Tendons have an important structural function in biological systems, their mechanical proprieties are therefore of great interest in biomechanics engineering and reconstructive medicine. Their physiological characteristics require the study of specific experimental methods able to determine the mechanical properties. In this work the authors propose a non-contact experimental method aimed to the characterization of the mechanical proprieties of rabbit patellar tendons based on the use of a single camera and a customized gripping system. The tensile test setup makes use of a fixed lens camera and a customized algorithm, providing the measurement of the local sample strain on different part along the tendon and of the cross-sectional area. The tensile stress is estimated by the value of the applied load and of the cross-section value of the sample; tensile stress values are calculated at a frequency of 8 Hz. Moreover a special design of the clamps and the use of the camera allow to protect the experimental tests from the well-known problem of peak force concentrations on the sample and slipping at its extremities, which indeed are typical problems in tensile testing of tendons.
A Camera-Based Experimental Method for Mechanical Test on Patellar TendonsMechanics of Biological Systems and Materials, Volume 7 / Scalise, Lorenzo; Barbara, Lonzi; Natascia, Bernacchia. - 63(2):(2015), pp. 7-17. (Intervento presentato al convegno 2014 Annual Conference and Exposition on Experimental and Applied Mechanics, SEM 2014 tenutosi a Greenville, SC (USA) nel 2-5 June 2014) [10.1007/978-3-319-06974-6_2].
A Camera-Based Experimental Method for Mechanical Test on Patellar TendonsMechanics of Biological Systems and Materials, Volume 7
SCALISE, Lorenzo;
2015-01-01
Abstract
Tendons have an important structural function in biological systems, their mechanical proprieties are therefore of great interest in biomechanics engineering and reconstructive medicine. Their physiological characteristics require the study of specific experimental methods able to determine the mechanical properties. In this work the authors propose a non-contact experimental method aimed to the characterization of the mechanical proprieties of rabbit patellar tendons based on the use of a single camera and a customized gripping system. The tensile test setup makes use of a fixed lens camera and a customized algorithm, providing the measurement of the local sample strain on different part along the tendon and of the cross-sectional area. The tensile stress is estimated by the value of the applied load and of the cross-section value of the sample; tensile stress values are calculated at a frequency of 8 Hz. Moreover a special design of the clamps and the use of the camera allow to protect the experimental tests from the well-known problem of peak force concentrations on the sample and slipping at its extremities, which indeed are typical problems in tensile testing of tendons.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
