GATE MT · 2020 · MT
Question 22: Fracture behaviour, Griffith theory, linear elastic fracture mechanics, fracture toughness, fractography, ductile to brittle transition.
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Question 22
MTNAT1 markNeeds review
A component subjected to tensile stress in a mechanical device is monitored periodically for cracks by NDT. The NDT technique can only detect cracks (both surface and internal) which are larger than 1 mm. Keeping a 10% margin of safety, the maximum allowed tensile stress on the component will be _____ MPa (round off to the nearest integer).
Given, fracture toughness
and assume crack geometry factor of unity.Log in to check the answer
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2020MT
GATE MT 2020 · Paper 1
Metallurgical Engineering · Original paper archive
- Section
- Metallurgical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 1 mark
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