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Consider the elevated temperature crack growth characteristics of ceramics in which glassy films at grain boundaries undergo viscous deformation at high temperature. Provide a physical reason for the argument in Section 11.7.3 that, for fixed values of the maximum stress intensity factor and cyclic frequency, an increase in fatigue crack growth rates occurs in the following sequence of waveforms: triangular -> sinusoidal -> trapezoidal or squar
What pressure gradient along a streamline, dp/ds, is required to accelerate water upwards in a pipe at 0.5 m/s^2 ? The incline is 1:10, i.e., 1 m upward for every 10 m horizontal.
Calculate the pressure inside a 2-mm diameter bubble of water at 20°C and compare with the pressure inside a 2-mm diameter droplet of water at 20°C.
A screw thread is cold rolled on a 1015 low-carbon steel bolt of 6.25 mm diameter. Observation shows that the length of the contact zone between die and screw blank is L = 1.25 mm. The average strain hardening during rolling corresponds to a strai..
Provide a reasonable design for a 99.4% efficient ESP treating 30,000 m^3/min of gas. The dust has a resistivity of 7.1 (10)^10 ohm-cm. Specify the total plate area, channel width, number and size of plates
Soil has been compacted in an earth dam to a bulk density of 2.2 Mg/m3 and a water content of 9.5%. The value of Gs is 2.6. Would it be possible to compact the above soil at a water content of 13.5% to a dry density of 2.00 Mg/m3
determine (a) the pressure, (b) the quality, and (c) the enthalpy. Also, show the process on a T-v diagram with respect to saturation lines.
Consider a tensile test on polycrystalline copper which has a yield strength of 20,000 PSI and a tensile strength of 40,000PSI. The engineering strain at maximum load in a tensile test was 25%.
What is the maximum pressure on the form in PSF?
Beam AC has been cut at D, and the left section free-body diagram is shown. Calculate the internal resultant normal force N, shear force V , and bending moment at D, M. Use the sign convention for internal resultant loading in a beam.
You are the winner of a sweepstakes and given a choice of a one-time payment of $1,000,000 or a guaranteed $80,000 per year for 20 years. Assume that you will collect all 20 years regardless of health condition.
determine the magnitude Fs of the tensile spring force in order that the resultant of Fs and F is a vertical force . Determine the magnitude R of this vertical resultant force.
A completely reversible heat engine uses a solar receiver for a hightemperature reservoir and a lake for a low temperature reservoir. The sun maintains the receiver surface at 290 ° F while the lake remains at 40 °F.
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