Astepped rotation shaft with diameters of 40 and 30 mm and a notch root radius at the step of 2 mm is to be subjected to a fully reversed comstant amplitude bending moment m. the desired life of the component is 90,000 cycles. the shaft is made of 2024-t351 aluminum. kt = 1.8. kf = 1.65.

using the notch strain analysis method, estimate the allowable bending moment by using a) neuber rule and b) glinka's rule (strain energy density).

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

The higher the astm grain size number, the finer the gran is. a)-true b)-false