7th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2011)

Florence, Italy
August 25-27, 2011

Measurement of the Elasticity Modulus of Artificial and Real Vocal Folds using Pipette Aspiration

S. Weiss, Alexander Sutor, J. Ilg, R. Lerch

Chair of Sensor Technology, University of Erlangen, Erlangen, Germany

Pipette aspiration technique is applied to take locally resolved measurements of artificial and real vocal folds. The measured data of one-layer and multi-layer samples as well as a pig vocal fold are compared to a finite element simulation in order to estimate the mechanical properties of the investigated samples. For the simulation, we used the results obtained by a previous study. In that study, the mechanical properties of simple one-layer silicone samples have been determined from measurements with a so-called vibration transmission analyzer. With the aid of a mathematical Inverse Method, the numerical results were adjusted to the measured data and thus equations for the material parameters were calculated. These relations serve as the material input parameters for the simulation in our study. Our measurement results are in good agreement with the simulation. Hence, this study verifies the application of an inverse scheme. Moreover, it presents a method for material characterization of multi-layer vocal fold models as well as real tissue that could assist in analyzing voice disorders.

Index Terms. Elasticity modulus, pipette aspiration, Inverse Method, vocal fold

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Weiss, S. / Sutor, Alexander / Ilg, J. / Lerch, R. (2011): "Measurement of the elasticity modulus of artificial and real vocal folds using pipette aspiration", In MAVEBA-2011, 45-48.