Sample interview questions: How do you approach the characterization of materials under extreme mechanical or thermal stresses?
Sample answer:
-
Identify the relevant material properties:
-
Identify the mechanical and thermal properties that are important for the material’s performance under extreme conditions. These properties may include:
- Young’s modulus
- Tensile strength
- Yield strength
- Compressive strength
- Fatigue strength
- Creep resistance
- Thermal conductivity
- Thermal expansion
-
Melting point
-
Select the appropriate characterization techniques:
-
Choose characterization techniques that are sensitive to the material properties of interest and that can be used under extreme conditions. These techniques may include:
- Tensile testing
- Compression testing
- Fatigue testing
- Creep testing
- Thermal conductivity measurements
- Thermal expansion measurements
- Differential scanning calorimetry (DSC)
-
Thermogravimetric analysis (TGA)
-
Design the characterization experiments:
-
Design the characterization experiments to ensure that the material is subjected to the desired extreme conditions. This may involve:
- Using a high-temperature furnace or cryogenic chamber
- Applying high pressures Read full answer
Source: https://hireabo.com/job/5_0_15/Materials%20Scientist