Lab 3: Aluminum and CFRP Tensile Test Flashcards
Lightweight aluminum alloys and glass or carbon fiber reinforced polymer composites (GFRP
or CFRP) are widely used in
Aerospace structures
GFRP and CFRP positives…
excellent weight specific
mechanical performance, good corrosion resistance, affordability, and fabrication
Perhaps the most fundamental and commonly used
method for determining mechanical behavior of a material under load is
Tensile testing
a test specimen is gradually deformed with increasing load until
It fractures
From the data, it is possible to determine
Young’s modulus, yield
strength (if it yields), ultimate strength, ductility
Multiphase materials that combine differing constituent phases to produce a superior
material
with a better combination of properties are known as composites
Some examples of composite structures are
Concrete sidewalks, straw
reinforced clay bricks, and fiberglass fishing rods
When loaded along the fiber
direction, such a composite has axial
stress given by a rule of mixtures relation
In structural materials, careful surface preparations
involving grinding, sanding, polishing (to produce a flat mirror-like surface)
If the microscopic subjects have intriguing
volumetric surface features, a complementary method involving
stereozoom microscopy can
be used.
An objective of the lab is to learn to operate…
and use an extensometer for measuring linear strain.
A lab objective is to compare the tensile…
behavior of aluminum alloy, GFRP, and CFRP tensile specimens.
A lab objective is to observe the different weight specific…
mechanical behavior between metals and
composites.
We will not be making any… (computer related)
Software changes, if so just restart the program
We will not be… (related to the machinery control)
Pulsate the jog button
