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Lamb wave mode conversion in CFRP plates

Mook, Gerhard and Willberg, Christian and Gabbert, Ulrich and Pohl, Jürgen (2014) Lamb wave mode conversion in CFRP plates. 11th European Conference on Non-Destructive Testing, October 6-10, 2014, Prague, Czech Republic.

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Abstract

Lamb waves are promising for Structural Health Monitoring (SHM) in plate-like components from carbon fiber-reinforced plastics (CFRP). They may be excited and received by plane piezoelectric actuators embedded or attached to the material. Several Lamb wave modes are known, among them the basic symmetric and anti-symmetric mode. Under certain circumstances these modes may convert into each other. This conversion may be used as an indication of defect presence and for defect characterization. The paper focuses on the conditions of Lamb wave conversion at defects and internal material structures. So, the cases of local defects as potential sources of mode conversion are regarded and the phenomenon of continuous mode conversion (CMC) in CFRP and current results of its characterization will be presented.

Item URL in elib:https://elib.dlr.de/91033/
Document Type:Conference or Workshop Item (Speech)
Title:Lamb wave mode conversion in CFRP plates
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mook, GerhardOtto-von-Guericke-Universität MagdeburgUNSPECIFIED
Willberg, ChristianFA-STMUNSPECIFIED
Gabbert, UlrichOtto-von-Guericke-Universität MagdeburgUNSPECIFIED
Pohl, JürgenHochschule AnhaltUNSPECIFIED
Date:2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Piezoelectric actuators, scanning laser vibrometer, FEM, SAFE, continuous mode conversion
Event Title:11th European Conference on Non-Destructive Testing
Event Location:Prague, Czech Republic
Event Type:international Conference
Event Dates:October 6-10, 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation, L - Structures and Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Willberg, Dr.-Ing. Christian
Deposited On:13 Oct 2014 08:08
Last Modified:13 Oct 2014 08:08

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