Modular RoRo deck

Modular decks for RoRo vessels (non-metallic)

Custom-made hull

Custom made hull for offshore vessel

Fully outfitted and modularised cabin

Multi material lightweight cabin for passenger ships

Panel system (bio-based and other)

Lightweight components for high loads and fire class

Composite block on steel deck

Composite superstructure module on steel deck for multi purpose vessels

Versatile walls

Integration of system for internal walls and superstructure
of cruise ships into shipyard processes

Lightweight rudder flap

Lightweight rudder flap

3D-printed propeller blade

Propeller blades by additive manufacturing

Panel system (truss structure)

Modular light system for less critical internal walls and superstructure

Aluminium composite panels

Lightweight aluminium and composite walls for work boats

High tensile steel decks

Lightweight decks using high tensile steel in cruise ships

Design details (high tensile steel)

Highly loaded structural details from high tensile steel
in passenger and research vessels

Patch repair - composite overlays

Composite overlay to repair and improve metallic and
non-metallic structures

RoRo deck

custom-made hull

cabin system

aluminium panels

superstructure

versatile walls

rudder flap

propeller blade

truss structures

bio-based panels

steel decks

steel details

patch repair

Composite overlay to repair and improve metallic and non-metallic structures

Approach

Starting from previous experiences, RAMSSES project, through the research developed within Patch Repair, will allow applying innovative repairing solutions to metal and composite marine structures. Also, reinforcement composite solutions will be developed to be applied over steel welds, in order to improve their in-service behaviour, preventing fatigue damage. This involves the study of three different demonstrator cases regarding composite overlamination techniques: the use of composite patches for crack repairing in structural details of a cruise ship; the use of overlamination techniques for repair and reinforcement of joints applied to a hull section for a large offshore vessel; and composite overlamination techniques will be studied and applied to reinforce welded HSLA steel joints, with the aim of improving their fatigue life.

Implementation

The technical plan was developed by a sequential process including five main steps:

  1. Selection of the most representative demonstrator cases related to each research line proposed.
  2. Selection of materials to be tested and establishment of materials test requirements to calculate and model the composite repair and reinforcement solutions.
  3. Establishment of related testing relevant for each demonstrator case (medium and large scale).
  4. Performing tests and selection of final materials combinations and manufacturing techniques according to the results previously obtained.

Aim

The resulting test plan consists of a considerably large matrix, with pyramidal order. The results obtained in each of the phases will allow to select the materials and techniques to be applied in the next one. In each of the stages the number of tests to be carried out will be reduced until reaching the final demonstrators testing phase.