A 600 strain gage rosette is mounted on the surface of a cylindrical pressure vessel with element a aligned with the long axis of the cylinder. After an internal gage pressure p is applied, strains are measured to be a = 114.3 microstrain, b and c = 428.6 microstrain . For the tank material, E = 30 x 106 psi and  = 0.32. a) Find the state of strain (x, x and xy) and the principal strains. b) Using your knowledge of thin-walled pressure vessels, estimate the internal pressure, p.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.