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Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter12: Electric Current And Related Variables In Engineering

Section12.2: Electrical Circuits And Components

Problem 6BYG

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Question

Below two stress strain curves are drawn to scale. Explain the advantage/disadvantage of material A vs. B.

Expert Solution

Step 1

Material A –

The following are the features of the stress-strain curve of material A:

The stress strain curve of material A highlights a greater value of elastic limit, which signifies that the stress is proportional to the strain for a longer loading.
The strain-hardening zone, which is the zone at which the strain goes on increasing without any increase in the stress, is negligible in case of material A.
The ultimate-load value is significantly high, with greater breaking-load value as well.

Step 2

Material B –

The following are the features of the stress-strain curve of material B:

The stress strain curve of material B highlights a significantly low elastic limit, which signifies that the stress is proportional to the strain for much lesser loading.
The strain-hardening zone, which is the zone at which the strain goes on increasing without any increase in the stress, is very high in case of Material B.
The ultimate-load value is significantly low, with lower breaking-load value as well.

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