Plastic Tensile Testing

Tensile modulus how much a material can deform stretch in response to stress before it yields.

Plastic tensile testing.

Iso 527 2 is performed on a universal testing machine by applying a tensile force to a sample specimen and measuring various properties of the specimen material under stress. Needs to be servo controlled to keep a constant rate of speed. Elongation the increase in gauge length after break. Elongation at break the ratio between.

Elongation at yield the ratio between increased length and initial length at the yield point. Achieving reliable results in tensile testing of plastics automotive and medical applications increasingly call for tighter tolerances requiring suppliers to perform their own testing. How to perform an astm d638 plastic tensile strength test test procedure. The test is conducted at tensile rates ranging from 1 to 500 mm min until the specimen fails yields or breaks.

The figure below from quadrant engineering plastic products shows the test geometry. Cut or injection mold your material into one of the five dumbbell shapes. How to perform a tensile test on plastics according to iso 527 2. Tensile strength the maximum amount of tensile stress that a material can withstand before failure through a.

Margaret johns sep 14 2017. The exact shape you use is. Tensile testing is commonly used and represents an integral input to quality control. For this test plastic samples are either machined from stock shapes or injection molded.