Burst or puncture fixtures are used to determine the resistance of a material to the penetration of a probe.
The material is typically held by a set of clamping rings and is subjected to biaxial stresses which are representative of the stresses encountered when the material is being used in an end-product.
Principle of Operation
Fixtures are typically comprised of a lower frame with a clamping mechanism attaching to the base of the testing system, while a probe is attached to the load cell on the moving crosshead.
The test requires a low rate of travel moving the probe into the specimen until failure.
Common results from these tests are maximum force, force at break, penetration distance, and energy to break.