An aluminum alloy with a yield strength of 350 MPa and a tensile strength of450MPaexhibits a Basquin's Law of σarNf0.1=750MPa. If the alloy is subjected to zero-to-tension fatigue loading, with σmax= 250 MPa, in how many cycles will the alloy fail?(2.3 x 106cycles)After 1.0 x 106cycles at this loading, it is decided that the lifetime needs to be extended by an additional 4.0 x 106cycles in "zero-to-tension" loading. What is the new maximum stress that can be appliedin zero-to-tension loading?(115MPa)

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?