A software platform for all plastics and composites testing

testXpert III's workflow-based user concept is purely intuitive and identical for all materials testing machines and instruments.
What advantages does this offer? Learning the testing software is easy after using it only once—a future-oriented and standardized operating concept for all applications and test types.
testXpert III enables the user to benefit from over 150 years of materials testing experience and more than 20,000 successful installations around the world.
Pre-programmed and tested standard test programs are available for all common standard tests. This simplifies the first steps and ensures that the test sequence and result evaluation are created in accordance with the standard.
Greater freedom in designing the test sequence, operating steps, result calculation and data logging is offered by Master Test Programs. Here each parameter can be set individually.

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Melt Flow Index Testing
Correction Curve
Customized Testing
Additional functionalities
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23.07.2019

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Reliable Test Results in Melt Flow Testing

Our customers have recurring requirements when it comes to melt flow testing. Topics such as the testing of high flow thermoplastics, increasing efficiency when testing at different loads, or saving space in the lab when a multiple instruments are required all play an important role.

Testing with multiple instruments

Space savings when testing with multiple instruments

In labs with multiple instruments, testXpert III makes it possible to configure and control up to six Aflow and/or Mflow extrusion plastometers with one PC. Central operation and the saving of results from a single workplace is rational and affords a quick overview of all tests currently in progress. For a clear overview of operations, we recommend using two monitors.

Automatic bubble detection

Automatic bubble detection that prevents measurement errors caused by air inclusions by detecting them in the plastic melt.

Live presentation of the melt volume flow rate

Live display of the melt volume rate that follows the progress of melting and the behavior during measurement and graphically or numerically displays the test piston speed when the test starts in cm³ per 10 min. or in g per 10 min. when the melt density is preselected.

Various loads

Increasing efficiently testing with various loads

Manufacturers of polyethylene normally test at 2.16 kg and at 21.6 kg. Two separate tests are often needed for this. ZwickRoell's Aflow can combine both tests in one. And testXpert III testing software helps define the multi-stage test. In this way, specimens can be successively tested in one test with different weights and without mechanical adaptation.

The APC function – automatic optimization of measurement intervals

When measuring flow rates, measurement intervals must be set so that the measurement times are as great as possible, and in the case of MVR measurement, the measurement travel is as great as possible. This makes the method highly accurate. When outside of the optimal range, the number of measurement errors increases rapidly.

The Mflow and Aflow extrusion plastometers are equipped with the APC function. This function measures the speed of the piston shortly before actual measurement begins. Using this information, the best possible type of control, meaning travel or time control, is selected and set for the best suited measurement interval for the expected MVR value. Time-consuming pretests are no longer necessary and the process required for programming tests is reduced to setting a few test parameters that apply to all materials to be tested.

Correct Specimen Alignment

In the case of brittle specimens, or in creep and fatigue tests, the exact alignment of the load string is critical to obtaining accurate test results. Small angular errors and offsets must be able to be detected (strain-gauged specimen) and then corrected mechanically. For this purpose, ZwickRoell offers a special alignment fixture and the software function for aligning specimens.

Alignment fixture for alignment measurement

More information on Alignment Measurement

Automatic correction for machine deformation

testXpert III testing software offers the unique option of eliminating materials testing machine self-deformation while achieving high-precision measurement of components, without the need for additional extensometers.

The "Determine correction curve" test program allows testing system self-deformation to be measured quickly and easily for each test arrangement.
For this, a force-deformation curve is recorded once with no component present. In other words, the compression platens are loaded up to machine nominal force and the resulting curve is saved in the system as a correction curve.
The assignment of the correction curve to the corresponding test arrangement is saved as a system configuration in "Set up testing system", so that even with different test arrangements the right correction curve will always be loaded.
In the actual test, deformation correction takes place online. The amount of correction is automatically equal to the deformation of the correction curve at the corresponding force. This enables determination of extremely precise deformation values, including in compression tests on components for which an extensometer cannot be used.
Another important point is that deformation correction takes place directly in the electronics. Control directly to this channel is possible, enabling precise travel to the set targets for the deformation, when testing springs for example. In systems lacking this function the deformation target would not be attained, resulting in inaccurate determination of the relevant force characteristic values.

Customized Test Sequences with the Graphical Sequence Editor

The Graphical Sequence Editor gives you all the flexibility and freedom you need. It is the perfect tool for creating individual test sequences of any type, allowing you to freely combine test events, parameters and results according to your requirements.

Operation of the Graphical Sequence Editor is configured to your individual needs by means of drag and drop.
Simulation of the created test sequence ensures that the testing steps are set up logically and that the materials testing machine nor the specimens get damaged.
Freely programmable test sequences are a requirement, particularly in research applications. The Graphical Sequence Editor is the perfect tool for n creating non-standardized test sequences.