Performance improvement by glass fiber of adhesively bonded metal joints at the cryogenic temperature

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The performance of adhesively bonded joints composed of aluminum sheet and stainless steel foils was investigated at the cryogenic temperature for the secondary barrier LNG (Liquefied Natural Gas) containment system. Since the huge adhesive bonding area such as LNG carriers or floaters cannot be surface-treated economically by chemical treatment, new flame surface treatment method for the metal foils was evaluated and compared with other conventional surface treatments such as mechanical or chemical surface treatments at the cryogenic temperature. The surface wettability by contact angle measurement of the metal foil was investigated with respect to surface treatments and environmental aging conditions. The effects of adhesive thickness on the adhesive bond strength and fracture toughness have been also investigated at the cryogenic temperature. The experimental results showed that the bonding performances depended strongly on the surface treatment method, adhesive thickness and fiber reinforcement for the adhesive, such. It was also found that the thick adhesive joint had a reduced bonding strength at the cryogenic temperature, but the glass fiber reinforcement improved much the bonding strength and fracture toughness for thicker adhesive at the cryogenic temperature. (c) 2012 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2013-02
Language
English
Article Type
Article
Keywords

I FRACTURE-TOUGHNESS; TOUGHENED EPOXY; DEFORMATION; BEHAVIOR; FAILURE

Citation

COMPOSITE STRUCTURES, v.96, pp.321 - 331

ISSN
0263-8223
DOI
10.1016/j.compstruct.2012.08.050
URI
http://hdl.handle.net/10203/174577
Appears in Collection
ME-Journal Papers(저널논문)
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