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Fracture toughness (K_IC) is resistance to crack propagation: higher means harder to break even with flaws.

Guida passo passo

  1. 1Input material properties and defect size
  2. 2Calculate stress intensity factor
  3. 3Determine fracture criterion

Esempi risolti

Ingresso
Steel K_IC ≈ 100 MPa√m (tough)
Risultato
vs. Ceramic K_IC ≈ 5 MPa√m (brittle)

Errori comuni da evitare

  • Confusing toughness with strength
  • Not accounting for stress concentration

Domande frequenti

Why do ceramics have low toughness?

No crack blunting mechanism; brittle failure from small flaws.

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