The GATE Grind

GATE Mechanical Behaviour of Materials: Fracture mechanics – Previous Year Questions

7 GATE previous year questions on Fracture mechanics (Mechanical Behaviour of Materials, Metallurgical Engineering) with answers and explanations, from every paper.

  1. GATE 2021 MT Q59 (2 marks, Numerical answer) – An infinite metal plate has a central through-thickness crack of full length 80/ mm. Its maximum mode-I applied stress is MPa (nearest integer).…
  2. GATE 2022 MT Q29 (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.
  3. GATE 2023 MT Q26 (1 mark, Multiple select) – When cracks propagate in a brittle material, the following option(s) is/are correct
  4. GATE 2024 MT Q45 (2 marks, Multiple choice) – Which graph represents Griffith’s criterion for growth of a center crack in an infinitely large, brittle isotropic plate? SE is the magnitude of total…
  5. GATE 2024 MT Q63 (2 marks, Numerical answer) – A large rectangular component under fully reversed cyclic loading develops a dominant surface fatigue crack. Stress amplitude is A=100 MPa, material…
  6. GATE 2025 MT Q58 (2 marks, Numerical answer) – A component made from alloy A, with plane-strain fracture toughness K IC=50\ MPa\,m1/2, fractures at crack length 0.4 mm under tensile service stress…
  7. GATE 2026 MT Q51 (2 marks, Numerical answer) – For plane-strain fracture-toughness testing of maraging steel, the minimum thickness to achieve valid K Ic is mm. (Answer in integer.) Given K Ic=90\…