Materials Testing Machine
Operation
8
012-13762D
Adjust the position of the load bar so that it rests on the top
surface of the front piece.
Attach the Safety Shields
Attach the Velcro® hook material on the two safety shields
to the Velcro® loop material on the front and back of the
Load Bar. Adjust the position if needed.
Materials Photoelasticity Accessory
(ME-8241)
Clear plastic samples that are viewed through crossed polar-
izers reveal patterns of different colors that show stress dis-
tribution. The Materials Photoelasticity Accessory is
designed to demonstrate the photoelastic phenomenon in
clear plastic samples.
The Accessory consists of two rectangles of polarizer mate-
rial that can be attached to the Velcro® loop material on the
Load Bar of the Materials Testing Machine.
To place the polarizers on the Load Bar, align a polarizer
with the strips of loop material on the front of the Load Bar
and press the edges of the polarizer so that the hook material
adheres to the loop material. Repeat the process with the sec-
ond polarizer on the other side of the load bar.
Place a light source so that it shines through the polarizers
from behind.
Materials Structure Beam Adapter
(ME-8242)
The PASCO Structures System includes a variety of beams
that can be used with the Materials Testing Machine. The
beams are models of I-beams and other structure elements.
The Materials Structure Beam Adapter is designed to hold a
structures beam so that it can be tested under tension and
compression.
The Materials Structures Beam Adapter consists of two
clamps and an included hex key. Each clamp has two jaws,
one of which can be removed so that an end of a structures
beam can be put in the clamp. The threaded ends of the two
clamps fit in the load bar and load cell of the Materials Test-
ing Machine.
Use the included hex key to remove the screws that hold the
two parts of the clamp together. Put the ends of a structures
beam, such as a #3 I-Beam, into one part of each clamp, and
then use the screws to reattach the other part of each clamp.
Materials Shear
Accessory
Figure: Materials Shear Accessory
Polarizer
Hook
Material
Figure: Polarizers on Load Bar
Figure: Materials Structures Beam Adapter
Clamp for
Load Bar
Clamp for
Load Cell