MMET 383 Exam 2 Questions and
Answers | Latest Update | 2024/2025 |
Rated A+
What is the primary purpose of thermal analysis in materials science?
The primary purpose of thermal analysis is to study the physical and chemical properties of
materials as they change with temperature.
How d...
MMET 383 Exam 2 Questions and
Answers | Latest Update | 2024/2025 |
Rated A+
What is the primary purpose of thermal analysis in materials science?
✔✔The primary purpose of thermal analysis is to study the physical and chemical properties of
materials as they change with temperature.
How does a TGA (Thermogravimetric Analysis) technique work?
✔✔TGA measures the amount of weight change of a sample as it is heated or cooled, providing
insights into its thermal stability and composition.
What is the significance of the glass transition temperature (Tg) in polymers?
✔✔The glass transition temperature (Tg) indicates the temperature range where a polymer
transitions from a brittle, glassy state to a more flexible, rubbery state.
What role does differential scanning calorimetry (DSC) play in material characterization?
✔✔DSC measures the heat flow associated with phase transitions in materials, which helps in
understanding melting points, crystallization behavior, and thermal stability.
1
, What is the difference between elastic and plastic deformation in materials?
✔✔Elastic deformation is reversible and occurs when stress is applied within a material's elastic
limit, while plastic deformation is permanent and occurs beyond that limit.
How do environmental factors affect material degradation?
✔✔Environmental factors such as temperature, humidity, and exposure to chemicals can
accelerate material degradation by influencing chemical reactions and physical changes.
What are some common methods for surface treatment of metals?
✔✔Common surface treatment methods include anodizing, galvanizing, and coating, which
enhance corrosion resistance and improve wear properties.
How is fatigue failure characterized in materials?
✔✔Fatigue failure is characterized by the progressive and localized structural damage that
occurs when a material is subjected to cyclic loading over time.
What is the importance of understanding creep in materials?
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