Explain the concept of creep and its implications on the design of high-temperature structures.
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Explain the concept of creep and its implications on the design of high-temperature structures.
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Solved in 4 steps
- Explain the behavior of a ductile material when it is subjected to uniaxial tension test. Explain also how to determine its material properties based on the resulting engineering stress-strain diagram of the material from the said test.How do you calculate whether a material with a 0.5 sq cm cross section is suitable to withstand temperatures of 2000F and tensile forces of 10kN if the material has a creep strength of 500MPa at 1400F? Show the calculations.Describe the term “creep” and the effect of temperature and stress on creep.
- Explain the concept of yield strength and its importance in material testing.What is the critical assumption made regarding the area of the particle-to-particle contacts in deriving effective stress?Comment on the following items: a. Why is the material “viscoelastic”? What is meant by this term? b. If more than one material is tested, how did the creep deformation of the different beams differ? Which ones demonstrated the most and least strains? c. Understanding the relationship between instantaneous and delayed elastic response, how does the strain behave at prolonged periods? What do you think would happen after the load is removed?