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    Discussion :: Machine Design - Section 5 (Q.No.44)

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    44.

    In cyclic loading, stress concentration is more serious in

    [A]. brittle materials

    [B]. ductile materials

    [C]. brittle as well as ductile materials

    [D]. elastic materials

    Answer: Option B Explanation:

    No answer description available for this question.

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    Indra Bhushan Rai said: (Oct 13, 2014)

    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: (Nov 11, 2014)

    I agree with Indra, it should be brittle material.

    Amal said: (Jan 8, 2016)

    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.

    Saurabh Chaurasia said: (Apr 22, 2016)

    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: (Jun 18, 2016)

    For static loading-brittle.

    For cyclic loading-ductile.

    Abreeque said: (Nov 1, 2016)

    If the static load is more serious for brittle material. Why we use machine base material brittle? Just like lath machine bed.

    Rajib said: (Nov 4, 2016)

    Yes, I agree with you @Gaurav.

    Neeraj said: (Feb 15, 2017)

    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.

    Anuj said: (Dec 27, 2017)

    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.

    Veerendar said: (Jan 20, 2018)

    Yes, answer should be C.

    Srinivas K said: (Sep 15, 2018)

    For Static loading, its more serious for Brittle Materials, but for Cyclic loading, Stress concentrations is serious for both Brittle & Ductile.

    Lovely Joshi said: (Oct 19, 2018)

    Yes, the answer should be option C.

    Bablu Yadav said: (Oct 22, 2018)

    The answer is C because the stress concentration factor serious for both ductile and brittle material in cyclic loading.

    Nayyef Talib said: (Apr 12, 2020)

    I agree @Anuj.

    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. Since the fatigue failure normally occurs in the range below yielding point.

    Tarik said: (Apr 28, 2020)

    Yes, C is the right answer.

    Vinay Bel said: (Sep 26, 2020)

    Agree, ductile material is right one.

    Ganeshr said: (Mar 6, 2021)

    @Amal. Good explanation.

    Santhosh said: (Jul 10, 2021)

    For static loading - brittle.

    Cyclic loading - brittle and ductile.

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    Stress concentration in cyclic loading is more serious in

    Stress concentration in cyclic loading is more serious in a) Ductile materials b) Brittle materials c) Equally serious in both cases d) Depends on other factors

    Stress concentration in cyclic loading is more serious in

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    Examveda

    Stress concentration in cyclic loading is more serious in

    A. Ductile materials

    B. Brittle materials

    C. Equally serious in both cases

    D. Depends on other factors

    Answer: Option A

    Click here to read 1000+ Related Questions on Machine Design(Mechanical Engineering)

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    Join The Discussion Comments ( 2 )

    Tarik Hassan : 3 years ago

    The answer is completely wrong. It will be either C or B

    Saidul Alam : 3 years ago

    equally serious in both ductile and brittle material cases

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    In cyclic loading stress concentration, is it more serious for ductile or brittle, and why?

    Answer: Brittle materials react more seriously to cyclic loading because of the property of Brittle materials to show no sign of fracture until thw actual fracture occurs. Whereas in ductile materials, significant changes in terms of size and shape can be observed when it is loaded. For example n...

    In cyclic loading stress concentration, is it more serious for ductile or brittle, and why?

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    Brittle materials react more seriously to cyclic loading because of the property of Brittle materials to show no sign of fracture until thw actual fracture occurs. Whereas in ductile materials, significant changes in terms of size and shape can be observed when it is loaded. For example necking can be seen only in ductile materials.

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