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Video extensometer for tensile tests on reinforcing steel
Deformation measurement acc. to EN ISO 15630 and DIN 488
The ONE-ROD video extensometer is an easy-to-use optical extensometer optimized for tensile testing on reinforcing steel and wire rods. Config-uration and height of the extensometer are opti-mally designed for tensile tests on rebar accord-ing to EN ISO 15630 and DIN 488.
Advantages:
- Enables longitudinal/transverse strain meas-urement on specimens with a falling off oxide or rust layer
→ No loss of measurement marks when sur-face layers are falling off - Minimal requirements for specimen prepara-tion and calibration
- Operates reliably even under challenging con-ditions
- Robust against slightly bent specimens
- Determination of strain distribution over the entire length
- Solid industrial housing
Evaluation software (in combination with mate-rial testing software LabMaster):
The strain measurement is contactless via a two-camera system. The signals from the two cameras are processed in real time using DIC (Digital Image Correlation) software.
The averaged deformation is typically determined between several measurement points. The determined deformation is displayed time-synchronously in the LabMaster material testing software, for example as a stress-strain curve, and is used, among other things, to determine the per-centage total extension at maximum force AGt and the elongation after fracture A10, A5, A11,2.