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3.1 Examine ferrous and non-ferrous alloys and their uses

Engineering Materials and their Properties

1500 words

3.1 Examine ferrous and non-ferrous alloys and their uses

This section of the report should include:

  • A discussion of some of the advantageous properties that ferrous alloys possess.
  • A discussion of how changing the carbon content in steel affects its properties and provide example engineering applications for types of steel in your discussion.
  • Give the distinctive features and limitations of aluminium, magnesium and their alloys, discuss applications for these materials.   

3.2 Examine ceramic materials and their uses

This section of the report should include:

  • Discuss the structure of silicate ceramics and why silicate ceramics have great performance at extremely high temperatures.
  • Ceramics can be used in the aerospace industry due to their properties. Discuss the advantages and limitations of ceramic materials in this industry.

3.3 Examine polymers and their uses

This section of the report should include:

  • A discussion of the key differences in thermoplastics and thermosetting plastics.
  • Polymers can contain structures such as linear, branched, crosslinked and network. Explain the differences in these structures and give example materials that have this structure.
  • The average molecular weight for the polymer polyethylene is 400,000 g/mol. Find the degree of polymerisation for this value. A repeating unit of polyethylene is given below.
  • A discussion of some of the properties and uses of polyethylene and some of the environmental considerations regarding this material

3.4 Examine Composite materials and their uses

This section of the report should include:

  • An explanation of the key features and difference between particle reinforced composites and fibre reinforced composites.
  • Give an example of a fibre reinforced composite and some of the properties and applications this material has.
  • Explain what is meant by a sandwich structure composite and give an example of such a material and discuss some applications this material may have. 3.1 Examine ferrous and non-ferrous alloys and their uses

3.5 Evaluate the use of photonic materials in advanced applications

All tasks within this section should be combined into a single report that is appropriately structured and referenced throughout. The final length of the report should be at least 1000 words.

This section of the report should include:

  • Fibre optic cables are currently being used in communications. Provide a brief discussion of how they transmit light and some of the principles behind this transmission of data.
  • Provide a discussion of the structure of a fibre optic cable and suggest a suitable material for each component, justifying your answer 3.1 Examine ferrous and non-ferrous alloys and their uses
Engineering Materials and their Properties

3.6 Evaluate the existing material choice for a given engineering application

Consider the following scenario:

  • A bracket is to be designed so that it carries electrical cables through the interior of an aircraft. The bracket needs to be designed so that it has a strength of at least 100MPa. It is also a requirement that they be as light as possible.
  • A suggested material is an aluminium alloy, using the Ashby plot below with the suggested guideline evaluate this choice of material and recommend another material choice, justifying your answer.

3.7 For a given engineering application,  critically analyse and give justified recommendations for alternative material choices.

All tasks within this section should be combined into a single report that is appropriately structured and referenced throughout. The final length of the report should be at least 1000 words. 3.1 Examine ferrous and non-ferrous alloys and their uses

A pull up bar as a piece of  gym equipment is to be designed. The equipment will be used for completing exercises that will put the frame under heavy load.

The problem may be simplified and modelled below:

The bar must be solid and cylindrical. It is required to be made of a material with a minimum Young’s modulus of 50GPa.

You may assume the deflection of the bar can be calculated from:

Where the moment of inertia I is:  

δ=(FL〖^3〗)/48EI    Where the moment of inertia I is:   I=(πR〖^4〗)/4

The bar must be made from a material that minimises mass. You may consider the radius of the bar as the free variable.

A lead alloy has been initially suggested as the material for the frame. You must recommend two more suitable materials for the construction of this frame and fully justify your answer whilst considering cost and any environmental factors.

A suitable material chart has been provided to help with your task. You must show any working out you have done to come to your conclusions and include a material chart showing how you selected the materials.

Engineering Materials and their Properties


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