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A cooling curve is shown in Figure 9-22. Determine
(a) the pouring temperature;
(b) the solidification temperature;
(c) the superheat;
(d) the cooling rate, just before solidification begins;
(e) the total solidification time;
(f ) the local solidification time;
(g) the undercooling; and
(h) the probable identity of the metal.
(i) If the cooling curve was obtained at the center of the casting sketched in the figure, determine the mold constant, assuming that n = 2.
Figure 9-22
Design a square individual column footing (reinforced concrete) to support a 16-in.-square reinforced concrete tied interior column. Service loads are 200 kips dead load and 160 kips live load.
Rubber bands are used in physical therapy to provide resistance to motion. For a band that is 0.07 inches thick and 2.5 inches wide, with E = 120 psi and ν = 0.47. (a) If a force of 4 lbs is applied to an 18 inch long strip, what is the change in ..
water is contained in a closed rigid tank of volume 0.3 m3 at an initial pressure of 4 bar and a quality of 66. heat
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steam enters a turbine at 40 bars 440c and 100 ms through an pipe with a cross-sectional area of 0.050 m2. at the exit
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An isotropic pressure-dependent yield criterion for polymers, of the form f = A(σ 1 + σ 2 + σ 3) + B[(σ 2 - σ 3)2 + (σ 3 - σ 1)2 + (σ 1 - σ 2)2]1/2 = 1, has been proposed.
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