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

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Page 18

In the three special symmetry directions in cubic crystals three pure mode linear

elastic waves may propagate, while in all other directions quasilongitu- ... (85)

Thus wave vi is a

In the three special symmetry directions in cubic crystals three pure mode linear

elastic waves may propagate, while in all other directions quasilongitu- ... (85)

Thus wave vi is a

**pure mode longitudinal**wave since a = /=l, P = m = 0, y = n = 0.Page 51

If we rearrange Eqs. (60) we may write them in the form k + 2fi = pvl2, n = pv22, (

159) where p is the density and, as was shown in Chapter II, Section III, vl and v2

are the wave speeds associated with

If we rearrange Eqs. (60) we may write them in the form k + 2fi = pvl2, n = pv22, (

159) where p is the density and, as was shown in Chapter II, Section III, vl and v2

are the wave speeds associated with

**pure mode longitudinal**and pure mode ...Page 97

In particular, if we attempt to propagate a

(280) reduce to the form of Eq. (196) given by p0u - auaa = Puauaa (281) with a

perturbation solution after one iteration given by Eq. (207) as (kA)2B u(a,t) ...

In particular, if we attempt to propagate a

**pure mode longitudinal**wave only Eqs.(280) reduce to the form of Eq. (196) given by p0u - auaa = Puauaa (281) with a

perturbation solution after one iteration given by Eq. (207) as (kA)2B u(a,t) ...

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