Top 5 different types of bending test fixtures and where to buy them?
Bending test fixtures are used to convert the axial or rotary motions of the ELF and Instron fatigue testers into various forms of bending motions or motions that combine bending and other operations. For this purpose, Measurements Technology, Inc. has developed several bending test fixtures, all of which are based on the principal function of the test. These fixtures are designed to store a statistically meaningful number of specimens and are often changed to meet the customer's device design's test needs. All of these test settings can be employed with PBS baths or fluid flow to create physiologically realistic environmental conditions. The types of bending tests done are described in the following list of bending test fixtures:
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The pure bending test fixtures:
A bending moment is applied to the
device's proximal and distal ends, resulting in a pure bending configuration at
the device's center in pure bending test fixtures.
Bending test fixtures with a
cantilever:
The proximal end of the specimen is
fixed while the distal end is displaced orthogonally in cantilevered bend test
fixtures. As a result, the component of the gadget closest to the fixed end
bends.
The Combined cantilevered/pure
bending test fixture:
In the combined cantilevered/pure
bending test fixture, the proximal end of the specimen is fixed while the
distal end is moved along an arc with a fixed radius. This test is known as the
"wag" test because it resembles the wagging of a tail. The specimen
can be wrapped around a mandrel with a known radius or it can
"discover" its own radius of curvature.
Bending test fixtures with a
constant radius:
Bending fixtures with a constant
radius are intended to apply a bending moment at a specified radius. This form
of testing is referred to as "bending on a mandrel." With this
procedure, the proximal end of the specimen is stationary while the distal end
is moved in an arc. To ensure that the bend has a constant radius, the specimen
is bent over a predetermined radius mandrel. This test can be used to generate
both positive and compressive stresses that are predictable.
The shear-induced bending test
fixtures:
Shear-induced bending test fixtures bend and shear the device by applying a shear motion to one or both ends of the specimen. The specimen is normally allowed to determine its own radius of curvature based on the applied motions.
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