Question

A tension test has been carried out on a weld test specimen. Before the tension test, the diameter was 0.505 in. At yield point, the diameter was 0.375 in. What is the percent difference?

a) 12.8%
b) 25.7%
c) 34.6%
d) 53.4%
e) 74.1%

Answer 1

The percent difference in diameter from the tension test is calculated using the given original and reduced diameters, which results in a difference of 25.7%.

Step-by-step explanation:

To calculate the percent difference in diameter from a tension test, we use the formula: Percent Difference = ((Original Diameter - Reduced Diameter) / Original Diameter) × 100%. In this case, the original diameter is 0.505 in and the reduced diameter at the yield point is 0.375 in.

First, subtract the reduced diameter from the original diameter: 0.505 in - 0.375 in = 0.130 in. Next, divide the difference by the original diameter: 0.130 in / 0.505 in = 0.25742574. Finally, multiply by 100% to get the percent difference: 0.25742574 × 100% = 25.742574%.

Therefore, the correct answer is b) 25.7%.