Vibrational analysis of tendons' mechanical properties

Gian Marco Revel; Alessandro Scalise; Lorenzo Scalise

doi:10.1117/12.468157

22 May 2002 Vibrational analysis of tendons' mechanical properties

Gian Marco Revel, Alessandro Scalise, Lorenzo Scalise

Proceedings Volume 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2002) https://doi.org/10.1117/12.468157
Event: Fifth International Conference on Vibration Measurements by Laser Techniques, 2002, Ancona, Italy

Abstract

Authors present a new non-intrusive experimental procedure based on laser techniques for the measurement of mechanical proprieties of tendons. In previous works authors described a new methodology based on the measurement of the first resonance frequency of the tendon by laser vibrometry during in-vitro tensile experiments, with the final aim of establishing a measurement procedure to perform the mechanical characterization of tendons by extracting parameters, as the resonance frequency, achievable also during in-vivo investigation. In this work the experimental procedure has been updated with a measurement technique for the non-invasive determination of tendon cross-sectional area during tensile vibration tests at different load levels. Test procedure is based on a tensile machine, which measure tendons longitudinal elongation generated by a known load. Sample cross-section area is measured and stress-strain curve can be obtained. The cross-section area is measured with a new non-contact procedure based on optical displacement sensor, in such a way as to determine its perimeter. From the perimeter, the area can be easily extracted by integration. At each load level, resonance frequency, damping, area and tensile force are measured, allowing thus a complete mechanical characterization of the tendon. Stress —strain relations have been correlated to the first resonance frequency of the tendon measured using a single-point laser Doppler vibrometer.

Citation Download Citation

Gian Marco Revel, Alessandro Scalise, and Lorenzo Scalise "Vibrational analysis of tendons' mechanical properties", Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); https://doi.org/10.1117/12.468157

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