For constrained thermal expansion thermal ε int constra ε or T α E σ Solve for

# For constrained thermal expansion thermal ε int

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For constrained thermal expansion thermal ε = int constra ε or T α = E σ . Solve for σ σ = TE α = (5.3×10 í 6 /°C)(1200°C í 25°C)(69 GPa) = 430 MPa

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Instructors Solutions Manual (PIEV) 233
Instructors Solutions Manual (PIEV) 234

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Instructors Solutions Manual (PIEV) 235 Problem 7.18 Solution (a) According to the figure in the range of heat transfer rates for a water quench, fused silica can support a temperature drop of nearly 3000° C, which is much larger than the required 600° C, so it is acceptable. (b) For porcelain, the corresponding maximum temperature drop is about 100° C, which is not high enough, so this plan should not be endorsed.
Instructors Solutions Manual (PIEV) 236

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Instructors Solutions Manual (PIEV) 237
• Fall '09

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