Given the magnitude of an applied tensile stress, and the length and tip radius of a small crack which axis is perpendicular to the direction of the applied stress, compute the maximum stress that may exist at the crack tip. ⦁   Cite the conditions that must be met for a brittle material to experience fracture. ⦁   Briefly state why sharp corners should be avoided in designing structures that are subjected to stresses. ⦁   For some material, given values of the modulus of elasticity and specific surface energy, and the length of an internal crack compute the critical stress for propagation of this crack.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Given the magnitude of an applied tensile stress, and the length and tip radius of a small crack which axis is perpendicular to the direction of the applied stress, compute the maximum stress that may exist at the crack tip.
⦁   Cite the conditions that must be met for a brittle material to experience fracture.
⦁   Briefly state why sharp corners should be avoided in designing structures that are subjected to stresses.
⦁   For some material, given values of the modulus of elasticity and specific surface energy, and the length of an internal crack compute the critical stress for propagation of this crack.

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