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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