Structures and Properties of Materials MCE132 Measuring Devices Quiz

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14 Questions

What is the main aim of using measuring devices in the context of this text?

To determine the load-deformation relationship

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

Testing Machines

What is the primary function of a dial gauge in the context of this text?

To measure the deflection or deformation of different elements

How is a dial gauge typically attached in the context described in the text?

Attached at two points between which the relative movement is measured

What is the function of most dial gauges as described in the text?

To have two scales for measurement

What type of device is used to measure the load with the required accuracy in this context?

Load Cells

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

Measuring the small movements or deformations of test specimens

What is the primary purpose of a strain gauge in laboratory testing devices?

Measuring the small deformations within a certain gauge length

What does the output voltage from an LVDT depend on?

The value of the movement (i.e. deformation)

What is the relationship between the electric resistance of a strain gauge and the deformation occurred in the test specimen?

$\epsilon$

Which laboratory testing device is known for its high accuracy and precision?

Strain Gauge

What are the components of an LVDT (Linear Variable Differential Transducer)?

Non-magnetic shell and two primary electric coils

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

Measuring the axial deformations of axially loaded elements

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

$\epsilon$ increases linearly

Test your knowledge about laboratory testing devices for measuring material mechanical properties, including testing machines, dial gauges, LVDT, strain gauges, and proving rings. Learn about the aim of using measuring devices and their importance in determining load-deformation relationships.

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