UNILAstic 2.0 - Free Version

UNILAstic is a Computer Software for characterizing the mechanical properties of materials, using acoustic vibrations.

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UNILAstic allows from the  acoustic test on a cylindrical specimen.
1) Extract the dynamic Young's modulus from the first flexural frequency.
2) Extract Young's modulus, shear's modulus and poisson's modulus from the first flexural and torsional frequency.
3) Extract the dynamic Young's modulus from the first longitudinal frequency.
4) Extract Young's modulus, shear modulus and poisson's modulus from the first and second longitudinal frequencies.
5) Extract a nonlinear damping curve that relates response amplitude and damping rate for each resonant frequency. To construct the non-linear damping curve, the random decrement method and the curve fitting method are used.
6) The damping rate is calculated using the frequency curve fitting method, which fits a single-degree-of-freedom system close to a resonance frequency.

7) Estimation of compressive strength of concrete.

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