Adhesively bonded joints between FRP sandwich and metal: Different concepts and their strength behaviour

Markku Hentinen, Martin Hildebrand, Maunu Visuri

Research output: Book/ReportReport

11 Citations (Scopus)


This report presents several joint elements developed for joining large FRP sandwich panels to ships. Metal profiles are adhesively bonded to the panels in the prefabrication phase of the sandwich. This makes it possible to weld the FRP part directly to the metal structure in the shipyard. Three different joint concepts were optimised and analysed taking into account the potential applications and production methods. Prototype joints of the concepts were manufactured, and the static and fatigue strength of the joints was tested under local loading conditions similar to those occurring in laterally loaded panels. The test program of the joint concepts included welding tests, static strength tests (at room temperature, raised temperature and humidity, high temperature and after a weathering cycle), fatigue strength tests (at room temperature and after a weathering cycle), creep tests (at room temperature and raised temperature and humidity). One joint concept was compared with a similar bolted joint alternative, which is the current practice in shipbuilding.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages44
ISBN (Print)951-38-5159-1
Publication statusPublished - 1997
MoE publication typeD4 Published development or research report or study

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes


  • sandwich structrures
  • joints (junctions)
  • adhesive bonding
  • fiberglass reinforced plastics
  • strength tests
  • composite structures


Dive into the research topics of 'Adhesively bonded joints between FRP sandwich and metal: Different concepts and their strength behaviour'. Together they form a unique fingerprint.

Cite this