Method:Compression tests with electronic experimental instrument(Model CSS-2205) were performed with 49 standardized test sites in 55 bony endplates of intact adult cadaveric vertebrae(L1~S1) using a 1.5mm-diameter and plane indenter with a test rate of 12mm/min,datas were analyzed statistically.
The feature of acoustic emission in response to indentation fracture behavioursunder the action of Vickers diamond indenter for hot-pressed Si_3N_4 and reaction-bondedSi_3N_4 ceramics has been investigated.
The goodness of fit was studied for Vickers hardness of plasma sprayed Cr 3C 2-NiCr coating following normal, lognormal and Weibull distributions, then the effects of indenter load, testing direction and locations on Vickers hardness were investigated.
The tests were performed in the four-point bending mode in air at the temperature of 1000℃,1200℃,1300℃ and 1400℃ respectively. The cross head speeds were chosen of 1,0.5,0.1 and 0.01 mm/min at each temperature.
Based on Large Orifice Discharge theory,the criterion by which the liquid level in sprue and distribution sprue keep connected or not has been given, and the mathematical formulas which can be used to calculate the actual discharge head and cross section area of ingate have been put forward.
The unsaturated hydraulic conductivities followed an exponential function of pressure head.
It is assumed that the drains are completely full of water; the pressure head in the soil along the line of contact with the drain is equal to the elevation of its upper point, at which there is no excess pressure.
The strict monotonicity of the relation between the flow rate and the pressure head difference in a region of the enlarged stream tube type and the possibility of an increase in flow rate with increase in flow resistance are demonstrated.
Under the action of the heat it is heated, melts, expands, becomes less viscous and under the pressure head created may flow relative to the stationary rock skeleton (first component).
The pressure distributions in the closure region of the cavity, the "flow-pressure head" characteristics, and the cavitation number (or pressure coefficient) as a function of the gas-injection rate are measured.
The method provides for a gradual decrease in applied stress as an indenter penetrates into a crystal.
Indenter-Penetration Viscometry of Glasses for Small-Sized Samples under Conditions of Continuous Heating
Conical-Indenter Penetration Viscometry on Thin Glass Plates
Rheological properties of aqueous solutions of carboxymethyl cellulose, polyvinyl alcohol, and of their blends prepared under various conditions (temperature, concentration, time) were studied by viscometry and of ball indenter penetration.
Combination of Methods of Impact Indenter and Acoustic Anisotropy for Assessing Fatigue Flaws in Metals
EGFR is over-expressed in numerous tumors including, those derived from the brain, lung, bladder, head and neck.
It is found that the head-on face (in contact with solution) of the films is green while the back face is white.
Optimal approximation of head-related transfer function's pole-zero model based on genetic algorithm
In the research on spatial hearing and virtual auditory space, it is important to effectively model the head-related transfer functions (HRTFs).
In the research on spatial hearing and realization of virtual auditory space, it is important to effectively model the head-related transfer functions (HRTFs) or head-related impulse responses (HRIRs).