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Publicações
Sutherland, L.S. e Guedes Soares, C. (2016), “Investigating T-joint strength parameters using statistical experimental design and analysis techniques”, Maritime Technology and Engineering 3, Guedes Soares, C. & Santos T. A., (Eds.), Taylor & Francis Group, London, UK, pp. 569-574
The strength of marine type T-joints has been investigated in a large experimental study carried out and analysed using statistical experimental design methods. The full test programme considered effects of surface preparation, adhesive and surface cleaning, with this paper reporting initial findings of the latter two parameters. The statistical experimental design techniques proved invaluable in identifying, presenting and interpreting the interaction between the effects of the parameters. Statistical analyses used the open source ‘R’ and ‘RStudio’ software. The statistical model represented the data very accurately. The interaction between the effects of adhesive and cleaning factors was seen to be significant. The solvent cleaned Crestomer joints were the strongest joints and the dry cloth cleaned Crestomer joints were stronger than all other joints, whether the latter were solvent cleaned or not. The dry cloth cleaned polyester putty joints were the weakest, although the cloth-cleaned Crystic joints were only marginally stronger. The increase in joint strength achieved via cleaning with acetone and styrene monomer was much greater for the Crestomer joints than for the Crystic and polyester putty joints. There was not a great difference between the strengths of the Crystic and the polyester putty bonded joints. Further work concerns the completion of the analysis of the full data set by including the third parameter of surface preparation and of the more complex statistical analyses required.
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