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All issues Volume 9 (2025) Acta Acust., 9 (2025) 48 Full HTML
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Table 1.

The properties of stimuli: dimensions a×b, thickness h, bending stiffness D, Young's modulus E, Poisson ratio ν, surface mass density M, and loss damping factor η of vibrating panels. fM: cutoff frequency for simulation, SPL: mean A-weighted sound pressure level. “S.”, “No.”, and “Exc.” denote session, stimulus number, and excitation type. “Mech” and “Acous” refer to mechanical and acoustic excitations; “Mic” and “Sim” to microphone-recorded or simulated stimuli.

S. No. Material Exc. Status a×b [cm] h [mm] D [Nm] E [GPa] ν M [Kg/m2] η SPL [dB(A)]
1 1 Steel Mech Mic 40×60 0.85 11 200 0.29 6.37 0.0087 59.7
2 Aluminium Mech Mic 40×60 3 187 74 0.33 7.94 0.0158 59
3 Composite Laminate Mech Mic 40×60 3.6 150 35 0.3 5.42 0.0451 58.3
4 Composite Sandwich Mech Mic 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.5
5 Steel Mech Sim 40×60 0.85 11 200 0.29 6.37 0.0087 60.3
6 Aluminium Mech Sim 40×60 3 187 74 0.33 7.94 0.0158 58.8
7 Composite Laminate Mech Sim 40×60 3.6 150 35 0.3 5.42 0.0451 58.9
8 Composite Sandwich Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.4
2 1 Steel Acous Mic 33.9×29.2 2 64 210 0.29 11.70 0.005 58.8
2 Aluminium Acous Mic 33.9×29.2 5 938 80 0.33 12.50 0.02 59.4
3 Composite Aluminium Acous Mic 33.9×29.2 2 40 54 0.3 4.40 0.01 57.8
4 Steel Acous Sim 33.9×29.2 2 64 210 0.29 11.70 0.005 58.3
5 Aluminium Acous Sim 33.9×29.2 5 938 80 0.33 12.50 0.02 59.1
6 Composite Aluminium Acous Sim 33.9×29.2 2 40 54 0.3 4.40 0.01 59.1
3 1 Composite (fM: 10 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.4
2 Composite (fM: 2 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.8
3 Composite (fM: 3 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.4
4 Composite (fM: 4 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.7
5 Composite (fM: 5 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 58.4
6 Composite (fM: 6 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 58.3
7 Composite (fM: 7 kHz) Mech Sim 40×60 13.9 1034 4.2 0.3 1.92 0.0916 59.3

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