Tensile testing machine: Rely on a fast, cost-effective and non-destructive alternative

The tensile testing machine provides the user, among other things, with the characteristic values of the Rp0.2 yield strength and the tensile strength Rm. For example, the tensile strength determines the maximum stress with which a material can be loaded. To determine it, the tensile test is the most common method. However, there are individual disadvantages:

  • Components are destroyed
  • Costly and time-consuming sample preparation
  • Small parts often cannot be tested

ThereforeImprintec has developed a new method(indentation method) which combines the advantages of a flexible hardness tester with the comprehensive characteristic value determination of a tensile test machine.

The innovative testing technology from Imprintec combines the informative value of the tensile test and the simple application of the hardness test in one machine - you receive all important characteristic values in one test path.

Make your production plant fit for Industry 4.0! We would be happy to inform you about the possibilities of integration and automation by integrating a test module - contact us via contact form, by e-mail or call us directly at 0234/ 970 414 02.

How does a conventional tensile testing machine work?

For the test, one or more specimens are prepared from the material to be tested. The individual specimens are clamped in the tensile testing machine and uniformly stretched until they break. The measured values obtained in this process are plotted in a stress-strain diagram. From this, the characteristic values yield strength, tensile strength and elongation at break are determined. The exact procedure is regulated for metals in the standards DIN EN ISO 6892-1, ISO 6892, ASTM E 8, ASTM E 21, DIN 50154.

Thus, performing the tensile test with a tensile testing machine means:

  • preparation of the samples can be time consuming and expensive
  • due to the destruction of the specimen, the tensile test is only suitable as a component test to a limited extent
  • small geometries can only be tested to a limited extent
  • the test can only be automated in exceptional cases

To circumvent these limitations, Imprintec has developed a new method for materials testing: With the indentation method according to DIN SPEC 4864, a fast, cost-efficient, pinpoint and non-destructive determination of the stress-strain curve is possible. 

Correlation of tensile strength Rm between tensile test and indentation method for steel
Correlation of tensile strength Rm from tensile test (y-axis) and indentation method (x-axis)

What is the performance of the testing machine i3D from Imprintec compared to the tensile testing machine?

With the test method according to DIN SPEC 4864, Imprintec combines the simplicity of hardness testing with the detailed informative value of a tensile test machine. The software-based comparison of FEM simulations with real measured data provides you with the desired characteristic values 0.2% proof stress Rp0.2 and tensile strength Rm.

Sequence of the procedure with the i3D testing machine:

  • Creation of a test print
  • 3D measurement of the test impression
  • The software algorithm determines the values by matching them with FEM simulations

The entire procedure is fully automatic and takes only a few seconds. The operating user only needs basic knowledge of materials testing - comparable to that of hardness testing. This eliminates the need for time-consuming sample preparation - you save valuable time and money with the indentation process.

We would be happy to demonstrate the operation of our strength testing machine (or hardness and tensile testing machine) in person - simply make an appointment with us for a product demonstration in Bochum!

i3D WLI

The testing machine i3D from Imprintec: Convince yourself of the advantages of the combined hardness and tensile testing machine

Real and local component inspection, at incoming and outgoing goods as well as in the intermediate inspection - with reliable results for the

Tensile strength Rm

Yield strength Rp0.2

in just one work step - this is what the i3D testing machine from Imprintec does.

This results in decisive advantages for your metalworking company:

  • Cost savings: The time-consuming and cost-intensive preparation of samples is eliminated, as is the expensive use of personnel and machinery for internal testing.
  • Time saving: The testing time can be reduced from several days when using an external tensile test in a materials testing laboratory to a few minutes.
  • Conservation of resources: The innovative universal testing machine enables low-destructive testing.
  • Pinpoint accuracy: Unlike tensile testing machines, the indentation method allows the stress-strain curve to be determined with pinpoint accuracy.
  • Versatility: Even small components and samples can be tested.

Imprintec offers the fast and low-destructive tensile test alternative not only as an individually configurable testing machine - the modification of existing testing systems is also possible.

Feel free to contact us personally:

+49 (0) 234 970 414 0 1

 

Imprintec GmbH
Universitätsstraße 142 
44799 Bochum
T +49 (0) 234970414 00
F +49 (0) 234970414 09
info@imprintec.de