Questions
Quick questions
You should be able to answer these questions without too much difficulty after studying this TLP. If not, then you should go through it again!
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Which of the following materials has the highest Coefficient of Thermal Expansion (CTE)?
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In the experiment to determine Young's Modulus, hanging a weight on the cantilever beam leads to a measurement of vertical displacement, d. This value is related to the applied load and the Young's Modulus by the following equation:
\[\delta = \frac{1}{3}\frac{{P{L^3}}}{{EI}}\]
What does I represent in the equation?
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Which of the following materials has the higher value of Young's Modulus?
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What do αA and αB represent with respect to materials A and B in the following equation which calculates the misfit strain?
Δε = (αA - αB)ΔT
Deeper questions
The following questions require some thought and reaching the answer may require you to think beyond the contents of this TLP.
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Explain in terms of atomic structure and bonding why polymers tend to have lower stiffnesses and higher expansivities than metals and ceramics.
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From the data given in the properties table suggest a suitable pair of metals for the construction of a bimetallic strip. What other factors do you think might in practice be relevant for making such a choice?