Abstract
In the STANAG 4569, AEP-55, Volume 2, a NATO standardization agreement defining the protection levels for the occupants of logistic and light armored vehicles, the testing conditions for underbelly improvised explosive devices (IEDs) are specified. This document regulates that for the loading tests, the underbelly threat has to be buried in water-saturated sandy gravel. However, the use of sandy gravel has some drawbacks, for instance reproducibility, time consumption, and cost. This paper focuses on the investigation of alternatives to sandy gravel, which could produce similar specific and cumulative impulses. The impulses are measured with a ring technology developed at the Fraunhofer EMI. These experimental results can be used to develop new test conditions at original scale that are more reproducible, easier to handle and cheaper than the actual tests made with STANAG sandy gravel.
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