HybridGlasPC: Glass-plastic composite systems as impact-resistant overhead glazing

Objectives and work programme

Glass-plastic composite systems are currently used in construction as vertical, impact-resistant glazing. The structure of the composites depends on the required resilience class and is composed of at least two external glass panels and a core of at least one polycarbonate panel. The composite is secured with an intermediate layer of special polyurethane. Its use as impact-resistant overhead glazing results in a fundamentally different mechanical stress on the glass-plastic composite elements than when used in vertical glazing. This must be considered in relation to the rheological and temperature-dependent behaviour of the plastics.

The objective of the research project is to develop suitable cross-section structures for glass-plastic composite systems that are capable of withstanding the static and dynamic stresses found in construction and offer the required resistance class in terms of impact resistance. The focus of the project is on investigating the load-bearing capacity and residual load-bearing capacity of a range of cross-section variants under varying conditions. The intermediate layer is modified in accordance with the stress acting on it. Appropriate material laws are derived for this purpose and calculation models are developed with the finite element method. The results of the investigations serve as an engineering summary of the glass-plastic composite systems in their capacity as impact-resistant glazing.

Partner

SILATEC Sicherheits- und Laminatglastechnik GmbH, Gelting