Vibration Properties of a Steel-PMMA Composite Beam

Table 1

Comparison of the attenuation of the output points.

Point position	Root mean square (dB)	Average (dB)
Point 1	20.61	24.25
Point 2	20.73	24.66
Point 3	21.06	25.32
Point 4	22.55	26.85
Point 5	22.39	26.26
Point 6	14.61	19.14