Objectives

This week the material properties of a low-carbon steel are to be determined using tensile stress-strain data and then compared with standard values.  The experiment will make use of the automated data collection systems and strain-gage extensometers on the Instron 4469 and 4485 universal testing machines.

The objectives for this portion of the experiment are:

• to show the student the procedures for automatic data acquisition for a uniaxial tensile test.
• to familiarize the student with the mechanical properties of low-carbon steel.

Each group will also be given the opportunity to choose a second sample from the following list.  

• bar
• sheet
• strapping
• webbing
• wire

The objectives for this portion of the experiment are:

• to demonstrate the stress-strain relationship for a material which may not exhibit a well-defined yield point.
• compare the mechanical properties of this material to those of low-carbon steel.