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Short, but aligned, Al2O3 fibers with a diameter of 20 μm are introduced into a 6,6-nylon matrix. The strength of the bond between the fibers and the matrix is estimated to be 1000 psi. Calculate the critical fiber length and compare with the case when 1-μm alumina whiskers are used instead of the coarser fibers. What is the minimum aspect ratio in each case?
Draw free body diagrams and show coordinate system. Problem 1: An archer shoots an arrow vertically upward. If the arrow ascends to a maximum height of 100 feet.
A continuous and aligned fiber-reinforced composite has a cross-sectional area of 500 mm2 and is subjected to a longitudinal load of 50,000 N. The composite is 25 vol % fiber 75 vol% polycarbonate matrix. Calculate the fiber–matrix load ratio.
Describe how additional velocity feedback, from a tachogenerator, may be incorporated into the closed-loop system, and simulate the system with MATLAB. Investigate the effect of integrating such a scheme with the proportional ampli?er approach of ..
Prepare a preliminary design for a solar PV system to provide 1 kW of stand-alone 24 h/day power to a travel trailer. Make a schematic diagram of the overall system, a cost estimate, a cell array design, and a battery storage. Then discuss the ass..
determine the velocity of ship in sea water and also the resistance in sea water if density of air 1.3 kg/m and kinematic viscosity of sea water and air as 0.012 and 0.018 stokes respectively.
A rigid sealed 50 liter tank contains Argo at a pressure of 5 MPa and 400K. What is the mass of argon inside?
air at 40oc 1 bar and a volumetric flow rate of 60 m3min enters an insulated control volume operating at steady state
saturated stream at 100 lbin2 abs is used to heat co2 in a cross flow heat exchange consisting of 4 14 in od brass
stone mix concrete slabs are used to absorb thermal energy from flowing air that is carried from a large concentrating
Consider a one-foot long 1/16" diameter steel wire pulled to a load of 350 pounds, while stretching only 0.045" . What is the calculated modulus in msi (use three significant digits)?
gaseous hydrogen at 10 bars and 27 degrees celsius is stored stored in a 100 mm diameter spherical tank having a steel
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr.
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