Engineering Board Exam Reviewer · Engineering Materials · hard
A tensile specimen with an original diameter of 12.8 mm has a diameter of 8.0 mm at the fracture neck. What is its percent reduction in area?
- 37.5%
- 60.9%
- 39.1%
- 156.0%
Answer
B. 60.9%
Solution
%RA = (A0 - Af)/A0 × 100 = (12.82 - 82)/12.82 × 100 = 60.9%.
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