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Full-field measurements of large compressive deformations in human trabecular bone using digital volume correlation

SYSNO ASEP	0360884
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Full-field measurements of large compressive deformations in human trabecular bone using digital volume correlation
Author(s)	Jiroušek, Ondřej (UTAM-F)_{RID, SAI} Jandejsek, Ivan (UTAM-F)_{RID, SAI}
Number of authors	2
Source Title	ISB 2011, ISB2011 Conference book. - Brussels : International Society of Biomechanics, 2011 / Feipel V. - ISBN 9789090260198
Pages	s. 69-70
Number of pages	2 s.
Publication form	usb - usb
Action	ISB 2011
Event date	03.07.2011-07.07.2011
VEvent location	Brusel
Country	BE - Belgium
Event type	WRD
Language	eng - English
Country	BE - Belgium
Keywords	digital volume correlation ; trabecular bone ; large deformations
Subject RIV	FI - Traumatology, Orthopedics
R&D Projects	GAP105/10/2305 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20710524 - UTAM-F (2005-2011)
Annotation	Cylindrical sample of human trabecular bone has been incrementally compressed and its deformed microstructure captured using time-lapse microtomography. From the captured projections the deformed microstructure has been reconstructed and the displacement and deformation fields computed using a digital volume correlation (DVC) method. The approach is based on a modified Lucas-Kanade algorithm and optimized for accuracy. Displacement and strain fields are then compared to a FE model of the sample subjected to the same boundary conditions and loaded similarly with the experiment. Precision of the method is assessed using artificially deformed micro-CT images as well as data from the compression test. Results show possibility of used DVC algorithm to capture the displacements and strains in trabecular bone microstructure with high accuracy when a high-resolution X-ray detector is used.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2012

Number of the records: 1