Evaluation on left atrial function in patients with left ventricular diastolic dysfunction by strain rate image
The test results show that for a certain type of soil its stress-strain behaviour mainly depends upon strain rate and temperature.
Influence of steel fiber volume fraction and strain rate on spalling behavior of ultra-high performance cementitious composites
According to the simulation results, we studied the effect of the process parameters, including the deformation temperature, initial strain rate and stroke, on the load, equivalent st...
Results: Although strain and strain rate declined from basal segment to apex, there was no statistical difference.
Raising the testing strain rate, the strength and yield ratio increased the plasticity slightly decreased, but the strain rate hardening index kept constant.
The results show that the effects of strain rate, anisotropy of soil strength and strain softening on T-bar factor are appreciably large.
Analysis of the results indicates that by the constitutive equation the strain rate de-pendence and thermo-softening effect of TNT are described.
The experimental items of the tests are tension of constant strain rate, creep at constant stress, and strain controlled low cycle fatigue of constant strain rate.
It was indicated that the strain rate is distributed unevenly and changes with loading time.
The steady state creep strain rate is a power function of deviatoric stress and exponential function of temperature and energy.
A pulse shaping technique has been used in split Hopkinson bar (SHPB) experiment, for ensuring the specimen in dynamic stress equilibrium and loaded under constant strain rate during the test.
Evaluation of synchronism of left ventricular in patients with hypertrophic cardiomyopathy by strain rate imaging
Because it is hard to obtain dynamic stress equilibrium and constant strain rate in soft materials specimen during the conventional SHPB experiments, a pulse shaping technique is developed.
The creep strain rate sensitivity can be determined from the relationship between the creep hardness and creep strain rate by the definition of "work of indentation".
The general yield load, stress and strain rate ahead of notches of I specimens with larger plastic constraint is larger than that of V specimens with small plastic constraint.
On the other hand, in the case of high strain rate, both overshoot and undershoot do not appear.
Two-dimensional strain and strain rate evaluating right ventricular function in children with left-to-right shunting congenital heart disease associated pulmonary artery hypertension
The results showed that on the yielding plateau, the internal friction did not change with the strain, but increased linearly with the increase of strain rate and varied inversely with frequency.
Conclusion: There was no statistical difference of strain and strain rate between the different segments and the different walls.
Strain and strain rate evaluate dystolic function of left ventricular for patients with different geometric patterns of hypertension
國文精選館
