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High Speed Study of Composite Failure

  • Tuesday, 12th April 2016
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  • Reading time: less than a minute

The Institute for Carbon Composites, Technical University of Munich, Germany is using a Kirana Ultra High-Speed camera to record high resolution images of a unidirectional Carbon-Epoxy composite material undergoing a dynamic tension test on a split-Hopkinson Tension Bar.

Specialised Imaging explains that the experimental setup was to determine the mechanical properties of Carbon Epoxy composites under high strain rates (100 – 1000 1/s). The deformation and the failure patterns of these composite materials, was observed and recorded in tests that lasted less than 200 micro seconds.

According to Specialised Imaging, using the Kirana camera has provided the LCC with the ability to capture high-resolution images of the ultra high-speed events that often occur when undertaking dynamic tension tests. Taking up to 5,000,000 frames per second, and shuttering every 100 nanoseconds, there is no compromise in capturing high quality data. The data is exported in 180 frames so each test can be easily saved and viewed.

Specialised Imaging adds, that using the images captured by the Kirana ultra high-speed camera, the LCC researchers imported them into state-of-the-art Digital-Image-Correlation (DIC) software enabling the calculation of the in-plane strain-field. In addition, the images revealed useful information regarding the deformation and failure mechanisms of the specimens.

 


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