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Project Abstract
Description of Work
Milestones and Expected Results
Co-operation with other Projects
Sandwich Poster
Final conference and downloads
Conference photos


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BALance Technology Consulting

Sandwich is sponsored by the European Commission under 5th Framework programme Growth KA III

project No. 10862



Final conference and downloads

putting research results into operation
exploiting results from EU funded research projects:
public conference,
Friday 24. 10. 2003, 09:00 17:00
Papenburg, Germany
Hotel Alte Werft, Meyer Werft (I-Core Halle)

  Thomas Witolla (JLM)
Overview on RTD Topics objectives and visions

Parallel session A


Thomas Reinert (JLM) / Markus Lehne (BALance)
Overview on Sandwich
This presentation will focus on the research done in the field of laser welded metal sandwich panels from the perspective of a shipyard. Application cases for SANDWICH panels will be given.


Philippe Noury (DNV)
Guidelines for laser welded Sandwich panels
Novel structural solutions such as metal-composite sandwich panels are a continuous challenge for regulating bodies and engineering offices. In the absence of specific requirements, designers and surveyors faced difficult tasks. Today the Guidelines provide a unified basis for design and approval. The Guidelines specify a comprehensive set of general requirements and acceptance criteria. The Guidelines are intended to serve as a standard and to form the basis of DNV's official documents for more streamlined and transparent verification process. The Guidelines reflect the basic philosophy of rules, codes and standards used in the marine, rail and automotive industry and are intended to supplement these normative documents.


Evgeny Barkanov (RTU)
Methodology and optimal design of advanced stiffened panels
Optimisation methodology based on planning of experiments and response surface technique. Formulation and solution of sandwich-grillage optimisation problem.


Dan Zenkert (KTH)
Practical design solutions for laser welded Sandwich panels
This presentation will deal with stiffness and strength prediction of
laser-welded foam filled steel sandwich panels. The strength issues
studied are focused on localised buckling and the effect of foam
filling. Finally, an example will be shown on how this can be used for
optimal design.


Pentti Kujala (HUT)
Design challenges and demand for future research
The major design issues for practical applications of steel sandwich panels are summarised. The presentation includes topics such as: elastic response and strength formulations, fire safety, corrosion and joints design. The current state-of-art is reviewed and finally future research needs are shortly discussed.


Janusz Kozak (TUG) / Boshidar Metschkow (Infert)
Sandwich testing procedure (DoE)
Presentation of test planning for global bending tests of i-core and corrugated laser welded sandwich panels. The tests are carried under varying of load cases and boundary conditions. On the base of very extensive tests materials are presented the evaluation steps and the derivation of approximate equations for calculation of panel deflection.


Alessandra Alessa (TXT) / Gregor Berns (JLM)
Sandwich Design tool - demonstration
Presentation of SANDWICH Design Tool version 2.4 with new GUI. Included are modules for fire, local fatigue, fatigue, local impact and crash tests, as well as the routines for grillage, damping & vibration and cross-section optimisation.

Parallel session B

Lars Eric Etzold (JLM) / Heiko Nordloh (BALance)
Overview and outlook
Coating is an increasingly important area for ship owners and operators. The regulations being imposed in Europe on Health and Safety and environmental control place an extra burden on ship yards. This presentations gives an overview of the research performed in the ECOPAINT project covering the improvement of health and safety performance, reduction of environmental impact, and the development of guidelines for best practice coating processes. A software tool for the monitoring of VOC emissions will be introduced. Finally, an outlook to the project "Environmentally friendly coatings for ship building and ships in operation - ECODOCK" will be given.

Walter Heck (GTF FREESE)
Environment friendly coating processes
This presentation gives an overview of the investigations to improve surface preparation and application technologies for marine coatings. The different methods were evaluated according to economy, environmental impact, health and safety conditions and technical performance. The presentation introduces how six different surface preparation methods were compared through large-scale tests and target tests at test panels. Five different application methods were compared through large-scale tests at Jos. L. Meyer yard and at the premises of Wagner Systems Technology Centre in Markdorf. A main focus of the presentation will be on the technologies dry ice cleaning and electrostatic spraying.

Thomas Reinert (JLM)
Production of Sandwich X-core structure
This presentation will focus on production aspects of laser welded metal sandwich panels with respect to crashworthy structures.

Alex Vredeveldt, Martijn Wolf (TNO)
Crashworthiness of the SANDWICH X-core structure
There are three tasks to be accomplished in this project. The first task is to establish a method for taking into account the effect of crashworthy side structures on the survivability of ships with respect to flooding through a collision damage hole. The second task is to design two side structures with an exceptional crashworthiness which performs at least two times better than conventional structures. The third task is to introduce crashworthiness into design practice. The work consists of both desk studies and full scale experiments. The presentation will give an overview of the main outcomes of these tasks.

Dr. L. Zhang, Dr. E.D. Egge, Dipl. H. Bruhns (Germanischer Lloyd)
Approval Procedure
Concept for Alternative Arrangement in Relation to SOLAS Ch II-1, Part B-1, Reg. 25-1.3. The basic idea of the approval procedure is to compare the critical deformation energy in case of side collision of a strengthened double hull structural design to that of a reference one complying with the damage stability requirement of SOLAS Ch. II-1, Part B-1, Reg. 25-2,3,4.

Jan Weizenböck (DNV)
The BONDSHIP project: outline, key results and future developments
In this talk the BONDSHIP project will be presented; its aims and partnership and the approach taken in the project. Next some of the key results and achievements will be discussed with focus on the project guidelines. Finally future developments regarding the guidelines and possible new applications for adhesive bonding will be outlined.

Dr. M. Brede (Fraunhofer Institut für Fertigungstechnik und Angewandte Materialforschung)
Design and testing of adhesive joints in ship-building
Examples from the BONDSHIP mock-up Application cases for adhesive bonding will be discussed with respect to the
design process, manufacturing and testing. The design process has to consider a variety of requirements according to structural loading, ageing at maritime environments, fatigue behaviour and manufacturing.