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Ductile fracture occurs due to _______ stress.

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Ductile fracture occurs due to _______ stress.

(a) Direct

(b) Shear

(c) Compressive

(d) Bending

I had been asked this question in a national level competition.

My question comes from Fracture Toughness, Protection against Fracture in section Imperfection in Metal Crystals, Fracture, Corrosion and Oxidation of Engineering Material & Metallurgy

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Correct choice is (b) Shear

For explanation I would say: Ductile fractures occur with large plastic deformation. This failure is caused due to the effect of shear stress. Brittle fracture, on the other hand, is caused due to direct stress.

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