Investigating the Young's Modulus of certain materials

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SUMMARY

This discussion focuses on the investigation of Young's Modulus (E) of materials, specifically how temperature affects its value. It is established that increasing temperature slightly lowers E, while reducing temperature into the cryogenic range increases E, although the change is minimal. The conversation emphasizes that yield and tensile strength are more significantly influenced by temperature than E itself. A reference graph from MIL-HDBK-5 illustrates the measurable changes in modulus versus temperature for steel.

PREREQUISITES
  • Understanding of Young's Modulus and its significance in material science
  • Familiarity with temperature effects on material properties
  • Knowledge of tensile and yield strength concepts
  • Ability to interpret graphs and data from engineering handbooks like MIL-HDBK-5
NEXT STEPS
  • Research the relationship between temperature and Young's Modulus in various materials
  • Explore the effects of cryogenic temperatures on material properties
  • Study the methodology for measuring Young's Modulus using standard equipment
  • Investigate other factors influencing yield and tensile strength in materials
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Material scientists, mechanical engineers, and students studying material properties who are interested in the effects of temperature on Young's Modulus and related mechanical properties.

calum
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I am investigating the Young's Modulus of certain materials and what factors have an effect on the Young's Modulus of materials.

I am going to be altering the temperature, my hypothesis being that increasing the temperature will lower the E of the materials.

Are there other factors I could investigate that would have an effect?
 
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Hi calum,
Yes, increasing temperature will lower E slightly. Conversely, reducing temperature well into the cryogenic range increases E. But it isn't a huge amount. Yield and tensile strength for example, are much more heavily influenced by temperature.

To answer your question, I don't think there's any other factors that affects E other than temperature.
 
Q_Goest said:
Hi calum,
Yes, increasing temperature will lower E slightly. Conversely, reducing temperature well into the cryogenic range increases E. But it isn't a huge amount. Yield and tensile strength for example, are much more heavily influenced by temperature.

To answer your question, I don't think there's any other factors that affects E other than temperature.

Ok thanks for your help. You say E is lowered slightly, do you think it would be possible to observe a measurable change in E using quite standard equiptment?
 
Attached is a graph of modulus versus temperature for steel, taken from MIL-HDBK-5. As you can see, the modulus changes, and it should be measurable.
 

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Q_Goest said:
Attached is a graph of modulus versus temperature for steel, taken from MIL-HDBK-5. As you can see, the modulus changes, and it should be measurable.

That's great thanks, really helpful thanks for your help :)
 

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