Influences of Penetrometer Probe Tip Geometry on Bearing Strength Estimates for Mine Burial Prediction
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION CANBERRA (AUSTRALIA)
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An important parameter for the prediction of mine burial on impact, when a mine is first laid, is the sediment bearing strength profile. A number of nations have been developing easily deployable penetrometers for measuring bearing strength relatively quickly. The plan would be to use these in route survey operations. Previous joint experiments by TTCP The Technical Coperation Program nations have found that the measured bearing strength decreases as the diameter of a penetrometer increases. This effect is not currently understood, but in this report it is shown, with the help of some new experiments, that with the right penetrometer design it is possible to obtain bearing strength profiles which can be validly used for mine burial prediction. Finally a particular penetrometer configuration is recommended for navy use.
- Underwater Ordnance