Help on DEFORMATION: Strength Rate Calculation

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In summary, deformation in materials science is the change in shape or size of a material due to external forces, which can be elastic or plastic. Strength rate is calculated by dividing the change in stress by the change in strain and is influenced by factors such as applied force, composition, and temperature. Deformation behavior is characterized by the stress-strain curve, which is useful in determining mechanical properties. Deformation and strength rate calculation are important in fields such as mechanical engineering and material testing for designing materials with specific properties for various applications.
  • #1
SUPERSOUVIK
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Please prove that ,


macroscopic strength rate=(burger's vector)*(dislocation density)*(average dislocation density)
 
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  • #2
Why would you think this relationship holds? This would give "strength rate" the units of m-3, which seems unusual.

The increase in strength from dislocation interactions is often modeled as (shear modulus)*(Burgers vector)*(square root of disl'n density).
 
  • #3
SORRY BUT IT WAS A TYPING ERROR! ACTUALLY IT WAS average dislocation VELOCITY!
ALTHOUGH I have gave a new thread with modification!
 
  • #4
SUPERSOUVIK,

Are you talking about the strengthening rate from work-hardening of the material?
 

1. What is deformation in materials science?

Deformation in materials science refers to the change in shape or size of a material when subjected to external forces. This can be either elastic, where the material returns to its original shape after the force is removed, or plastic, where the material permanently changes shape.

2. How is strength rate calculated in deformation?

Strength rate is calculated by dividing the change in stress by the change in strain. Stress is the force applied to a material per unit area, while strain is the resulting deformation or change in shape of the material. The strength rate is typically measured in units of stress per strain, such as gigapascals (GPa) per percent (%).

3. What factors affect the strength rate of a material during deformation?

The strength rate of a material during deformation is affected by several factors, including the type and magnitude of the applied force, the composition and structure of the material, and the temperature and environment in which the deformation is occurring. The type of deformation, whether it is tensile, compressive, or shear, also plays a role in determining the strength rate.

4. How is deformation behavior characterized in materials science?

Deformation behavior in materials science is characterized by the material's stress-strain curve, which shows the relationship between stress and strain during deformation. This curve can provide valuable information about the material's strength, ductility, and other mechanical properties.

5. What are some applications of deformation and strength rate calculation in materials science?

Deformation and strength rate calculation are important in various fields of materials science, including mechanical engineering, structural design, and material testing. They are used to understand and predict the behavior of materials under different loading conditions, and to design and develop materials with specific mechanical properties for various applications, such as in construction, transportation, and manufacturing.

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