Mechanical quality factors of fused silica resonators

1998 ◽  
Vol 69 (10) ◽  
pp. 3681-3689 ◽  
Author(s):  
William J. Startin ◽  
Mark A. Beilby ◽  
Peter R. Saulson
Keyword(s):  
Fused Silica ◽  
Quality Factors ◽  
Mechanical Quality

Derivation of Magnetostrictive Losses from Admittance Spectra

2012 ◽  
Vol 490-495 ◽  
pp. 922-926
Author(s):  
Meng Lun Tao ◽  
Yuan Zhuang ◽  
Ding Fang Chen ◽  
Seyit O. Ural ◽  
Quan Guo Lu ◽  
...  
Keyword(s):  
Magnetic Loss ◽  
Coupling Loss ◽  
Quality Factors ◽  
Loss Mechanism ◽  
Mechanical Quality ◽  
Impedance Curve ◽  
Relationship Of ◽  
The Relationship ◽  
Elastic Loss ◽  
Elastic Dielectric

There are three types of losses for magnetostrictors, elastic loss, magnetic loss and piezomagnetic coupling loss, similar to the loss mechanism of a piezoelectric (elastic, dielectric and piezoelectric losses) that our group has established recent years. By introducing these losses factors we can characterize magnetostrictive losses using complex parameters. Here we derived the relationship of mechanical quality factors and losses factor based on admittance spectra expression we have established previously. By measuring accurately the mechanical quality factors QA for the resonance and QB for the anti-resonance in the admittance/impedance curve, we can derive these three physical losses to characterize magnetostrictive hysteresis loss.

Quality Factors of Bare and Metal-Coated Quartz and Fused Silica Torsion Fibers

2006 ◽  
Author(s):  
C. A. Hagedorn ◽  
S. Schlamminger ◽  
J. H. Gundlach
Keyword(s):  
Fused Silica ◽  
Quality Factors

Characterization of Magnetostrictive Losses Using Complex Parameters

2012 ◽  
Vol 490-495 ◽  
pp. 985-989
Author(s):  
Meng Lun Tao ◽  
Yuan Zhuang ◽  
Ding Fang Chen ◽  
Seyit O. Ural ◽  
Quan Guo Lu ◽  
...  
Keyword(s):  
Magnetic Loss ◽  
Coupling Loss ◽  
Quality Factors ◽  
Loss Mechanism ◽  
Mechanical Quality ◽  
Impedance Curve ◽  
Key Issues ◽  
Elastic Loss ◽  
Elastic Dielectric

Loss characterization in magnetostrictors is one of the key issues for realizing reliable magnetomechanical transducers. Concerning with the hysteresis minor loop within a relatively linear area of magnetostrictive curve, there are three types of losses, elastic loss, magnetic loss and piezomagnetic coupling loss, similar to the loss mechanism of a piezoelectric (elastic, dielectric and piezoelectric losses) that our group has established recent years. By measuring accurately the mechanical quality factors QA for the resonance and QB for the anti-resonance in the admittance/impedance curve, we can derive these three physical losses. By introducing these losses factors we can characterize magnetostrictive losses using complex parameters.

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