Originally created for composite testing, our systems are fine tuned for tensile testing.Through specialised algorithms and lenses, the system performs as a class 0.5 extensometer, even for strains under 1%, allowing accurate yield and modulus measurements. Using tailored lenses this range can be extended for strains up to 600%, allowing the priorities to be tuned for each materials.
To integrate with your testing machine, a traditional 10V DC output is possible for interfacing with traditional strain channels. Coupled with the fast specimen preparation and the removal of knife edge drawbacks, our systems offer a range of advantages compared to traditional methods.
Multiple point-to point measurements can be made simultaneously between dozens of points on the surface, allowing measurements of axial and transverse strain at many locations.This allows the system to be used as an averaging biaxial extensometer to give you more detailed information.
Measurements through failure can be taken without any threat of damage to the extensometry equipment so tests can run without interruption.
Class B-1 / 0.5 requirements are met, even when testing for strains between 0.1 to 1% on a 10 mm gauge length, ensuring accurate modulus measurements.
Unlimited gauge lengths are possible through the use of appropriate lenses.Past specimens include individual 7µmcarbon fibres [hyperlink] and 6m metal cables.
High temperature testing is possible, with the cameras only requiring line of sight through the furnace window
High speed testing can be evaluated using post-processing software to analyse high-speed videos.
As the performance of materials become more demanding, so do the requirements of extensometry devices.Traditional contact methods have always had their limitation, which are becoming increasingly more apparent.Non-contact methods avoid problems such as:
No contact point slipping which can occur when gripping smooth materials such as plastics and composites.
No added stress concentrations, which can be introduced through gauge attachment
Modulus and total elongation can both me measured with one system, essential for high elongation polymers and rubbers.