Abstract
An attempt has been made to study the mechanical response of rocks to stress waves using the Complex Modulus Apparatus. Natural resonant frequencies and the half-power relative band widths are determined experimentally in the frequency range 50–5000 c/s for a few igneous, metamorphic and sedimentary rock samples. Elastic and anelastic parameters, like the real part of the elastic modulus, loss factor, complex modulus of elasticity and percentage anelasticity, are evaluated and the interrelationships between them shown. Data on four synthetic materials like perspex, ebonite and laminated sheeting are reported besides the results on different rock types.
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