Question

need help with parts A-E . plz write clearly . thanks.

Qu.l . Chapter 6: Mechanical Properties of Metals (25%) TransCanada's Keystone XL pipeline project is a proposed extension of the Keystone pipeline system that is to transport oil from Alberta, Canada to refineries in the United States (Figure 1). Keystone system (Figure 2) transports diluted bitumen and synthetic crude oil. It is 1,897 km long and will be assembled from 914 mm inner diameter and 2 meters long sections (Figure 3). outer Figure 1: Map of Keystone pipeline Figure 2 Keystone pipeline Figure 3: Pipe sections In order to design pipe section, you came up with the following information Inside pipe pressure-5.52 MPa Outside pipe pressure= 0.101 MPa Safety factor, N- 2 Deformation of the pipe is purely elastic Inner diameter of the pipe is 876 mm Your design target includes lowest cost For the execution of a successful design, please, answer the following questions (a) Determine the hoop stress in the pipe, Which materials (Table 1) are safe to use based on hoop stress? (b) If the maximum pipe elongations3mm, which material(s) İn Table 1 will you choose? (c) In addition to criterion (b), if the maximum change in the thickness of the pipe is 8.55 x 10 mm which of the material(s) you selected in part (b) will you choose? (d) Based on high-modulus-to- weight ratio which final material will you choose? (e) Confirm that you made right choice by comparing the cost of all candidate materials, using the following formula: Cost (Vpc)1000 Table 1: Typical Material Properties of Several Metals | Density, p [g.cnh | | | ơy (MPa) (GPa) Poisson's ratio, v Unit mass cost, E Material c (SUS/kg) 0.33 2.8 5.00 Aluminum 10.00 Brass 97 75 8.4 0.34 1.75 Steel 207 550 0.30 40.50 19.3 Tungsten 407 760 4.5 0.34 850 107 Titanium

Answer 1

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