Material characterization of ligaments using non-contact strain measurement and digitization

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Bose, D.; Sanghavi, P.; Kerrigan, J. R.; Madeley, N. J.; Bhalla, K. S.; Crandall, J. R.

Material characterization of ligaments using non-contact strain measurement and digitization

Proceedings of the 30th International Workshop on Human Subjects for Biomechanical Research

Abstract

Area and strain measurement pose special problems in experiments designed to characterize the constitutive response of ligamentous tissue. Contact area measurements tools yield inaccurate results because the specimen is easily deformed. In this study, a 3D non-contact optical digitizer that relies on the principle of structured lighting is used to develop geometric models of all the ligaments of the knee joint, from which accurate calculations of cross-sectional area can be made. Similarly, it is important that the strain measurement technique used does not disturb the strain state of the specimen. Furthermore, full-field strain measurements are necessary because ligamentous tissue is inhomogeneous and local strain measurements can be misleading. Thus, this study demonstrates the application of a full-field 3D non-contact strain measurement system that relies on principles of photogrammetry and pattern recognition to compute the surface strain distribution on the Medial Collateral Ligament (MCL) of the human knee joint.
Links

URL: http://www-nrd.nhtsa.dot.gov/pdf/bio/proceedings/2002_30/30-14.pdf

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2017	Kunitomi S, Yamamoto Y, Kato R, Antona‐Makoshi J, Konosu A, Dokko Y, Yasuki T. The development of the lower extremity of a human FE model and the influence of anatomical detailed modelling in vehicle‐to‐pedestrian impacts. In: Proceedings of the 2017 International IRCOBI Conference on the Biomechanics of Injury. September 13-15, 2017; Antwerp, Belgium.469-493.
2005	van Dommelen JAW, Ivarsson BJ, Jolandan MM, Millington SA, Raut M, Kerrigan JR, Crandall JR, Diduch DR. Characterization of the rate-dependent mechanical properties and failure of human knee ligaments. In: Proceedings of the SAE World Congress & Exhibition. April 11-14, 2005; Detroit, MI. Warrendale, PA: Society of Automotive Engineers. SAE 2005-01-0293.
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