Material property characterization and pulse propagation in thin drawn wire waveguides

The material properties of thin drawn wire waveguides (304 stainless steel and hard tempered aluminium 1100 with diameters ranging from 127 to 406 μm) are characterized experimentally, and axially symmetric elastic wave pulse propagation is modeled analytically. The drawn wires are found to behave as transversely isotropic media. Dispersion measurements are used to accurately determine two of the five independent material properties in several metal wire samples: better than 0.5% for E_LL (longitudinal Young´s modules), and better than 5% for V_LT (longitudinal-transverse Poisson´s ratio). The value of G_LT (longitudinal-transverse shear modulus) is determined through measurement of the first torsional mode. The dispersive pulsed waveforms may be accurately predicted from the model