MEGR 3161 – Engineering Materials – Final Exam Review Notes + Worked Examples

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MEGR 3161 – Engineering Materials – Final Exam Review Notes + Worked Examples

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These MEGR 3161 – Engineering Materials Final Exam Review Notes provide a complete, exam‑focused summary of all major topics covered throughout the 2025–2026 study year. Designed specifically for UNC Charlotte mechanical engineering students, this pack consolidates Exam 1–3 material into one streamlined, easy‑to‑study document. It includes detailed explanations and fully worked examples for electron configurations, crystal structures, Miller indices, theoretical density, diffusion, vacancy formation, fracture mechanics, elasticity, and mechanical property calculations. Each section is organized for fast review, with step‑by‑step solutions that mirror real MEGR exam problems. This is an ideal resource for mastering the final exam, reinforcing lecture concepts, and improving problem‑solving accuracy across the entire course.

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MEGR 3161

Engineering Materials –
Final Exam Review
Notes
Crystal Structures • Miller Indices • Diffusion •
Vacancies • Fracture Mechanics
• Elasticity

( 2025–2026 Study Year )

, Table of Contents
MEGR 3161 Engineering Materials – Final Exam Review Notes
(2025–2026 Study Year)
__________________________________________________________

[ 1 ] Exam 1–3 Combined Review

● Electron conﬁgurations
● Valence electron conﬁgurations
● Ion electron conﬁgurations
● Ionic character formula & worked examples
● Electron conﬁguration

[ 2 ] Crystal Structures & Miller Indices

● Direction indices (worked examples)
● Plane indices (Miller indices)
● Sketching directions and planes
● FCC, BCC, HCP relationships
● Miller indices

[ 3 ] Theoretical Density Calculations

● FCC, BCC density formulas
● Unit cell volume
● Avogadro’s number usage
● Full worked density example
● Density

[ 4 ] Diffusion & Vacancies (Chapter 4)

● Vacancy concentration formula
● Activation energy for vacancy formation
● Diffusion coefﬁcient (D) calculation
● Carburizing time using error function (erf)
● Interpolation steps
● Diffusion

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Uploaded on: August 6, 2026
Number of pages: 14
Written in: 2025/2026
Type: Class notes
Professor(s): Dr. ahmed el‑ghannam
Contains: Megr 3161 - engineering materials

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