UGC-VE-4105-3D 5 MPx 3D Stereo Video Extensometer

Stereo pair of 5 MPx cameras that measures in 3D and cancels out-of-plane error

The UGC-VE-4105-3D is a non-contact optical (video) extensometer from the X-Sight 4000-3D Series, supplied, configured and supported by Universal Grip. It tracks gauge marks on the specimen with two 5 MPx cameras in one housing and reports strain, total length, delta length and angle in real time, so it can stay on the specimen through break with no knife edges to slip or damage. The stereoscopic camera pair captures spatial movement and deformation, making results resilient to out-of-plane specimen motion and improving accuracy.

 

Measuring length, accuracy class and sampling rate

Per ISO 9513 the UGC-VE-4105-3D measures 110 mm at Class 0.5, 220 mm at Class 1. Class 0.5 is the tight class labs choose for modulus and proof-strength work; ISO 6892-1 calls for Class 1 or better for yield and proof strength and allows Class 2 for elongation after fracture.

Typical sampling is 175 Hz (75 Hz with the full image), and narrowing the view width raises it to 1 kHz. Higher pixel counts trade frame rate for field of view: at this resolution the camera favours a balance of field size and speed.

As a rough sizing check: with an 80 mm ISO 6892-1 A80 gauge length, the Class 1 measuring length of 220 mm lets the gauge marks be followed to about 180% elongation before they leave the calibrated field, assuming the marks start near the centre of the view. We confirm the real limit from your specimen, grips and expected elongation.

 

What the UGC-VE-4105-3D is best for

• metals to ASTM E8/E8M, ASTM A370 and ISO 6892-1, including elevated temperature work to ISO 6892-2

• sheet metal r-value and Poisson's ratio with the transverse (TR) module

• plastics to ASTM D638 and ISO 527-1

• composites to ASTM D3039 and compression to ASTM D695

 

Why measure in 3D

A single camera sees only in-plane motion, so a specimen that moves toward or away from the lens reads as false strain. The stereo pair in the 4000-3D housing triangulates every gauge mark in three dimensions, which removes that error for thin sheet, film, composites and parts that twist, bow or slip in the grips. The 3D line-probe module is included.

 

Choosing the lens and working distance

Measuring length, lens focal length and working distance are linked: choose two and the third follows. For the Class 0.5 field of view (110 mm high by 92 mm wide) the working distances are 16 mm lens 190 mm, 25 mm lens 300 mm, 35 mm lens 440 mm (from the front cover). Longer working distances reduce LED intensity and can need longer shutter times, so tell us your frame and chamber geometry and we will pick the lens.

 

Connects to your testing machine

Strain is streamed live to the test-machine controller over DOLI Binary, MODBUS, HP Video, TCP/IP or RS232, as an analog signal through auxiliary D/A converters, or as an encoder-style quadrature pulse. The JSON and MRT APIs let your test software start and stop measurement, switch methods and set the gauge length. That is how we retrofit video extensometers to Instron, MTS, ZwickRoell, Shimadzu, Test Resources, ADMET and Galdabini frames; see retrofitting a video extensometer to an existing machine.

 

Compare the UGC-VE-4105-3D with similar models

• UGC-VE-4106-3D: 4000-3D Series stereo, ASTM-optimized, ASTM E83 Class B-1, 200 Hz typical

• UGC-VE-4109-3D: 4000-3D Series stereo, 9 MPx, Class 0.5 220 mm, 75 Hz typical

• UGC-VE-2105: 2000 Series single-camera, 5 MPx, Class 0.5 130 mm, 175 Hz typical

• UGC-VE-2205: 2000 Series dual-camera, 5 MPx, Class 0.5 2 × 130 mm, 175 Hz typical

Not sure which model fits? Read how to choose an extensometer, gauge length selection for video extensometers, or compare all models on our video extensometer page.