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Active Vibration Damping in Structural Aluminum Die Castings via Piezoelectricity – Technology and Characterization
Author(s) -
Schwankl Matthias,
Kimme Simon,
Pohle Carina,
Drossel WelfGuntram,
Körner Carolin
Publication year - 2015
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201400367
Subject(s) - materials science , laser doppler vibrometer , die casting , piezoelectricity , vibration , casting , aluminium , characterization (materials science) , signal (programming language) , acoustics , mechanical engineering , composite material , structural engineering , optoelectronics , engineering , computer science , nanotechnology , wavelength , physics , distributed feedback laser , programming language
Piezoelectric modules are integrated in structural aluminum components (AlSi9Cu3(Fe)) using high‐pressure die casting for damping purposes. Investigations using X‐ray analysis indicate a damage free integration and good casting quality despite very harsh casting conditions. FE simulations provide information about the mode shapes of the casting and could be confirmed by investigations using a 3D laser scanning vibrometer (LSV). Frequency sweeps show that many modes are stimulated by applying voltage to the piezoelectric module. It is demonstrated, how an actively induced vibration signal in the casting is reduced by creating a phase‐shifted counteracting vibration with the help of the integrated module.