Table 7.

The vibration behavior of the composite material samples, reinforced by layers of shredded waste paper.

Free	A.0.x (Epoxy Resin)		A.1.x (60% Dammar)		A.2.x (70% Dammar)		A.3.x (80% Dammar)
Length	Frequency	Damping	Frequency	Damping	Frequency	Damping	Frequency	Damping
[mm]	$\mathit{\nu }$ [Hz]	$\mathit{\mu }$ [s${}^{-1}$]	$\mathit{\nu }$ [Hz]	$\mathit{\mu }$ [s${}^{-1}$]	$\mathit{\nu }$ [Hz]	$\mathit{\mu }$ [s${}^{-1}$]	$\mathit{\nu }$ [Hz]	$\mathit{\mu }$ [s${}^{-1}$]
120	114.3	10.05	103.9	11.62	98.1	13.20	93.4	14.98
140	84.2	7.36	74.6	8.71	72.5	9.66	69.2	11.02
160	65.8	5.40	57.6	6.52	55.6	7.70	53.1	8.02
180	52.2	4.52	48.2	5.05	44.3	6.01	42.0	6.82
200	42.4	3.42	38.6	4.31	34.8	4.62	34.1	5.52
220	36.4	2.89	30.5	3.22	29.0	3.82	28.4	4.33