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With the use of this test
method, the mechanical properties of reinforced
and unreinforced rigid plastics may be obtained. This includes high modulus
composites, when loaded in compression at relatively low uniform rates of
strain or loading. Standard shaped test specimens are used for this test.
Compressive properties
include: yield stress, deformation beyond yield
point, modulus of elasticity, and compressive strength. Although some
materials merely flatten into a disk without producing a shattering
fracture, in these cases compressive strength has no real meaning.
Compressive test of rigid
plastics is a standard means of providing data
for research and development, acceptance or rejection according to
specifications, quality control, and special purposes. This test can only be
considered significant for engineering design purposes when the material is
being employed in applications that are essentially the same as load-time
scale of the test. Applications differing much from the test parameters
require additional test such as impact, fatigue, and creep.
To obtain complete
specifications go
to ASTM International.
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