Paper format. National Examinations, December 2019 — 16-Mec-B8 Engineering Materials. Three hours, open book; any non-communicating calculator is permitted. Seven problems, all of equal value; any five of them constitute a complete paper, so each problem carries 20 marks. Candidates are urged to submit a clear statement of any assumptions made. All seven problems are solved below, because the complete set is the study resource. Problems 2, 5 and 6 are to be answered against the figures reproduced on page 4 of the examination paper — the Callister cold-work curves, the eutectoid isothermal-transformation diagram and the aluminium-rich Al–Cu phase diagram.
Reference texts (22-Mec-B8 Engineering Materials).
- Askeland & Wright, The Science and Engineering of Materials, 7th ed. — the primary syllabus text.
- Callister & Rethwisch, Materials Science and Engineering: An Introduction, 10th ed. — the source of the three figures attached to this paper.
- Shackelford, Introduction to Materials Science for Engineers, 8th ed.
- Dieter, Mechanical Metallurgy, 3rd ed. — true stress–strain and the flow curve.
- Kalpakjian & Schmid, Manufacturing Engineering and Technology — drawing schedules, cold work and process annealing.
- Fontana, Corrosion Engineering, 3rd ed. — the galvanic series in sea water.
- Ashby, Materials Selection in Mechanical Design, 5th ed. — selection by property profile and material index.
Figure values (the copper cold-work curves for Problem 2, the eutectoid isothermal-transformation curves for Problem 5 and the Al–Cu phase boundaries for Problem 6) are read from the printed figures. Graph readings carry the usual chart-reading tolerance of roughly one part in twenty, which is stated wherever it changes an answer.
