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04-BS-11: December 2019

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

  1. Question 1 Miller Indices from a Unit-Cell Sketch; FCC Rhodium Lattice Constant and Density
  2. Question 2 Tensile Test — Yield Strength, Tensile Strength, Modulus, %RA, %EL
  3. Question 3 Mass Loss on Heating a Sand–Sodium-Metasilicate Brick; Brick Manufacturing
  4. Question 4 Primary Bonding in Solids; Materials Selection for an Aircraft Wing
  5. Question 5 TTT Diagram Reading for 1035 Steel; Maximum Crack Size in a Pressure Vessel
  6. Question 6 Polyacrylonitrile Molecular Weight Averages; Stress-Relaxation Life of a Fastener
  7. Question 7 Corrosion — True/False Analysis, Galvanized Steel, and Weld Decay in Stainless Steel

Start with Question 1 →

National Exam 04-BS-11, Properties of Materials — December 2019. 3 hours, closed-book examination (approved Casio or Sharp calculator only). Notes on the paper state that any five questions constitute a complete paper and only the first five questions appearing in the answer book are marked, with 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, X-ray diffraction and density; mechanical properties/tensile testing; ceramics and ceramic processing; atomic bonding; phase transformations, TTT diagrams and heat treatment; fracture mechanics; polymer molecular weight; viscoelasticity/stress relaxation; corrosion).