Scale modeling of turbine-missile impact into concrete. Final report. [PWR]
Fourteen experiments were performed with one-eleventh scale of turbine hub sectors impacting reinforced-concrete wall sections of reactor-containment buildings. The scale-model tests provided the penetration depths and backface scabbing thresholds, and set a lower bound on the perforation thresholds. Comparison of the scale-model results with predictions of NDRC design formulae showed that these formulae adequately predicted the frontface penetration depths, but underpredicted missile-impact velocities to produce backface scabbing by factors of 2 to 3. Finite-difference computations of a missile impact predicted the fracture location in the target that led to cratering and showed the importance of missile interactions with the reinforcing grids. The overall conclusions of the work are that scale-model tests can be used effectively to examine the response of reinforced-concrete targets to various turbine-missile impact conditions and that concrete walls are substantially more resistant to failure by turbine-missile impact than predicted by current design formulae.
- Research Organization:
- SRI International, Menlo Park, CA (USA)
- OSTI ID:
- 6487824
- Report Number(s):
- EPRI-NP-2746; ON: DE83901826
- Country of Publication:
- United States
- Language:
- English
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