videoXtens biax 2-150 HP extensometer

Max. measurement range

160 mm

Temperature range

Ambient temperature
Up to 250°C

Type of test + change in width

Tensile, compression, flexure tests
Cyclic tests
Change in width measurement
Strain distribution
Test re-run
2D dot matrix

Material

Plastics
Fiber-reinforced composites

Determination of the tensile modulus and Poisson’s ratio with unprecedented accuracy

An extensometer for everything: from determination of the tensile modulus and Poisson’s ratio to specimen break, and for testing at ambient temperature as well as in a temperature chamber. The videoXtens biax 2-150 HP is an optical extensometer that was specifically developed for testing of fiber-reinforced composites and can measure without the need for added markings.

The videoXtens biax 2-150 HP is a unique optical strain measurement system, which determines the tensile modulus and Poisson’s ratio to ISO 527 with an accuracy never before achieved by non-contact extensometers.
This accuracy is also attained at temperature inside a temperature chamber.
Many typical tests on fiber-reinforced composites are covered with a single testing system.
Strain measurement on non-transparent fiber composites without the need for markings saves significant time and costs.

videoXtens biax 2-150 HP: high-precision strain measurement for fiber composite materials

The videoXtens biax 2-150 HP determines the tensile modulus and Poisson’s ratio to ISO 527 with a level of accuracy never before achieved with non-contact extensometers. This accuracy is also attained at temperature inside a temperature chamber. In addition, the videoXtens biax 2-150 HP can test marklessly, which saves a lot of time and money.

videoXtens biax 2-150 HP: high-precision strain measurement for fiber composite materials

Key advantages and features

High-accuracy determination of the tensile modulus and Poisson’s ratio

The most important criterion for accuracy of the non-contact videoXtens is the fulfillment of the strict ISO 527 requirements on the determination of the tensile modulus and Poisson’s ratio. In particular the transverse contraction constant (Poisson’s ratio) can be determined with an unprecedented accuracy for optical extensometers. The videoXtens biax 2-150 HP also meets these requirements for testing in a temperature chamber.

A significant win: since the same measuring system can be used both under temperature and at ambient temperature without changes to the hardware, reproducible test results are guaranteed.

Testing without gauge marks saves time and money

The effort required for specimen preparation is minimal for this extensometer, since gauge marks are not needed. The use of blue contrast lighting greatly enhances the contrast of the natural surface structure of opaque fiber-reinforced composites such as carbon fiber reinforced plastics (CFRP). Virtual gauge marks can be defined with the clearly distinguishable pattern. Therefore, manual specimen markings are not necessary. saving you time and costs.

Of course it is also possible to measure with alternative measuring options on the specimen.

Maximum accuracy under temperature conditions through ZwickRoell’s system competence

With the ZwickRoell temperature chambers, the videoXtens biax 2-150 HP+ satisfies the strict requirements for determining the tensile modulus to ISO 527 even in a temperature range of -80°C to 250°C. All temperature chambers have been optimally adapted to the optical extensometers. Together they form a closed system which minimizes environmental influences. Temperature control and convection in the temperature chamber are optimized so that extensometer resolution guarantees a maximum level of detail even under temperature.

Reliable, reproducible test results guaranteed

You are guaranteed to attain reproducible test results: Whether at ambient temperature or in the ZwickRoell temperature chamber, whether determination of a modulus in the initial measuring range or all values up to break, the same testing system is used without the need for hardware conversions. This also saves on time.

Wide range of applications for fiber-reinforced composites

An additional distinguishing advantage of the testing system is the number of applications for fiber-reinforced composites. These include tensile tests to ISO 527-4/-5, ASTM D3039, ASTM D4018, as well as determination of the shear modulus or shear strain to ISO 14129 and ASTM D5318. 3- and 4-point flexure tests to DIN EN ISO 14125 can also be performed without hardware expansions or extensometer conversion.

