STRAIN Flashcards

1
Q

Amount of deformation relative to its original shape.

A

Strain

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2
Q

A segment in the stress-strain diagram where the stress-strain relationship is linear.

A

Proportional Limit

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3
Q

After being loaded, the material returns to its original shape when the load is removed. The material is ____.

A

Elastic

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4
Q

The point where the stress-strain diagram becomes almost horizontal.

A

Yield Point

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5
Q

The stress at which failure occurs.

A

Rupture/Fracture Stress

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5
Q

Beyond the ______ _____, there is an appreciable elongation, or yielding, of the material without a corresponding increase in load.

A

Yield Point

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6
Q

The highest stress on the stress-strain curve.

A

Ultimate Stress

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7
Q

A slight increase in stress above the elastic limit resulting in a breakdown of the material, causing it to deform permanently.

A

Yielding

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8
Q

It happens after yielding wherein an increase in load can be supported by the specimen, resulting in a curve that rises continuously.

A

Strain hardening

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9
Q

Happens when the deformation of material causes decrease in cross-sectional area.

A

Necking

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10
Q

Materials that can be subjected to large strains before it fractures/fails.

A

Ductile Materials

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11
Q

A typical example of a ductile material.

A

Mild Steel

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12
Q

Materials that exhibit little to no yielding before failure are referred to as _________.

A

Brittle Materials

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13
Q

Represents the largest amount of internal strain energy per unit volume the material can absorb without causing any permanent damage to the material.

A

Modulus of Resilience

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14
Q

This quantity represents the entire area under the stress-strain diagram.

A

Modulus of Toughness

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15
Q

It indicates the maximum stress the material can absorb just before it fractures.

A

Modulus of Toughness

16
Q

When a material has to support a load for a very long period of time, it may continue to deform until a sudden fracture occurs or its usefulness is impaired.

A

Creep

17
Q

Time dependent permanent deformation without the addition of load.

A

Creep

18
Q

Causes 90% of mechanical failure in construction.

A

Fatigue

19
Q

When a metal is subjected to repeated cycles of stress or strain, it causes its structure to break down, ultimately leading to fracture.

A

Fatigue

20
Q

The maximum safe axial stress used in design which should be limited to values not exceeding the proportional limit so that the stresses remain in the elastic range.

A

Working Stress