1. A cylindrical steel tank is manufactured based on the following data: internal pressure: 36 MPa factor of safety with respect to YP: 2.0 yield stress in tension (circumferential): 900 MPa yield stress in shear (longitudinal): 440 MPa (a) Determine the minimum wall thickness if the diameter of the cylindrical steel tank is 360 mm. (b) Determine the maximum acceptable internal pressure if the wall thickness is 1.28 cm. Use 2 decimal places in every solved values.

A tensile test was performed on a metal specimen with a diameter of 1 2 inch and a gage length (the length over which the elongation is measured) of 4 inches. The dam were plotted on a load-displacement graph. P vs. L. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P/L =1392 kips/in. What is the modulus of elasticity?

Compare the engineering and true secant elastic moduli for the natural rubber in Example Problem 6.2 at an engineering strain of 6.0. Assume that the deformation is all elastic.

How does a tensile stress differ from a compressive stress?

According to Figure 5-20, is ii possible to completely separate one of the four materials from the other three? Explain your answer.

In concrete work, Fuller and Thompson (1907) suggested that a dense packing of grains can be achieved if the percent finer (p) and grain size (D) are related by the following equation, where n is a constant varying in the range of 0.3-0.6. Dmax is the size of the largest grain within the soil. p=(DDmax)n100 This equation is sometimes used in roadwork for selecting the aggregates. a. For n = 0.5, show that the soil is well graded. b. If n = 0.5 and Dmax = 19.0 mm, find the percentages of gravel, sand, and fines within the soil. Use the Unified Soil Classification System.

For silver at a tensile stress of 7 MPa and a temperature of 839C , there are two equally contributing creep mechanisms. What are they?