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National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Development of testing equipment for measuring mechanical properties of cancellous bone
 Jiroušek, Ondřej ; Jírová, Jitka ; Vavřík, Daniel
Development of experimental procedures used for evaluation of mechanical properties of cancellous bone using small samples of cylindrical shape. Both the compressive and tensile specimens are tested while for the strain measurement an optical method utilizing CCD camera of high resolution is used. The procedure is used to assess the relationship between the apparent density of the cancellous bone in Hounsfield units obtained from computer tomography scans and viscoelastic material properties used in finite element modeling of whole bones.
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Parametric study of acetabular cup migration
 Jírová, Jitka ; Micka, Michal ; Jíra, Josef ; Sosna, A. ; Pokorný, D.
Loosening and migration of acetabular cup into the pelvis belongs to the most serious therapeutical complications. Using computational model we have analyzed stress concentrations at the contact of artificial cup and bone tissue.
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Experimental determination of stress-strain dependence of non-standard materials
 Vavřík, Daniel ; Drdácký, Miloš
The subject of this work is experimental determination of mechanical properties for different types of animal hairs. Mortars reinforced by thin fibres have promising properties for application in cultural heritage protection. Theoretical research is based on mathematical modeling of composite materials with inorganic (brittle) matrix and differential types of reinforcement fibres - natural as well as man made polymeric fibres. For these models, knowledge of mechanical properties of the fibres is needed. Optical method developed especially from this purpose will be introduced in this paper.
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Stress analysis of human pelvic bone after THR cup implantation
 Jiroušek, Ondřej ; Jíra, J. ; Jírová, Jitka ; Kult, Jaroslav
Study of the possible mechanical reasons for the acetabularcup migration which is one of the main causes for total hipreplacement (THR) instability and leads to an early re-operation.
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