Asked Nov 30, 2019

Why is the theoretical strength of materials higher than the observed strength?


Expert Answer

Step 1

The theoretical strength of material is higher than the observed strength the reason for this is that the actual material have some defects in it in the form of dislocation due to which the deformation of crystal structure occurs at a much lower stress level than it is indicated. These defects decrease the subsequent strength of the material.

Step 2

These dislocation in some respects also helps to control the mechanical properties of the material like if no dislocation were present in material like iron than it would be brittle and the material could not be...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in


Mechanical Engineering

Material Science

Related Mechanical Engineering Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: The beam shown in (Figure 1) weighs 320 lb/ft . Determine the magnitude of the internal normal force...

A: Given data:The weight of the beam per unit length, W = 320 lb/ft.


Q: 2.5 lbm of ammonia in a piston-cylinder assembly undergoes a refrigeration cycle consisting of 4 pro...

A: Given data,


Q: An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2 L. At the beg...

A: As we are bound to answer only three subparts, We’ll answer the first three subparts of the question...


Q: consider the beam shown in. EI is constant. assume that EI is in kip * ft2. specify the deflection o...

A:  Show the free body diagram of the beam as in Figure 1.


Q: What is the strain in an axis-symmetric, unconstrained, thin-walled pressure vessel?

A: The strain developed in thin pressure vessel are mainly of two types:Strain in radial direction (Hoo...


Q: please solveQ6 asap

A: Calculate the temperature at the exit point of the compressor. For this use isentropic relation.


Q: Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 299°C from ...

A: Determine the gas constant.


Q: Steam enters a nozzle operating at steady state at 20 bar, 263°C, with a velocity of 52 m/s. The exi...

A: Given data,


Q: 19.1 10 SLE oz 19.1-22. Diffusion and Heterogeneous Reaction on a Surface. In a tube of radius R m f...

A:  Rate of input (difusion) - Rate of output (diffusion)+ Rate of generation(hetrogeneous) = Rate of a...