Straightforward estimation of the elastic constants of an isotropic cube excited by a single percussion.
Ritz's method is applied to calculate accurate values of the lowest non-dimensional natural frequencies of a freely vibrating isotropic cube. The dependence of such frequencies and their quotients on Poisson's ratio is established. Vibration of a cube caused by percussion is detected at a point by a laser interferometer. With the help of the tables and graphs provided and with the values of the first lowest frequencies obtained experimentally in a single test, Poisson's ratio and the shear modulus are calculated by means of elementary arithmetical operations.
Nieves
F J
FJ
Gascón
F
F
Bayón
A
A
Salazar
F
F
D000162:Acoustics; D004548:Elasticity; D005583:Fourier Analysis; D007368:Interferometry / Q000379:methods*; D008962:Models, Theoretical; D016012:Poisson Distribution; D013193:Stainless Steel; D014732:Vibration
D013193:Stainless Steel