Large-Deformation Measurement of Rubber

In large-deformation mechanical testing of rubber materials, specimens often experience strains of hundreds or even over a thousand percent, with pronounced nonlinear deformation, local tensile concentration, and rebound behavior. Under such large deformations, conventional contact extensometers tend to slip, detach, or restrict free material deformation, making true and reliable data hard to obtain. To address this difficulty, Haytham Technology's DIC-basedvisual strain gauge delivers a stable, mature non-contact solution for large-deformation rubber measurement.

In rubber testing, the system uses optical tracking of marking points, continuously recognizing high-contrast marks pre-applied to the specimen surface and computing displacements, obtaining displacement and strain data during tension without touching the specimen. This avoids the failure of conventional speckle patterns under very large strains, making it better suited to large-strain testing of flexible materials such as rubber.

Compared with conventional single-point or mechanical measurement methods,Haytham DIC it performs synchronized multi-gauge-length measurement, fully reflecting deformation differences and evolution across regions during tension, cyclic loading, or fatigue. The system's algorithms are optimized for large displacement and strong nonlinearity, covering the full range from small strain to extremely large deformation with stable, continuous measurement.

Results can be used directly for stress-strain curves, gauge elongation changes, and local deformation behavior analysis, and are widely applicable to natural rubber, silicone rubber, thermoplastic elastomers, and various rubber composites. In tire materials, damping components, seals, and flexible structure research, Haytham DIC has become a key technique for large-deformation rubber measurement, providing reliable data support for material performance evaluation and engineering applications.