Relate the mechanical behaviour of polymers, and their tendency to crystallise, to the shapes of a range of simpler polymer molecules .

Words: 639
Pages: 3
Subject: Uncategorized

1. Shear stress and torsion 2. Complex stress 3. Failure 4. Pressure vessels 5. Application of stress analysis to aircraft wing structures 6. Kinematic analysis of motion 7. Momentum, forces and impulse 8. Rotation and plane motion 9. Vibration and periodic motion 10. Resonance and chaotic motion 11. Characterising engineering environments 12. Fatigue and creep 13. Corrosion of metals 14. Resisting plasticity But the paper most likely would ask questions focusing on the last 4, so I have detailed them more: Characterising engineering environments Focus of study: Focus on engineering materials. You’ll be looking at some of the things that can go wrong when materials are used in particular mechanical, thermal, chemical or biological environments, and some of the ways that materials can be modified to reduce or prevent those problems. • identify features of a given engineering environment that affect the long-term performance of a material component • select, from a given range of failures, examples to illustrate brittle or ductile fracture, shear yielding and crazing. Fatigue and creep Focus of study: Some of the questions are numerical while some focus on recognising signs of fatigue or interpreting graphs and charts. • interpret the features of a given fracture surface that suggest failure by fatigue • link the underlying atomic level arrangement and microstructure of a material to its long term macroscopic mechanical behaviour • use data from fatigue and creep tests to determine key material parameters and predict the service life of components. Corrosion of metals Focus of study: Metal corrosion, understanding of electrochemistry and practice identifying different types of corrosion, as well as carrying out corrosion calculations. • explain how different materials and combinations of materials corrode in terms of material chemistry and microstructure • identify features of a design that affect the rate of corrosion • formulate a basic plan for corrosion protection or prevention for a given engineering system and carry out relevant calculations. Resisting plasticity Focus of study: Mechanisms for strengthening metals and metal alloys. In particular, looks at the role played by dislocations in the plastic deformation of metals and the various ways that impeding dislocation motion affect the properties of the metal. • explain how cold working, grain size reduction, solution strengthening and precipitation hardening each strengthen metals and metal alloys • outline how the particular behaviour of steels can be employed to control their properties • relate the mechanical behaviour of polymers, and their tendency to crystallise, to the shapes of a range of simpler polymer molecules • explain why ceramics are prone to brittle failure and how they can be strengthened using surface treatments. Making the most of materials (and microstructures) Focus of study: Introduces the basics of phase diagrams for alloys of two elements (binary alloys). You will become familiar with the terminology of phase diagrams and start to recognise features on the diagram that relate to certain characteristics of the materials. Extends phase diagrams to rather more complex alloy systems and you will start to see how the microstructure of an alloy can be manipulated to obtain particular properties. Case study in high modulus polyethylene fibre where you will see the theoretical limits of materials strength being approached in a commercial context, and finally a return to ceramics. • correctly label and interpret the main features of phase diagrams for the simpler binary metal alloys • briefly describe the main strengthening strategies for metal alloys • relate the structure of polymer molecules to their suitability for use in certain applications • explain in scientific terms the strengthening effect of liquid phase sintering on ceramics .

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