Which outcome occurs when rapid heating induces spallation?

💡 Explanation

Rapid heating during spallation generates stress waves within a material; acoustic impedance mismatch causes wave reflection, leading to tensile stress that exceeds the material strength because fracture occurs, therefore spallation results from internal tensile failure, rather than thermal conduction or damping.

• Which consequence results when rapid cooling creates point defects?
• Which behavior results when thermally exciting electrons across the band gap?
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