## Treatise on materials science and technology, Volume 3 |

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Page 8

The general method of practical solution for a given crystalline material of density

p and second-order elastic constants cy is to solve Eqs. (28) and (29) for the Ajfc

components for the

The general method of practical solution for a given crystalline material of density

p and second-order elastic constants cy is to solve Eqs. (28) and (29) for the Ajfc

components for the

**wave normal**(crystallographic direction cosines /, m, n) of ...Page 16

(76) Thus Et = £, and consequently a = 1, 6 = 0, c = 0 (77) and again the energy

flows in the same direction as the

wave propagation in an unbounded linear elastic homogeneous isotropic solid, ...

(76) Thus Et = £, and consequently a = 1, 6 = 0, c = 0 (77) and again the energy

flows in the same direction as the

**wave normal**. Therefore, in summary of planewave propagation in an unbounded linear elastic homogeneous isotropic solid, ...

Page 20

and consequently c=l, b = 0, c = 0 (92) and the energy flows in the same direction

as the

= 0, £3 = 0, £T = El (93) and consequently a = l, b = 0, c = 0 (94) and again the ...

and consequently c=l, b = 0, c = 0 (92) and the energy flows in the same direction

as the

**wave normal**. For the transverse waves a = 0, /?2 + y2 = 1 and El = y"^ . E2= 0, £3 = 0, £T = El (93) and consequently a = l, b = 0, c = 0 (94) and again the ...

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