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Those that harden under strain, such as the aluminum-magnesium alloys used in beverage cans and the copper-zinc alloy, brass, used for cartridges, which show more strain hardening than pure copper or aluminum, respectively.
When a material is deformed under a substantial amount of strain, strain hardening is seen as a strengthening process. Lamellar crystals and chain molecule orientation on a vast scale are the culprits. When plastic materials are stretched past their yield point, this phenomena is frequently seen. When a metal is stretched past its yield point, strain hardening occurs. The metal appears to get stronger and harder to deform as more stress is needed to cause additional plastic deformation. Strain hardening is directly related to fatigue.
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Answer:
the minimum expected elastic modulus is 372.27 Gpa
Explanation:
First we put down the data in the given question;
Volume fraction 
= 0.84
Volume fraction of matrix material 
= 1 - 0.84 = 0.16
Elastic module of particle 
= 682 GPa
Elastic module of matrix material 
= 110 GPa
Now, the minimum expected elastic modulus will be;
= ( × ) / ( + )
so we substitute in our values
= (682 × 110 ) / ( [ 682 × 0.16 ] + [ 110 × 0.84] )
= ( 75,020 ) / ( 109.12 + 92.4 )
= 75,020 / 201.52
= 372.27 Gpa
Therefore, the minimum expected elastic modulus is 372.27 Gpa
Answer:0.3166N
Explanation:
Given data
Area 
Gap below top plate
Gap above bottom plate
SAE 30 oil viscosity =
Velocity of middle plate
There will viscous force on middle plate i.e. at above surface and below surface
Viscous force
![Net Force on plate F =\mu Av\left [\frac{1}{y_1} +\frac{1}{y_2}\right ]](https://tex.z-dn.net/?f=Net%20Force%20on%20plate%20F%20%3D%5Cmu%20Av%5Cleft%20%5B%5Cfrac%7B1%7D%7By_1%7D%20%2B%5Cfrac%7B1%7D%7By_2%7D%5Cright%20%5D)
![F=0.38\times 500\times 10^{-4}\left [\frac{1}{20\times 10^{-3}} +\frac{1}{30\times 10^{-3}}\right ]](https://tex.z-dn.net/?f=F%3D0.38%5Ctimes%20500%5Ctimes%2010%5E%7B-4%7D%5Cleft%20%5B%5Cfrac%7B1%7D%7B20%5Ctimes%2010%5E%7B-3%7D%7D%20%2B%5Cfrac%7B1%7D%7B30%5Ctimes%2010%5E%7B-3%7D%7D%5Cright%20%5D)
this is force by oil on plate thus we need to apply atleast 0.3166N to move plate
