Intravascular ultrasound may be useful for studying the natural history of atherosclerotic lesions of different morphologies and for guiding interventional strategies. This study was designed to test the hypothesis that tissue appearance by intravascular ultrasound is related to the biomechanical properties of atheroma components. Forty-three atheroma caps were obtained from the abdominal aorta...

Experimental values for the Poisson’s ratio of the nucleus pulposus (NP) are limited. Unconfined compression tests were conducted on bovine NP samples to determine apparent and true values of Poisson’s ratio. A biphasic poroviscoelastic (BPVE) finite element model was created to mimic the experimental conditions for comparison. The true Poisson’s ratio of the solid phase of NP tissue was found ...

This study focuses on evaluating the unconfined compressive strength (UCS) of improved fine-grained soils. A large database of unconfined compressive strength of clayey soil specimens stabilized with fly ash and blast furnace slag based geopolymer were collected and analyzed. Subsequently, using adaptive neuro fuzzy inference system (ANFIS), a model has been developed to assess the UCS of stabi...

Confined geometries offer useful and experimentally amenable mechanical testing arrangements in which to study the molecular micro-structural processes govern plastic yield stress environments dominated by hydrostatic pressure over shear. However, changes macroscopic strain behaviour that result from switching an unconfined mode such as uniaxial compression a confined one are often overlooked d...

Accurate modeling of the high strain-rate response of healthy human knee cartilage is critical to investigating the mechanism(s) of knee osteoarthritis and other cartilage disorders. Osteoarthritis has been suggested to originate from regional shifts in joint loading during walking and other high strain-rate physical activities. Tibial plateau cartilage under compression rates analogous to walk...

Solidifying shield muck with calcium carbide slag and fly ash as curing agents was proposed a highly efficient method for reusing waste muck. The compaction test, unconfined compression dry–wet cycle test were used to evaluate the compressive strength, water immersion stability, durability of cured soil. stress–strain curve microscopic employed analyze damage law, mineral composition, morpholog...