Adhesive bonding of thick steel adherends for marine structures

Hashim, S.A.

doi:10.1016/s0951-8339(99)00029-5

Cited by 37 publications

(13 citation statements)

References 9 publications

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“…Degreasing is a necessary first step in preparing most metals to remove, oils and other potential contaminates. Brushing, ultrasonic or vapor degreasing systems are claimed to be most efficient in removing this surface contamination, especially when sufficient amounts of solvent are used (Hashim, 1999). Contamination may then be removed with the excess solvent, rather than simply redeposited on the surface as the solvent evaporates.…”

Section: Surface Preparationmentioning

confidence: 99%

“…In general, adhesive joints subjected to high humidity, saturation with water or extreme temperatures, will result in a reduction of the joint strength. It is also noted that despite the change in the mechanical properties of the adhesive, the primary mechanisms for strength reduction in bonded steel joints in wet environments is the influence of interfacial attack in displacing the adhesive from the adherend (Hutchinson, 1987 andHashim, 1999). Moisture diffusing through the adhesive layer is energetically attracted to high-energy substrate surfaces, resulting in adsorption of water molecules, thereby displacing secondary bonds between the adhesive and substrate.…”

Section: Durability and Prevention Of Galvanic Corrosionmentioning

confidence: 99%

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Bond Behavior of CFRP Strengthened Steel Structures

Schnerch

Dawood

Rizkalla

et al. 2006

Advances in Structural Engineering

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Recent research has focused on strengthening steel structures using FRP materials. The bond behavior of steel structures strengthened with FRP materials is different than that of concrete structures. Additionally, very high bond stresses are likely to occur for most strengthening applications due to the amount of strengthening required for steel structures. In this paper, surface preparation methods and means of preventing galvanic corrosion are discussed as well as current methods for determining bond stresses and their use for design. These methods are compared to experimental results, showing good agreement, and the direction of future work in this area is proposed.

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Section: Surface Preparationmentioning

confidence: 99%

Section: Durability and Prevention Of Galvanic Corrosionmentioning

confidence: 99%

Bond Behavior of CFRP Strengthened Steel Structures

Schnerch

Dawood

Rizkalla

et al. 2006

Advances in Structural Engineering

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“…From equation (11) and Figure 1, when the displacement z i of node a i on z direction is the transverse displacement of the contact surface bolted-joint impacted from lateral shear force, the load F jz of node a j represents the transverse shear force of whole structure. By solving FE equations, there is where [ K ji ] 3 ( i = 1, 2,…, n ) represents the third line of matrix K ji .…”

Section: Parametric Modeling Approach Of Bolted Joint Structuresmentioning

confidence: 99%

“…Bolted joint is one of important joints among components, 1 which is widely used in many fields just like aerospace engineering, 2 marine engineering, 3 vehicle engineering, 4 and weapons. 5 Under the effect of external loads, the variations of looseness, slipping and even fracture of bolted joints directly influence the reliability and performance of mechanical system.…”

Section: Introductionmentioning

confidence: 99%

Parametric modeling and updating for bolted joints of aeroengine casings

Zhang

Fei

Wang

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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To establish accurate finite element (FE) model of bolted joint structures of aeroengine stator system (casings), this work implements the parametric FE modeling and updating of bolted joints of aeroengine stator system with multi-characteristic responses (multi-object). Firstly, the parametric FE modeling approach of bolted joint structure was developed based on the thin layer element method. And then the FE model updating thought of aeroengine stator system was developed based on the probabilistic analysis method. Finally, the parametric modeling and updating of the bolted joints of aeroengine stator system with multi-characteristic responses was completed by the optimization iteration calculation of objective function based on the proposed methods and the static stiffness testing data. Through the parametric modeling of bolted joint structures based on the thin layer method, the complexity of FE model of aeroengine casings with many bolted joint structures is reduced. As shown in the FE model updating of casings with multi-characteristic responses analysis, the static stiffness from the updated model are very close to the test data, in which the maximum relative error decreases to 3.9% from 30.52% and the others are less than 3%, so that the design precision of aeroengine stator system with the many and wide variety of bolted joints gets a great improvement. Moreover, the proposed methods of parametric modeling and model updating for multi-characteristic responses are validated to be effective in the simulation and equivalent of the mechanical characteristics of bolted joints in complex systems like aeroengine stator system.

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“…However, a chemically active steel surface that is free from contaminants is essential to enhance the chemical bond between the adhesive and the metallic surface. Brushing, ultrasonic, or vapour degreasing systems are claimed to be the most efficient to remove oil and other potential surface contamination, especially when adequate solvents are used [ 59 ]. Contamination may then be removed using the excess solvent, rather than simply redepositing it on the steel surface as the solvent evaporates.…”

Section: Surface Preparation and Treatment For Steel Beam Strengthmentioning

confidence: 99%

A Review on Strengthening Steel Beams Using FRP under Fatigue

Kamruzzaman

Jumaat

Sulong

et al. 2014

The Scientific World Journal

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In recent decades, the application of fibre-reinforced polymer (FRP) composites for strengthening structural elements has become an efficient option to meet the increased cyclic loads or repair due to corrosion or fatigue cracking. Hence, the objective of this study is to explore the existing FRP reinforcing techniques to care for fatigue damaged structural steel elements. This study covers the surface treatment techniques, adhesive curing, and support conditions under cyclic loading including fatigue performance, crack propagation, and failure modes with finite element (FE) simulation of the steel bridge girders and structural elements. FRP strengthening composites delay initial cracking, reduce the crack growth rate, extend the fatigue life, and decrease the stiffness decay with residual deflection. Prestressed carbon fibre-reinforced polymer (CFRP) is the best strengthening option. End anchorage prevents debonding of the CRRP strips at the beam ends by reducing the local interfacial shear and peel stresses. Hybrid-joint, nanoadhesive, and carbon-flex can also be attractive for strengthening systems.

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Adhesive bonding of thick steel adherends for marine structures

Cited by 37 publications

References 9 publications

Bond Behavior of CFRP Strengthened Steel Structures

Bond Behavior of CFRP Strengthened Steel Structures

Parametric modeling and updating for bolted joints of aeroengine casings

A Review on Strengthening Steel Beams Using FRP under Fatigue

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