Repair of Damage to Marine Sandwich Structures: Part 1 - Static Testing

Abstract

Marine vessels constructed from sandwich panels with glass reinforced polymer (GRP) composite skins and PVC foam core are now common. Such structures will inevitably be subjected to damage and any repair technique needs to ensure that the strength and stiffness of the structure are restored. The current recommended Royal Australian Navy (RAN) techniques for the repair of sandwich structures have been evaluated and deficiencies identified. Static tests conducted under four-point bending indicate that the presence of voids in the bondline seriously affect the strength of the repair. Modified repair techniques are proposed to simplify the repair procedure while improving the repair quality and repeatability. The test results show that the modified techniques overcome the problems associated with the RAN repair techniques.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1998
Accession Number
ADA360620

Entities

People

  • Ivan Grabovac
  • Raoul Luescher
  • Rodney Thomson

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Adhesives
  • Composite Materials
  • Composite Structures
  • Construction
  • Elongation
  • Engineering
  • Engineers
  • Fabrication
  • Failure Mode And Effect Analysis
  • Laminates
  • Maritime Industry
  • Materials Laboratories
  • Mechanical Properties
  • Sandwich Construction
  • Sandwich Panels
  • Standards
  • Static Tests

Fields of Study

  • Engineering

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Surface Coatings Technology.
  • Systems Analysis and Design