 09:50

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