Structures and Properties of Materials MCE132 Measuring Devices

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What is the main target of using measuring devices in materials testing?

To analyze the chemical composition of the material

To determine the load-deformation relationship (correct)

To measure the electrical resistance of the material

To calculate the material's weight

Which device is used to apply the load on the test specimen and measure this load with the required accuracy?

Dial Gauges

Testing Machines (correct)

Strain Gauges

LVDT

What is the main function of a dial gauge in materials testing?

To apply load on the test specimen

To measure the deflection or deformation of different elements (correct)

To measure the electrical resistance of the material

To calculate the material's weight

What type of testing machines can be used for applying tension and compression loads?

Universal testing machine Signup and view all the answers

What is the purpose of proving rings in materials testing?

Measuring deformation or deflection of different elements Signup and view all the answers

Which device is attached at two points between which the relative movement is measured?

Dial Gauges Signup and view all the answers

What is the function of an extensometer in laboratory testing?

To measure the axial deformations of the axially loaded elements Signup and view all the answers

What does LVDT stand for?

Linear Variable Differential Transducer Signup and view all the answers

What is the structure of the LVDT device?

Contains one primary and two secondary electric coils, with a magnetic core Signup and view all the answers

What property does a strain gauge measure?

Electrical resistance changes proportionally Signup and view all the answers

How is the deformation of a test specimen transferred to the strain gauge?

Through foil or wire bonded to a thin base of plastic or paper Signup and view all the answers

What is the function of increasing the length of the strain gauge and reducing its cross-sectional area?

To increase the electric resistance of the gauge linearly proportional to the deformation occurred in the test specimen Signup and view all the answers

What is an advantage of using a mechanical dial gauge over an electrical strain gauge?

Can be used several times and for a long period Signup and view all the answers

Which laboratory testing device is used to measure small deformations within a certain gauge length?

Strain gauge Signup and view all the answers

What property does an LVDT measure?

The small movements or deformations of the test specimens Signup and view all the answers

What does an electrical strain gauge consist of?

Foil or wire bonded to a thin base of plastic or paper, with one primary and two secondary electric coils Signup and view all the answers

What is the main target of using measuring devices in materials testing?

To determine the load-deformation relationship and calculate the material mechanical properties Signup and view all the answers

Which laboratory testing device is used to measure small deformations within a certain gauge length?

Strain Gauges Signup and view all the answers

What property does a strain gauge measure?

Deformation Signup and view all the answers

Which device is used to apply the load on the test specimen and measure this load with the required accuracy?

Testing Machines Signup and view all the answers

What does LVDT stand for?

Linear Voltage Deformation Transducer Signup and view all the answers

What type of testing machines can be used for applying tension and compression loads?

Universal Testing Machines Signup and view all the answers

What is the purpose of an LVDT (Linear Variable Differential Transducer) in laboratory testing?

To measure the small movements or deformations of test specimens Signup and view all the answers

What is the function of a strain gauge in materials testing?

To measure the small deformations within a certain gauge length Signup and view all the answers

How does an LVDT work to measure deformations?

By providing an output voltage that depends on the value of the movement Signup and view all the answers

What happens to the electrical resistance of a strain gauge as it is strained?

It changes proportionally to the deformation Signup and view all the answers

In which laboratory testing device can an increase in the length of the gauge and a reduction in its cross-sectional area lead to an increase in electric resistance?

Strain gauge Signup and view all the answers

What is the primary function of an extensometer in laboratory testing?

To measure the axial deformations of axially loaded elements Signup and view all the answers

What does a mechanical dial gauge offer as an advantage over an electrical strain gauge?

Can be used several times and for a long period Signup and view all the answers

What property does an LVDT measure?

The small movements or deformations of test specimens Signup and view all the answers

What property does a strain gauge measure?

The electrical resistance changes proportionally with deformation Signup and view all the answers

What is the function of increasing the length of the strain gauge and reducing its cross-sectional area?

It increases electric resistance Signup and view all the answers

Structures and Properties of Materials MCE132 Measuring Devices

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Questions and Answers

What is the main target of using measuring devices in materials testing?

Which device is used to apply the load on the test specimen and measure this load with the required accuracy?

What is the main function of a dial gauge in materials testing?

What type of testing machines can be used for applying tension and compression loads?

What is the purpose of proving rings in materials testing?

Which device is attached at two points between which the relative movement is measured?

What is the function of an extensometer in laboratory testing?

What does LVDT stand for?

What is the structure of the LVDT device?

What property does a strain gauge measure?

How is the deformation of a test specimen transferred to the strain gauge?

What is the function of increasing the length of the strain gauge and reducing its cross-sectional area?

What is an advantage of using a mechanical dial gauge over an electrical strain gauge?

Which laboratory testing device is used to measure small deformations within a certain gauge length?

What property does an LVDT measure?

What does an electrical strain gauge consist of?

What is the main target of using measuring devices in materials testing?

Which laboratory testing device is used to measure small deformations within a certain gauge length?

What property does a strain gauge measure?

Which device is used to apply the load on the test specimen and measure this load with the required accuracy?

What does LVDT stand for?

What type of testing machines can be used for applying tension and compression loads?

What is the purpose of an LVDT (Linear Variable Differential Transducer) in laboratory testing?

What is the function of a strain gauge in materials testing?

How does an LVDT work to measure deformations?

What happens to the electrical resistance of a strain gauge as it is strained?

In which laboratory testing device can an increase in the length of the gauge and a reduction in its cross-sectional area lead to an increase in electric resistance?

What is the primary function of an extensometer in laboratory testing?

What does a mechanical dial gauge offer as an advantage over an electrical strain gauge?

What property does an LVDT measure?

What property does a strain gauge measure?

What is the function of increasing the length of the strain gauge and reducing its cross-sectional area?

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