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2 cards from this section. Quick, good the night before a test.
Define thermal stress.
Think about what happens to materials as they heat up.
What is total stress in a pressure vessel?
Consider what two types of stresses we discussed.
What combined stresses must be considered in pressure vessel design?
Think about what can happen when a vessel is heated and pressurized.
True or False: Thermal stress can be calculated using σ_thermal = EαΔT.
Recall the variables involved in the thermal stress formula.
A pressure vessel is subjected to 300°C with an internal pressure of 10 MPa. Calculate the thermal stress if E = 200 GPa and α = 18 × 10^-6 /°C. Assume ΔT = 300°C.
Break down the problem by calculating thermal stress separately first.
Evaluate how increasing the internal temperature affects the safety of a pressure vessel designed to hold 15 MPa at 150°C. Discuss the design considerations needed for a rise to 300°C.
Think about how materials have limits and how increasing temperature affects material properties.
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