A cylindrical rod of 1040 steel originally 11.4 mm (0.45 inch) in diameter is to be cold worked by drawing. Tensile strength of more than 825 Mpa (120,000 psi) and a ductility of at least 12% EL are desired. Furthermore, the final diameter must be 8.9 mm(0.35 inches). Explain how this may be accomplished. Could you achieve the same properties with a brass rod? explain

2. A 3-D printer was used to fabricate a porous cartilage scaffold using a hydrogel solution. The hydrogel (viscosity was 3 x 10 Pa-s) was added to the extruder, and a pressure of 5 bar was applied to extrude 500 mL of the solution over 10 minutes to form the desired shape. The needle attached to the extruder had a length of 50 mm and an inner diameter of 1.0 mm. Determine the pressure drop needed to complete this fabrication process.

Three fractionator overhead system configurations are illustrated below. Describe each configuration. Include the movement of components and/or streams. Discuss the advantages and disadvantages of each configuration.

21. A plate and frame filter press is used to filter a compressible sludge (S = 0.45) at 50 psia for 2 hours. Washing is done at 30 psi with wash water equal to 10% of the filtrate volume collected. The washing time is a. 100 min b. 127 min c. 85 min d. 205 min

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Question: A cylindrical rod of 1040 steel originally 11.4 mm (0.45 in.) in diameter is to be cold worked by drawing;  the circular cross section will be maintained during deformation.  A cold-worked tensile strength in excess of 825 MPa (120,000 psi) and a ductility of at least 12%EL are desired.  Furthermore, the final diameter must be 8.9 mm (0.35 in.).  Explain how this may be accomplished.

4. Polyethylene (HDPE) pipe is used as a strut in a crutch 22 mm assembly. The pipe generally prepared by extrusion followed by external cooling. The attached figure is a plot of variation of density through a PE pipe. a.) What is the % 958- 956 954 1952 bore pipe wall Outside Density (kg m 3)

Can someone help me identify possible sources of errors while experimenting shell and tube heat exchangers? Explain clearly what will be the cause of this error. Thank you so much!

For a large plate, the geometry factor, f, is 1.24. Suppose a steel casting alloy has a critical fracture toughness of 76,292 psi*in1/2. The steel will be exposed to a stress of 49,041 psi during service. Calculate the minimum size of a crack at the surface that will grow in units of inches.