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Deformation that occurs due to stress over a period of time is known as ____________

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Deformation that occurs due to stress over a period of time is known as ____________

(a) Wear resistance

(b) Fatigue

(c) Creep

(d) Fracture

This question was posed to me in a national level competition.

This intriguing question comes from Mechanical Properties topic in division Properties of Engineering Materials of Engineering Material & Metallurgy

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The correct option is (c) Creep

Easiest explanation: Creep is the time-dependent deformation of the material under stress. Wear resistance, fatigue, and fracture deal with deformation under stress without a time factor, i.e. they are time-independent.

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