MODULE 4 Flashcards
Machine use in tensile testing
Universal testing machine
opposite of tensile testing
Compression Testing
four parts of a compression testing machine
Main machine part
Hydraulic part
Controller part
Computer series
Linear Thermal Expansion
used to determine the rate at which a material expands as a
function of temperature
Thermomechanical Analysis
specimen is placed in the holder at room temperature
For the Thermomechanical Analyzer, the test specimen should be
between 2 and 10 mm. in length and shall not
exceed 10 mm in lateral dimension.
Bend testing, sometimes called flexure testing or transverse beam testing nm
measures the
behavior of materials subjected to simple beam loading.
3-point bend test
a single upper anvil at the midpoint,
4-point bend test.
two upper anvils equidistant from the center
stress at fracture in bending
modulus of rupture, flexural strength, or transverse rupture strength.
ASTM D790
Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
ISO 178
Plastics-Determination of Flexural Properties
ASTM A370
Tensile Testing and Bend Testing Steel Reinforced Bar
Three Point Bend Test
the area of uniform stress is quite small and concentrated under the
center loading point.
Four Point Bend Test
the area of uniform stress exists between the inner span loading points
(typically half the length of the outer span).
