Optical Extensometry

Optical Extensometry uses a non-contact device with cameras or lasers to measure material strain, elongation, and deformation in real time during mechanical testing.
Key Features and Advantages

No Physical Contact: It tracks visual marks or patterns on the sample without touching it, preventing damage to thin, fragile, or delicate materials.
High Precision: It achieves high resolution (often down to sub-microns) and meets strict global testing standards like ISO 9513 and ASTM E83.
Extreme Environments: It works well with temperature chambers or high-heat furnaces where physical clip-on gauges cannot go.
No Wear and Tear: Because it does not touch the sample, it cannot be broken or damaged by violent or explosive specimen failures.

Common Applications

Testing soft, delicate, or high-compliance materials like films, foils, and elastomers.
High-temperature thermo-mechanical fatigue testing of metals and composites.
Quality control and research laboratory testing using advanced digital image correlation.