MATSE 259 Exam 1 Review Questions with Detailed Verified Answers

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MATSE 259 Exam 1 Review Questions
with Detailed Verified Answers
Question: Engineering stress and strain use the ______ geometry, while true
stress and strain use the ___ geometry.


Answer: Engineering uses initial and true uses current


Question:
If the length of a tensile sample is extended by 50% under tension, is it more
appropriate to use engineering strain or true strain?


Answer: True


Question:
stress strain curve


Answer:


Question:
What percent of deformation requires the use of true stress and strain


Answer: >10%


Question:
Which part is plastic and elastic region on a stress strain curve


Answer:

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Question:
What is poisson effect


Answer: if strain trans is not equal to zero, generally strain trans < 0


Question:
What do atoms in plasticity do


Answer: plasticity is all about atoms sliding past eachother


Question:
When do you use Hollomon's Equation


Answer: for large deformation, plastic deformation, and slow loading


Question:
What is toughness


Answer: energy absorbed per unit volume at failure


Question:
Which stress strain curve is higher, brittle or ductile materials


Answer: brittle


Question:
covalent bonds