The characterisation of fibrous materials from measurements of absorption using techniques based on the Voronina model

摘要

In this work we present a method for characterising fibrous materials from absorption measurements in the Kundt tube. One may calculate the structural characteristics, the complex propagation constant and the specific impedance of material using techniques based on the Voronina Model. Furthermore, this method allows one to estimate the diameter of a fibre for its use in other models, and does not require any special equipment.