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Question 34

Stress ruptures are characterized by _________ failures and are usually accompanied by thinning at the fracture surface.

    Correct Answer: B

    Stress ruptures in materials, particularly in tubular structures, are often described as 'fish-mouth' failures. This term refers to the appearance of the rupture, which looks like an open mouth of a fish due to the thinning and deformation of the material at the fracture site. The distinctive feature of a thinning, knife-edged fracture surface is indicative of the significant deformation and bulging that occurs before the material ultimately fails.

Discussion
ahmadmmOption: B

Tube ruptures are characterized by open “fishmouth” failure and are usually accompanied by a thin, knife edged fracture surface resulting from the excessive deformation and bulging prior to failure.