|
Acoustic Properties Of Materials |
|||||
|
Material |
Ultrasonic Velocity |
|
|||
|
Longitudinal (Compression) |
Transverse (Shear) |
Impedance |
|||
|
|
mm/us |
in/us |
mm/us |
in/us |
Z |
|
METALS |
|
|
|
|
|
|
Aluminum
1100-0 |
6.229 |
0.248 |
3.073 |
0.121 |
17.1 |
|
Aluminum
2024-T4 |
6.375 |
0.251 |
3.15 |
0.124 |
17.6 |
|
Aluminum
6061-T6 |
6.299 |
0.248 |
3.15 |
0.124 |
17 |
|
Beryllium |
12.878 |
0.507 |
8.89 |
0.35 |
23.5 |
|
Brass |
4.369 |
0.172 |
2.108 |
0.083 |
37.1 |
|
Bronze |
3.531 |
0.139 |
2.235 |
0.088 |
31.3 |
|
Copper |
4.75 |
0.187 |
2.337 |
0.092 |
42.5 |
|
Gold |
3.251 |
0.128 |
1.194 |
0.047 |
62.6 |
|
Inconel |
7.823 |
0.308 |
3.023 |
0.119 |
64.5 |
|
Iron - Cast |
3.505-5.588 |
0.138-0.220 |
2.210-3.200 |
0.087-0.126 |
24.3-41.2 |
|
Lead |
2.159 |
0.085 |
0.813 |
0.032 |
23.5 |
|
Magnesium |
5.461-5.791 |
0.215-0.228 |
3.023-3.099 |
0.119-0.122 |
9.24-10.6 |
|
Monel |
5.359 |
0.211 |
2.718 |
0.107 |
47.2 |
|
Nickel |
5.639 |
0.222 |
2.972 |
0.117 |
50 |
|
Silver |
3.607 |
0.142 |
1.6 |
0.063 |
37.8 |
|
Steel |
5.93 |
0.233 |
3.251 |
0.128 |
45.4 |
|
Titanium |
6.172 |
0.243 |
3.302 |
0.13 |
27.3 |
|
Zircaloy |
4.724 |
0.186 |
2.362 |
0.093 |
44.2 |
|
Zirconium |
4.648 |
0.183 |
2.261 |
0.089 |
30.1 |
|
POLYMERS |
|
|
|
|
|
|
Acrylics |
2.667-2.769 |
0.105-0.109 |
1.118-1.448 |
0.044-0.057 |
3.15-3.51 |
|
Cellulose
Acetate |
2.438 |
0.096 |
|
|
3.19 |
|
Nylon |
2.692 |
0.016 |
|
|
|
|
Phenolic |
1.422 |
0.056 |
|
|
1.9 |
|
Polycarbonate |
2.286 |
0.09 |
|
|
2.71 |
|
Polyethylene |
2.667 |
0.105 |
|
|
2.94 |
|
Polystyrene |
2.388 |
0.094 |
1.143 |
0.045 |
2.52 |
|
Rubber |
1.549 |
0.061 |
|
|
1.74 |
|
Silicone |
0.94 |
0.037 |
|
|
1.4 |
|
Teflon |
1.372 |
0.054 |
6.35 |
0.25 |
3 |
|
COMPOSITES |
|
|
|
|
|
|
Fiberglass |
3.15 |
0.124 |
1.727 |
0.068 |
6.04 |
|
Graphite/Epoxy |
2.972 |
0.117 |
1.956 |
0.077 |
4.65 |
|
Boron/Epoxy |
3.327 |
0.131 |
1.829 |
0.072 |
6.38 |
|
OTHER SOLIDS |
|
|
|
|
|
|
Alumina
(Al2O3) |
10.846 |
0.427 |
|
|
43.1 |
|
Concrete |
4.242-5.258 |
0.167-0.207 |
3.429 |
0.135 |
12.4 |
|
Glass |
5.766 |
0.227 |
|
|
14.5 |
|
Granite |
3.962 |
0.156 |
1.93 |
0.076 |
10.9 |
|
Tungsten
Carbide |
6.655 |
0.262 |
|
|
67.6 |
|
LIQUIDS |
|
|
|
|
|
|
Ethylene Glycol
|
1.626 |
0.064 |
|
|
1.8 |
|
Glycerin |
1.93 |
0.076 |
|
|
2.42 |
|
Oil |
1.753 |
0.069 |
|
|
1.51 |
|
Water |
1.473 |
0.058 |
|
|
1.48 |
|
Gases |
|
|
|
|
|
|
Air |
0.356 |
0.014 |
|
|
0.00041 |