NanoTest integrated modelling modules
Analytical modelling utilising the effective indenter concept for stress calculations is a powerful tool for getting the most out of nanomechanical and nano-tribological tests.
Detailed simulated stress distributions enable data to be interpreted more effectively. They can provide mechanistic information which can be the key to unlocking exactly where and why coatings systems fail in scratch and fretting tests, and then to designing coatings with improved performance.
The effective indenter concept has also been applied to determine the coating elastic modulus free of substrate effects in a more reliable method than the standard unloading approach. At high temperatures indentation creep can make elastic modulus measurements less reliable, as shown at room temperature in the ISO standard, ISO14577-4, and to improve the accuracy of the high temperature data analysis a time-dependent effective indenter approach can be used.
Advantages of the NanoTest:
Micro Materials work with the Saxonian Institute of Surface Mechanics (SIO), an innovative modelling company who have developed these models and the accompanying intuitive software interface, to fully integrate this advanced modelling capability to the NanoTest system.
Key strengths of the NanoTest design (such as high lateral rigidity for straight scratch tracks, ultra-low thermal drift at elevated temperature etc) enable production of high-quality artefact-free data to be used as direct input to the physical-based models.