From the elastic range all the way to break, the videoXtens records the complete stress-strain behavior of the specimen with the highest level of accuracy. There is no risk of damage, since the strain measurement is contact-free. This is an important feature, especially for fiber-reinforced composites with their partially high energy specimen failure.

Testing without gauge marks

Non-contact measurement until break

Use in temperature chamber

Typical applications videoXtens biax 2-150 HP

Determination of the tensile modulus to ISO 527-1 Annex C

High-accuracy measurement of longitudinal strain with ZwickRoell array technology
Compliance with strict requirements to ISO 527-1 Annex C, also in a ZwickRoell temperature chamber

Determination of Poisson’s ratio to ISO 527

High-accuracy measurement of longitudinal strain with ZwickRoell array technology
Additional camera integrated in the system for high-precision measurement of change in width
Compliance with strict requirements for determination of the Poisson’s ratio, also in a ZwickRoell temperature chamber

Determination of the shear modulus or in-plane shear (IPS) strain ±45°

High-accuracy measurement of longitudinal strain with ZwickRoell array technology
Additional camera integrated in the system for high-precision measurement of change in width
The wide measurement range also allows for measurements up to break

3-/4-point flexure test to DIN EN ISO 14125

A software option is available for 3-/4-point flexure tests A hardware expansion or conversion is not necessary

Technical overview

Determination of the stress or strain curve up to break through a wide measurement range with high resolution
Brittle-fracturing fiber composites can be tested up to break without damaging the extensometer.

Can be mounted on an AllroundLine materials testing machine

Type	videoXtens biax 2-150 HP
Item No.	1078869
Longitudinal strain
Field of view (FOV)
With test area width 440 mm, AllroundLine	155 x 55	mm
With test area width 640/1040 mm, AllroundLine	175 x 65	mm
Initial
With test area width 440 mm, AllroundLine	5 ... 135	mm
With test area width 640/1040 mm, AllroundLine	5 ... 150	mm
Measurement displacement, max.
With test area width 440 mm, AllroundLine	145 - initial gauge length	mm
With test area width 640/1040 mm, AllroundLine	160 - initial gauge length	mm
Measurement travel, max. at 50 mm initial gauge length
With test area width 440 mm, AllroundLine	90 (180 % strain)	mm
With test area width 640/1040 mm, AllroundLine	110 (220 % strain)	mm
Measurement travel, max. at 75 mm initial gauge length
With test area width 440 mm, AllroundLine	65 (85 % strain)	mm
With test area width 640/1040 mm, AllroundLine	85 (110 % strain)	mm
Resolution at ambient temperature	0.15	µm
Transverse strain
Field of view (FOV)
With test area width 440 mm, AllroundLine	70 x 50	mm
Specimen width, max.	40	mm
With test area width 640/1040 mm, AllroundLine	85 x 65	mm
Specimen width, max.	55	mm
Resolution at ambient temperature	0.10	µm
General
Resolution to ISO 9513 in the ZwickRoell temperature chamber
At -40 ... 250 °C	Max. 0.4	µm
At -55 °C	Max. 0.6	µm
At > +250 ... +360 °C	Max. 0.5	µm
Frame rate / measured-value acquisition-rate, max.	500	fps / Hz
Accuracy class
To EN ISO 9513	0.5
To ASTM E83	B1 from gauge length 15 mm
Test speed, max.	1000	mm/min
Specimen thickness	0 ... 20	mm
Dimensions
Height	250	mm
Width	455 ... 705	mm
Depth	91	mm
Length of tunnel	90 ... 340	mm
Minimum version	testXpert III V 1.51
Scope of delivery
Measuring head with 3 digital cameras incl. 3 lenses
Tunnel for minimizing negative environmental conditions (e.g. air currents) with integrated blue contrast lighting
Software for image acquisition and evaluation
accessory case with alignment and marking aids
INC module (for tC: RS module)

Do you have any questions regarding our products?

Please feel free to contact our product experts.
We look forward to discussing your needs.

Downloads

videoXtens biax 2-150 HP PDF 2 MB
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