Abstract
The complex extensional modulus of rabbit skin was measured by recording acoustic pulses propagating along thin strips of skin excised from the backs of rabbits. In the experiment, a step change in displacement was introduced into the skin sample by a speaker, to which one end of the sample was attached. The response was recorded at different locations along the sample by a phonograph pickup. The nominal static stress on the samples during the experiments was maintained at a low level (1500 Pa). Repeatable results for the attenuation, speed, and viscoelastic storage and loss moduli were measured in the frequency range of 200–1000 Hz. In this frequency range, the attenuation was approximately linearly proportional to the frequency and the speed was approximately constant. The storage and loss moduli were also approximately constant in this frequency range, with mean values of 179 300 Pa and 113 700 Pa, respectively. [Work supported by NIH.]
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