Mechanical Engineering - Machine Design - Discussion
Discussion Forum : Machine Design - Section 5 (Q.No. 44)
44.
In cyclic loading, stress concentration is more serious in
Discussion:
18 comments Page 1 of 2.
Indra bhushan rai said:
1 decade ago
Stress concentration is more serious in brittle material because stress concentration in brittle material results in immediate failure while ductile materials neutralize effect of stress concentration to some extent by deforming plastically.
Gaurav said:
1 decade ago
I agree with Indra, it should be brittle material.
AMAL said:
10 years ago
No stress concentration is more serious in brittle material when there is static loading because of sudden plastic deformation and not able to withstand that load so, crack develops in brittle material.
But in cyclic loading its is dependent on yielding. As brittle materials do not yield it is more serious in ductile materials.
But in cyclic loading its is dependent on yielding. As brittle materials do not yield it is more serious in ductile materials.
Saurabh Chaurasia said:
9 years ago
In Brittle materials stress concentration is more serious as a failure of material is sudden without any warning whether in the ductile material it happens in stage with cup and cone formation.
Gaurav said:
9 years ago
For static loading-brittle.
For cyclic loading-ductile.
For cyclic loading-ductile.
Abreeque said:
9 years ago
If the static load is more serious for brittle material. Why we use machine base material brittle? Just like lath machine bed.
Rajib said:
9 years ago
Yes, I agree with you @Gaurav.
Neeraj said:
9 years ago
Good explanation @Amal.
@Abreeque.
Gray cast iron is used for machine tool bed due to high damping capacity agree with you, it is brittle material and also stress concentration more due to static loading to decrease it's brittleness and stress we do high tampering process.
@Abreeque.
Gray cast iron is used for machine tool bed due to high damping capacity agree with you, it is brittle material and also stress concentration more due to static loading to decrease it's brittleness and stress we do high tampering process.
Anuj said:
8 years ago
The answer should be option C.
Stress concentration is more serious in the brittle material when the load is static but when it is dynamic load it is serious to both ductile as well as brittle.
Stress concentration is more serious in the brittle material when the load is static but when it is dynamic load it is serious to both ductile as well as brittle.
Veerendar said:
8 years ago
Yes, answer should be C.
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