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1) What is the name of the behavior where a material specimen thins out when the material deforms under tension, or, vice versa, the material thickens when deformed under compression. Include the full name of the scientist after which this effect was named.
2) Explain the difference between the stiffness (k) and the modulus of elasticity (E), also known as Young's modulus.
3) When Dr. Armanios rolled the sheet of honeycomb material, the material did not roll into a cylindrical shape but instead bent into a saddle shape . Explain why this happens from basic properties and characteristics of solid materials.
12. 3 kg of refrigerant 22 undergoes a process for which the pressure-specific volume relation is pv^-0.8 = constant. The initial state of the refrigerant is 12 bar and 60 degrees C. The final pressure is 8 bar. Kinetic and potential energy effects a..
a 4m long quarter-circular gate of radius 3 m and of negligible weight is hinged aboutnbspits upper edge a. the gate
refrigerant 134a enters the capillary tube of a refrigerator as a saturated liquid at 0.8 mpa and is throttled to a
A turbojet aircraft flies with a velocity of 900 km/h at an altitude where the air temperature and pressure are -35 degrees C and 40 kPa. Air leaves the diffuser at 50kPa with a velocity of 15 m/s, and combustion gases enter the turbine at 450 kPa an..
A piston cylinder contains 0.1 kg air at 300 K and 100 kPa. The air is now slowly compressed in an isothermal (constant temperature) process to a final pressure of 250 kPa. Air is assumed as ideal gas; the gas constant of air is R = 0.287 kJ/kg-K .
Aluminum plates are fastened together with brass rivets. The aluminum plates have a total exposed area of 1.5 ft.2 and the rivets have a total exposed area of 2.5 in.2. The environment involves moisture and some salt.
The joints are butt welded with an efficiency of 75%. The allowable tensile stress for the steel plate is 125 MPa. Calculate the required thickness of the walls.
Determine the required mole fractions of the nitrogen and carbon dioxide to produce this mixture. From Chapter 17, the speed of sound is given by
Figure P8-1 shows the cam and follower from Problem 6-65. Using graphical methods, find the pressure angle at the position shown.
In a certain application, a pump is required to deliver 5000 gpm against a 300-ft head when operating at 1200 rpm. What type of pump would you recommend?
How does this expression simplify for the case where a deflection function w(x,y) is chosen such that, for a rectangular plate, w ¼ 0 along all the edges?
if the 50 kg. crate starts from rest and attains a speed of 6ms when it has traveled a distance of 15m. determine the
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