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Results and Discussion
Evidence of a Bound
3 other sections not shown
adhesive annulus approximately base bone cement calculated cancellous bone cancellous bone-PMMA interface coefficient of friction compressive stress Configuration II specimen crack length crack tip damage model decrease deflection deformation determined energy release rate EpMMA experimental load-deflection curve experimental specimen experimental stiffness failure model FEM analysis FEM model finite element fracture energy friction plateau global stiffness i i i i I i i i i idealized curve initial interface crack interface debonding interface elements interface failure interface fracture interface shear stiffness interface stiffness interphase layer kN/mm lbs/in LEFM linear elastic LVDT LVDT's material properties measured mechanisms mesh mold normal stiffness normal stress number of nodes PMMA polymer process zone prosthesis prosthesis failure push-through-pin experiments Raab radiographs shear and normal shear strength shown in Figure SIFs singularity softening specimen stiffness stress intensity factors tensile tensile stress Ti-PMMA interface Type B specimen UHMWPE Young's modulus zero