Center Impedance Method for Damping Measurement

Table 2

Specifications of thin bars used for Oberst and Center Impedance.

BATCH	R 690-64	R 690-64
Beam type	Oberst	Center impedance
Boundary condition	Cantilevered	Free-Free
Material density	1057 (kg/m^3)	1057 (kg/m^3)
Material thickness	0.00318 m	0.0030 m to 0.004 m
Beam length	0.2 m	0.305 m
Beam width	0.0127 m	0.0305 m