Specimen name

Resonant frequency

Hz

Damping ratio

Ratio

Loss factor η

Factor

Dynamic Flexural Modulus E'

GPa

Loss modulus E”

GPa

CBE1

74.18

0.005

0.010

29.54

0.30

CBE2

72.78

0.005

0.010

29.34

0.29

CBE3

74.75

0.005

0.010

30.34

0.30

CZE1

61.78

0.006

0.012

24.82

0.30

CZE2

61.70

0.006

0.012

21.28

0.26

CZE3

60.38

0.008

0.016

20.05

0.32