Bone exhibits rate-dependent failure behavior, suggesting that viscoelasticity is a factor in the damage and fracture of bone. Microdamage initiates at scales below the macroscopic porosity in bone, and, as such, is affected by the intrinsic viscoelasticity of the bone tissue. The viscoelasticity of the bone tissue can be measured by nanoindentation and recording the creep behavior at constant ...

Collagen is considered to be the principal contributor of postyield properties. Any modification of bone collagen including accumulation of non-enzymatic cross-links should, therefore, be expected to modify the fracture behavior of bone. Previous studies under monotonic loading to fracture have shown that non-enzymatic glycation (NEG) of bone reduces its post-yield properties [1,2], but no info...

The mechanical behavior of the adhesive interface between the fiber-reinforced polymer (FRP) strip and the concrete substrate often controls the response of FRP-strengthened reinforced concrete (RC) members. Plenty of studies devoted to understanding the mechanical behavior of FRP strips glued to concrete are currently available in the scientific literature. However, they are mainly focused on ...

Numerical simulations were carried out to characterize the behaviors of fractured reservoirs under production which causes in-situ boiling. A radial flow model with a single production well, and a two-dimensional geothermal reservoir model with several production and injection wells were used to study the two-phase reservoir behavior. The behavior can be characterized mainly by the parameters s...

We find that the classical failure criteria, i.e., maximum normal stress criterion, Tresca criterion, Mohr-Coulomb criterion, and von Mises criterion, cannot satisfactorily explain the tensile fracture behavior of the bulk metallic glass (BMG) materials. For a better description, we propose an ellipse criterion as a new failure criterion to unify the four classical criteria above and apply it t...

Aims Bone fracture risk analysis is a mandatory issue for the prevention of traumatic events and the reduction of medical efforts. The standard analysis for the evaluation of bone fracture risk is the analysis of Bone Mineral Density (BMD) [1, 2]. However, using only BMD to predict bone fracture risk was demonstrated to be not reliable [3]. This is probably due to the role of morphology in bone...