Integration of bonded window strips and glass fronts in the strength analysis of ships [IGF-No. 18465 N]

Research partner: Technische Universität Hamburg-Harburg, Ship Structural Design and Analysis (Prof. DSc. (Tech.) Sören Ehlers), Fraunhofer-Gesellschaft e.V. Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM (Dr. Markus Brede)

Time period: 01.12.2014 to 30.11.2016


Motivation/Background

On ferries and passenger ships as well as mega yachts strips of windows and glass fronts extending over several decks are built. The glass panes are connected via elastic adhesive joints to the metal structure. Under current regulations the bonded glass panes are not taken into account in the structural analysis, although the contribution of the bonded glass panes to the shear stiffness can be significant. This means that the consideration of the bonded glass panes in the stiffness and strength calculation provides a potential for simpler designs.

 

Summary of planned objectives and actions

Research centers are the Institute for Ship Structural Design and Analysis of Hamburg University of Technology (TUHH) and the Fraunhofer Institute for Manufacturing Technology and Advanced Materials (IFAM). The project is carried out in cooperation with industrial partners like ship yards, window and adhesive manufacturers, engineering offices and classification societies. The main objective is to provide an experimentally verified procedure for the design of bonded strip windows and glass fronts considering its stiffness in ship structures or superstructures.

The experimental investigations are carried out with large models at TUHH and component-like coupon specimens at IFAM. The large-scale experiments will be performed in an existing test rig at TUHH with three different models and will be accompanied by calculations.

 

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