Durability of an adhesively bonded joint between steel ship hull and sandwich superstructure pre-exposed to saline environment
Artikel i vetenskaplig tidskrift, 2023

This paper outlines an experimental investigation into the durability of large-scale adhesively bonded joints with a thick layer of methyl methacrylate adhesive (MMA). Ageing has been performed by immersion in a 3.5 wt% NaCl solution for 10 weeks at 50°C. Two aged and one unaged specimen were subjected to tensile testing, and three aged and one unaged specimen were loaded up to ~ 3.5 million fatigue cycles followed by a residual tensile test. The ductility of the adhesive is affected by ageing and fatigue testing. Despite a decrease in ductility, the plastic zone development was adequate for the required strain redistribution without compromising the joint performance (strength and stiffness) demonstrating the fatigue tolerance of the joint. The shear, longitudinal, and peel strain values in the adhesive bulk are evaluated by digital image correlation. The shear strength values are significantly higher than the requirements following from the design. All specimens failed by sudden delamination of the composite plate. Post-mortem analysis showed no corrosion travel at the interface of steel and adhesive.

marine environment

strain

tensile

damage characterisation

MMA adhesive

fatigue

Författare

Pankaj R. Jaiswal

Universiteit Gent

Rahul Iyer Kumar

Universiteit Gent

Luc Mouton

Bureau Veritas

Linda Starink

Lloyd's Register

Ioannis Katsivalis

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Cedric Verhaeghe

Damen Schelde Naval Shipbuilding

Wim De Waele

Universiteit Gent

Journal of Adhesion

0021-8464 (ISSN) 1563-518X (eISSN)

Vol. 100 11 985-1014

Ämneskategorier

Maskinteknik

Materialteknik

DOI

10.1080/00218464.2023.2282162

Mer information

Senast uppdaterat

2024-08-30