Yu.G.Bezimyanniy, E.A.Kozirackiy
Representing the properties of fibrous materials by the elastic wave velocity

Acoustic bulletin, Vol. 9 ¹ 1, (2006) p.15-20
Functional dependencies of the effective velocity of a longitudinal wave, propagating in a fibrous composite, on the component properties and porosity have been established; that was made on the basis of different mechanical models of forming the properties of the porous medium. The results of modeling are compared with experimental data. The conclusions are made concerning the use of the elastic wave velocity for assessing the elastic and porosity characteristics of the fibrous material, the number of interparticle contacts, their quality control and forecasting the effective properties of the composite.
KEY WORDS:
fibrous composite, porosity, models of properties forming, longitudinal wave velocity
TEXT LANGUAGE: Russian