Engineering design, Mechanical Engineering

1) State five factors that must be considered when choosing a material. Discuss the importance to the engineer of each of these factors.

2) An engineer is planning to design a small boat: he has the choice of aluminium or steel. From the information below make an informed decision, with justifications, on which material should be used





2.65 tonnes/m3

7.86 tonnes/m3

Yield strength

275 MPa

205 MPa


310 MPa

345 MPa




You should comment on each of the above material characteristics for each material before making your choice.

3) When designing a product this must be systematic. Briefly discuss what stages need to be considered when designing a product from 'scratch'.


a) List what factors you would need to consider for a systematic approach to  the design of a new product.

b) Comment on the properties that a operational and saleable product must have e.g a new car.

Posted Date: 3/18/2013 3:47:32 AM | Location : United States

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