DNV releases a white paper on the use of steel plate – light-weight concrete – steel plate sandwich material in marine constructions. In this paper DNV introduces the studies completed on this technology. Relevant patents for the technology have been released as well.

Ship construction illustration 181pxl

"We want to make the technology available for the industry, and by releasing some of our ideas and studies we hope this initiative can foster open innovation around using new materials in ships and offshore structures," says CEO of DNV, Henrik Madsen.

DNV is prepared to assist the industry and has deep competence in both concrete and sandwich theory, and can contribute with development and qualification of such technology. In order to give a brief introduction to the technology, DNV Research and Innovation has made a white paper (download available on right hand side) in addition to a report from a technical study (also available as a download). The Offshore Standard for Offshore Concrete Structures (DNV OS C-502) can also be downloaded by following the link on the right hand side. View an introductory video for the project below.

The original idea for the project came from DNV Research and Innovation. The concept is to use a composite of a steel sheet – light weight concrete – steel sheet to replace steel plate and secondary stiffener structures. The idea was initially developed to address safety issues with bulk carriers and the abbreviation INCA originates from an INnovative Bulk CArrier design.

Since then, DNV has been working to explore the possibilities and potential for the SCS concept together with a large shipyard group and other industrial partners. The concepts were granted patents in a number of countries. A project headed by Hans Ramsvik was initiated in late 2009 to assess the technical feasibility of using INCA in marine vessels. The project’s focus was on exploring the commercial potential of the INCA sandwich technology for use within the marine industry and to identify a way forward for possible industrialisation of the technology.

This included also a recommendation on whether to maintain the current patent portfolio which was originally taken to avoid other industry stakeholders from blocking the broader development of SCS sandwich structural solutions.

Video: INCA - Concrete-steel sandwich technology