Method of measuring the vibration damping capability

2002 ◽  
Vol 112 (5) ◽  
pp. 1738
Author(s):  
Robert P. Uhlig
Keyword(s):  
Vibration Damping ◽  
Damping Capability

scholarly journals Vibration Damping Behavior of Composite Laminates Interleaved with PZT- and SMA-Particle-Dispersed Resin Mixture Films

2021 ◽  
Vol 11 (15) ◽  
pp. 7155
Author(s):  
Jae-Min Jung ◽  
Da-Som Lee ◽  
Sung-Ha Kim ◽  
Sung-Nam Moon ◽  
Woo-Il Lee ◽  
...  
Keyword(s):  
Composite Laminates ◽  
Particle Dispersion ◽  
Vibration Damping ◽  
Damping Capacity ◽  
Particle Loading ◽  
Dispersed Particles ◽  
Damping Behavior ◽  
Tan Δ ◽  
Damping Capability ◽  
Pzt Ceramic

In this study, functional particles such as piezoelectric (PZT) ceramic and shape memory alloy (SMA) particles have been incorporated in composite laminates to accelerate the loss of vibration energy. PZT ceramic particles and SMA particles are mixed with epoxy resin and rolled into a film shape before they are interleaved between prepreg plies for better distribution of the particles. Loss factor (tan δ) was measured with various particle loadings to verify the effectiveness of interleaving in the vibration damping of laminate specimens. It was observed that there existed an optimal content for maximizing the damping ability avoiding an aggregation of the particles. In addition, when PZT and SMA particles are applied simultaneously, PZT could enhance the vibration damping capability of SMA because PZT particles could generate thermal energy, and it would accelerate the phase change of the SMA particles. In this research, the effective way for enhancing the particle dispersion was suggested, and the particle loading could be controlled by finding an optimal content. Flexural moduli of the specimens were also measured, and they exhibited no change as the content of the particles increases. Therefore, dispersed particles used in this study increased the vibration damping capacity without reducing the mechanical properties.

Passive Vibration Damping Materials: Piezoelectric Ceramic Composites for Vibration Damping Applications.

1995 ◽  
Author(s):  
Shoko Yoshikawa ◽  
R. Meyer ◽  
J. Witham ◽  
S. Y. Agadda ◽  
G. Lesieutre
Keyword(s):  
Piezoelectric Ceramic ◽  
Ceramic Composites ◽  
Vibration Damping ◽  
Damping Materials
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