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Cavity width: mm Angle of incidence: °

Leaf 1


Thickness:
mm
Density:
kg/m3

Leaf 2


Thickness:
mm
Density:
kg/m3


Result mass-spring resonance:



Leaf 1
Leaf 2


Based on Eric Desart's MSMresonance03.xls file.



Density Values for Materials
Material Density (ρ, rho)
kg / m3
Air 1.2
Aluminum 2700
Aluminum Alloy 6061-T6 2710
Aluminum Alloy 7075-T6 2800
Asphalt 2120
Brass 8400
Red Brass (85% Cu, 15% Zn) 8740
Yellow Brass (65% Cu, 35% Zn) 8470
Brick, common 1800
Tin Bronze 8800
Manganese  Bronze 8360
Carbon, diamond 3250
Carbon, graphite 2000 - 2500
Coal 1200 - 1500
Concrete 2200 - 2400
Copper, commercial 8300
Cotton 448
Foam, mattress 35-75
Felt 50-65
Gypsum board 530 - 1000 (12.5mm =~ 650)
Gypsum blocks 850 - 1200
Glass, 98% silica 2190
Glass, plate 2500
Glass, wool 200
Gold 19300
Granite 2750
Hydrogen 0.0898
Helium 0.179
Ice (0°C) 917
Invar 8050
Iron, cast 7272
Limestone 2711
Lead 11340
Magnesium, 2% Mn 1778
Marble (Avg. Values) 2770
Monnel Alloy 400 (Ni-Cu) 8830
Nickel, 10% Cr 8666
Paper 700
Plexiglas 1180
Polystyrene 920
Polyvinyl chloride 1380
Rubber, soft 1100
Salt, rock 2100 - 2500
Sand, dry 1500
Sandstone (Avg. values) 2300
Silicon 2330
Silver, 99.9 % Ag 10524
Snow, firm 560
Stainless steel (St 304) 7820
Structural steel (A36) 7860
Timber, Douglas-fir 470
Timber, Spruce, Sitka 415
Timber, Shortleaf pine 500
Timber, Western white pine 390
Timber, White oak 690
Timber, Red oak 660
Timber, Western hemlock 440
Timber, Redwood 415
Tin 7304
Titanium Alloy (6% Al, 4% V) 4730
Tungsten 19300
Wool 100
Water (fresh) 1000 (4 °)
Water (salt) 1030
Zinc 7144