Selection of Engineering Materials (Worked solution)
For one engineering component/system from the following list; write a report based on the requirement below.
- High Pressure Turbine Blade (gas turbine engine)
The case study is divided into five sections. Sections one and two form the basis of the initial report. Sections three-five form the basis of the final report
You are required to answer all sections and structure your report following the section breakdown given. If you do not answer a section (or sub-section), you cannot get any marks for it.
Do not combine sections or sub-sections
Initial Report
Section 1
- Provide a review of how your component(s) functions as part of a system (5 marks)
- Describe the in-service conditions and loading modes that your components(s) operate under and therefore justify the material characteristics needed for your selected component(s). (10 marks)
Section 2
- Perform a material selection for your component(s) using CES software, so justifying the conventional material(s) used in your selected component(s). Use relevant material performance indices and CES selection charts. (10 marks)
- Review any surface considerations relevant to your component(s) (e.g. corrosion, wear,) and indicate how such issues are addressed for your component by appropriate surface treatment. (5 marks)
Initial report: presentation, structure, technical writing style and referencing: 10 marks
Main Report
Section 3
- Provide a brief summary review of initial report as introduction to main report, justifying which material was selected previously (3 marks)
- Describe how the current (conventional material) material selected (in section 2a of initial report) & component geometry influences the choice of manufacturing routes that are feasible (4 marks)
- Justify and review the current manufacturing route (7 marks).
- Relate how your selected manufacturing route imparts microstructural changes to the material and indicate how this may affect material properties (6 marks).
Section 4
- Discuss any alternate material(s) that could be used for your chosen component. Select an advanced material based on a combination of CES software justification and reasoned discussion/argument. Focus on advanced materials such as composites (polymer, metal or ceramic matrix), ceramics and high performance alloys as is relevant to the component(s) in question. (10 marks)
- Survey advantages and limitations of your selected advanced material for the component(s) concerned (5 marks)
Section 5
Justify a manufacturing route that could be considered for the component(s) in the advanced material(s) proposed in section 4. (10 marks). Note: You should describe how your particular component is to be manufactured in the advanced material, not just how the material itself is derived in bulk form.
Main report: presentation, structure, technical writing style and referencing: 15 marks
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