Print Email Facebook Twitter Investigation of the Application of adhesively bonded lifting lugs in ship building Title Investigation of the Application of adhesively bonded lifting lugs in ship building Author Sun, J. Contributor Pruijn, J.F.J. (mentor) Faculty Mechanical, Maritime and Materials Engineering Department Marine and Transport Technology Date 2017-01-31 Abstract Defects are produced when lifting lugs being welded on ship sections during the building process. The large amount of heat produced in the welding work causes “heat affected zone” in the base metal on sections and destroys painted coatings on the plates; and residual stress decreases the mechanical performance of the steel plates. To eliminate the defects, it is hypothesized that “structural adhesive bonding” can replace welding for installing lifting lugs to some extent. An investigation of the application of adhesively bonded lifting lugs in ship building is processed to give methods for the application and check the feasibility of replacing welded lifting lugs with adhesively bonded lifting lugs. In the research, a serious of rules for adhesively bonded lifting lugs is adapted from rules for welded lifting lugs; “structural adhesives”, “adhesive bonding joints”, “the shape and geometry of lifting lugs” and “positions for installation” are investigated. Then adhesively bonded lifting lugs are designed based on the adapted rules; and then improved after the evaluation by FEM simulation. The results show that adhesively bonded lifting lugs can replace welding lifting lugs with high probability when the capacity is less than 20ton; when the capacity is between 20ton and 30ton, limitations such as “not enough bonding area” and “no positions for installation” constrain the replacement. When the capacity of a lifting lug is above 30ton, adhesively bonded lifting lugs cannot replace welded lifting lugs. Subject ship buildinglifting lugsstructural adhesiveadhesive bonding To reference this document use: http://resolver.tudelft.nl/uuid:70c3126b-776f-4ec4-9e14-a739b985c929 Part of collection Student theses Document type master thesis Rights (c) 2017 Sun, J. Files PDF Application of adhesively ... 355784.pdf 2.99 MB Close viewer /islandora/object/uuid:70c3126b-776f-4ec4-9e14-a739b985c929/datastream/OBJ/view