Assume that the composite described in Problem 16.8 has a Assume that the composite described in Problem 16.8 has a cross-sectional area of 320 mm2 (0.50 in.2) and is subjected to a longitudinal load of 44,500 N (10,000lbf). (a) Calculate the fiberâmatrix load ratio. (b) Calculate the actual loads carried by both fiber and matrix […]
A thick steel sheet of area 400 cm2 is exposed A thick steel sheet of area 400 cm2 is exposed to air near the ocean. After a one-year period it was found to experience a weight loss of 375 g due to corrosion. To what rate of corrosion, in both mpy and mm/yr, does this […]
A structural member 100 mm (4 in.) long must be A structural member 100 mm (4 in.) long must be able to support a load of 50,000 N (11,250 lbf) without experiencing any plastic deformation. Given the following data for brass, steel, aluminum, and titanium, rank them from least to greatest weight in accordance with […]
At approximately what temperature would a specimen of g-iron hav At approximately what temperature would a specimen of g-iron have to be carburized for 2 h to produce the same diffusion result as at 900(C for 15 h?
A steel bar 100 mm (4.0 in.) long and having A steel bar 100 mm (4.0 in.) long and having a square cross section 20 mm (0.8 in.) on an edge is pulled in tension with a load of 89,000 N (20,000 lbf), and experiences an elongation of 0.10 mm (4.0 ( 10-3 in.). Assuming […]
Calculate the moduli of resilience for the materials having the Calculate the moduli of resilience for the materials having the stressâstrain behaviors shown in Figures 6.12 and6.21.
A steel alloy specimen having a rectangular cross section A steel alloy specimen having a rectangular cross section of dimensions 12.7 mm A? 6.4 mm (0.5 in. A? 0.25 in.) has the stressâstrain behavior shown in figure. If this specimen is subjected to a tensile force of 38,000 N (8540lbf) then (a) Determine the elastic […]
At room temperature the electrical conductivity and the electron At room temperature the electrical conductivity and the electron mobility for copper are 6.0 X 107 (-m)-1 and 0.0030 m2/V-s, respectively. (a) Compute the number of free electrons per cubic meter for copper at room temperature. (b) What is the number of free electrons per copper […]
Argon diffuses through a high density polyethylene (HDPE) sheet Argon diffuses through a high density polyethylene (HDPE) sheet 40 mm thick at a rate of 4.0 A? 10â7 (cm3 STP)/cm2-s at 325 K. The pressures of argon at the two faces are 5000 kPa and 1500 kPa, which are maintained constant. Assuming conditions of steady […]
Assume there exists some hypothetical metal that exhibits ferrom Assume there exists some hypothetical metal that exhibits ferromagnetic behavior and that has (1) a simple cubic crystal structure (Figure), (2) an atomic radius of 0.153 nm, and (3) a saturation flux density of 0.76 tesla. Determine the number of Bohr magnetons per atom for thismaterial.