Highlights
Q1 An Aluminium alloy is manufactured using wire-arc additive manufacturing.
a) The alloy is anticipated to have an ultimate tensile strength of ~300 MPa. There are two load cells available 10 kN and 50 kN. A 50 mm maximum gauge length extensometer is available (40%).
1. Research what is wire-arc additive manufacturing and explain it
2. Sketch up a FLAT two sample dimensions suitable for the testing with each load cell.
3. What is the appropriate speed of testing according to ASTM B557M (you can access the standard online through library).
4. Detail the test procedure according to standard.
5. Discuss the number of testing requirements, machining requirements and what would make a test unacceptable.
b) Design an experimental plan to measure the impact toughness of the material (15%).
1. Explain the test method
2. Sketch the sample design
3. Define the instrument requirements
c) Define a hardness measuring method for evaluating the materials hardness (10%).
1. Outline the test method.
2. Explain any measuring notes and considerations
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