Fibre reinforced polymers (FRP) offer a high potential to reduce kinetic energy. As a consequence
of this, fibre reinforced polymers often have a higher risk of being exposed to impact loads. The
knowledge of the mechanisms and of the material loading during and shortly after an impact load is
essential for an ‘impact-load-monitoring-system’ to predict possible structural failures. Especially a
prognosis of structural failures caused by – often unrecognized - barely visible impacts is an
important factor. Primary impact damages often leads to a sudden structural failure. These
unheralded failures seems to be one of the most important problems in product development for the
aircraft industry. By measuring the structural response at several discrete measurement points an
impact can be detected, reconstructed and also rated.