Resonant frequency, shear wave velocity, shear modulus, shear strain, and damping ratio by two independent routes: half power bandwidth and free vibration decay.

Having damping from two methods on the same specimen is useful because they disagree in a revealing way when the specimen or the fit is poor.

In torsional shear mode the secant shear modulus comes from the stress-strain response and damping from the hysteresis loops. Excitation covers 1 to 300 Hz in resonant column mode and 0 to 50 Hz in cyclic torsional mode.