PSI - Issue 17

Radek Doubrava et al. / Procedia Structural Integrity 17 (2019) 190–197 Radek Doubrava/ Structural Integrity Procedia 00 (2019) 000 – 000

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The results from the optical sensor measurement on the metal test panel (Fig. 8a) show the influence of the secondary impact of remainder of the polystyrene sabot on the test specimen. The time of the secondary impact was estimated from the high-speed camera pictures (Fig. 8b).

5. Conclusion

A comparison between the test and simulation results demonstrates the consistency of the damage initialization predictions in the composite material and the plastic deformation in the metallic material. The application of a new technique for the dynamic displacement measurement using an optical sensor during the impact process provided unique quantitative results used to verify the numerical models. These tests provide important information for design and computational analysis. Testing and numerical model verification based on different impact speeds also provide important generalizations for the application and optimization of both composite and metal structures. Furthermore, the results demonstrate the need to increase the sensor measurement range for applications related to high-speed impact analyses and to eliminate the secondary impact of the remainder of the sabot.

Acknowledgements

This project was developed with the institutional support of the Ministry of Industry and Trade of the Czech Republic whose funds were directed to the development of research organizations.

References

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