- Conference date: 30 April–3 May 2012
- Location: New Mexico, USA
A laser shock technique has been used as a laboratory tool to produce different levels of damage inside T800/M21 CFRP (Carbon Fiber Reinforced Polymer) samples. The resulting defects for a given sample have been controlled by varying laser source parameters. A VISAR (Velocity Interferometer for System and Any Reflector) has been used to measure the sample back face velocity, which enables a time-resolved detection of inside damage thanks to the laser shock wave theory. Moreover, a preliminary numerical modeling of the composite sample under laser shock has been developed using LS-DYNA software in order to improve the knowledge of composite behaviour under high impact energy level. These numerical tools have been compared to the experimental VISAR signals in order to validate the constitutive law computed. The damage resulting from this local tensile loading has also been simulated and compared to observations performed on composite samples with different post-mortem analysis.
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