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04-BS-11: December 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 BCC Chromium — Density, Unit-Cell Sketch, Interplanar Spacing
  2. Question 2 Bridge-Cable Wire Count; Measuring Yield Strength and Poisson’s Ratio
  3. Question 3 Be–Si Eutectic System — Diagram and Solidification Paths
  4. Question 4 Stress Relaxation of a Nylon Band; Load Sharing in a Glass/Nylon Composite
  5. Question 5 Copper Half-Cell Potential; Electroplating Current and Time
  6. Question 6 Centre-Cracked Panel — Critical Crack Length and Fatigue Life
  7. Question 7 Concrete Curing; Identifying an Unknown Hardenability Lot

Start with Question 1 →

National Exam 04-BS-11, Properties of Materials — December 2016. 3 hours, closed-book examination (approved Casio or Sharp calculator only). Candidates attempt any five of the seven questions for a complete paper, all questions of equal value. All seven questions are solved below for completeness.

Reference texts: Callister & Rethwisch, Materials Science and Engineering: An Introduction, 9th ed. (crystal structure, mechanical behaviour, phase diagrams, polymer viscoelasticity, composites, electrochemistry, fatigue/fracture, heat treatment and hardenability, concrete).