EQS 307 Questions And Answers 2024
FATIGUE: Which of the following would you most likely expect from the fatigue experiment, based on
your knowledge of its error sources? - ANS-Shorter times to failure, compared to theory
FATIGUE: Instead of A228 steel, one group used a different metal with a l...
EQS 307 Questions And Answers 2024
FATIGUE: Which of the following would you most likely expect from the fatigue experiment, based on
your knowledge of its error sources? - ANS-✔✔Shorter times to failure, compared to theory
FATIGUE: Instead of A228 steel, one group used a different metal with a lower Young's modulus but the
same S-N curve. How will this affect their results? - ANS-✔✔Longer times to failure
FATIGUE: Would a similar fatigue experiment provide any useful insights into the performance of steel
cables holding up a suspension bridge? - ANS-✔✔Yes
FATIGUE: Which of the following is the most likely explanation for fatigue specimens failing at the jaws,
as opposed to the middle of the arc? - ANS-✔✔Misalignment in the jaws
FATIGUE: You discovered that the 2 inch radius of curvature specimen repeatedly fails at closer to 10
seconds, rather than the theoretical 40 seconds. Which of the following is NOT an explanation for this
behavior? - ANS-✔✔The radius of the music wire was smaller than expected
FATIGUE: After conducting 5 tests at the 2 inch radius of curvature, you decide to conduct another 5
tests at the same radius of curvature, but with the motor spinning in the opposite direction. Your results
differ between the two experiments. Which of the following do NOT explain these differences? - ANS-✔
✔The strain is dependent on the direction of rotation
FATIGUE: By fatigue testing alone the Young's modulus can be determined, but will be inaccurate. - ANS-
✔✔False
FATIGUE: One of the reasons we are unable to find the endurance limit for steel is because our
experiment exerts a mean compressive force, causing the specimen to not have an endurance limit. -
ANS-✔✔False
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