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GATE 2022 MT – Question 29

Mechanical Behaviour of Materials · Fracture mechanics · 1 mark · Multiple choice

Match crack-deformation modes: P. Mode I; Q. Mode II; R. Mode III.

Column B: X. Forward shear; Y. Parallel shear; Z. Crack opening.

  1. P − Z, Q − Y, R − X
  2. P − Z, Q − X, R − Y
  3. P − Y, Q − X, R − Z
  4. P − Y, Q − Z, R − X

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Show answer and explanation

Correct answer: (B) P − Z, Q − X, R − Y

Explanation

Mode I opens the crack normal to its faces. Mode II gives in-plane forward shear; mode III gives out-of-plane parallel or tearing shear.

Hence P-Z,Q-X,R-Y, **B**.