As the lead engineer for a LPG storage project, you are overseeing the design of pressure vessels such as those shown below. Identify which test (or tests) is most suitable to pick a material and thickness for the spherical shell of the pressure vessel. Why these are the relevant tests. Explain what information these tests provide and why it is important to determining material and thickness.

4. For the composite product shown (carbon fiber-epoxy duct flange), describe the plan to produce the final product from a complete product design (supplied by the customer's engineering department). You are responsible for all aspects of production; nothing is supplied other than the design. Explain/list all material, equipment, tooling & personnel requirements to be able to deliver a product of acceptable quality at a rate of 20 units per week. A contract has been signed for 2 years. For the sake of this part, assume there are no certifications required. Overall part size is 6.00" x 8.00" x 1.25" deep. Thickness is approx. 0.085" as produced by 8 plies of twill fabric. The surface shown is the visible side and requires a tooled surface. You choose the process.

What is the maxium stress the composite lay-up of S-glass fiberglass of .008" with 21 layers of plys can withstand.

d) A number of [0]s and [0,90]s CFRP test specimens were made from prepreg material with the following properties: Fibre strength, of = 3250 MPa Fibre modulus, E₁ = 195 GPa Matrix strength, m = 35 MPa Matrix modulus, Em = 3.8 GPa Volume fraction of fibres, Vf = 0.65 Calculate the tensile strength, oc, and the tensile modulus, Ec, in the 0° and 90° directions, using the simple "rule of mixtures" approach for both the [0]s and [0,90]s specimens.