Failure mode and strength of uni-directional composite single lap bonded joints with different bonding methods

Kim, Kwangsoo; Yoo, J.S.; Yi, Yuan Fu; Kim, Chun-Gon

doi:10.1016/j.compstruct.2005.01.023

Cited by 163 publications

(61 citation statements)

References 15 publications

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“…On the other hand, joints prepared by simply cleaning the substrates with acetone displayed a reduction of the peak load of 12% compared to substrates prepared by abrading with P150. These results are in accordance with Kim et al 24 Three replications were tested for each treatment. For these reasons, all the surfaces of the specimens used in the experiments were prepared using the grit P150.…”

Section: Methodssupporting

confidence: 80%

Iron-based reversible adhesives: Effect of particles size on mechanical properties

Ciardiello

Martorana

Lambertini

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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A hot melt adhesive -mainly used for bonding plastic component in automotive field -was modified with different ironbased particles to give it a reversible behaviour. Mechanical and physical properties of these reversible adhesives were experimentally assessed in the work. The modified adhesives, coupled with electromagnetic induction, are able to guarantee separation of the joints without any damage to the substrates for recycling, reuse or repairing of components. Single lap joint specimens were prepared using epoxy/glass fibres substrates and tests were carried out on neat and modified adhesive with 5% weight of iron and iron oxide. Three different Fe particles size were tested: 450 mm, 60 mm and 1-6 mm. The particles size of iron oxide was 50 nm. Separation was studied using single lap joint specimens under electro-magnetic induction. Experimental results showed that the maximum peak load decreases when the average particles sizes increase. The peak loads of the smallest particles were equal to the ones of the pristine adhesive. The elongation of the adhesives increases when the adhesive is modified with both iron and iron oxide particles. Finally, experimental tests on single lap joints coupled with electro-magnetic induction showed that separation of the substrates is possible using iron oxide particles. Electro-magnetic tests conducted on particles alone, helped to understand that bigger particles are able to overcome the melting temperature of the adhesive but hot-melt adhesives modified with these particles are not able to reach the melting. These tests showed that the number of particles into the adhesive matrix is very important for this kind of tests.

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Section: Methodssupporting

confidence: 80%

Iron-based reversible adhesives: Effect of particles size on mechanical properties

Ciardiello

Martorana

Lambertini

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…As shown in Figure 12, the apparent shear strengths of M24 welded GF/PPS without fillet, with fillets bonded with flat substrate edges, and with fillets bonded with ragged substrate edges were 13.10 MPa, 17.87 MPa, and 24.45 MPa respectively (with coefficients of variation CV of 4.2%, 17%, and 11%, respectively). The fillets resulted in a strength increase of 36.45% for flat-edge substrate samples and 86.6% for ragged-edge substrate samples, which were much bigger than the typical 12-20% increase of fillet effect for adhesively bonded composites [16,17]. Joints having fillets bonded with ragged substrate edges broke at the interface between fillet and substrate, which indicates that the bond quality between the fillet and substrate was poor.…”

Section: B Effect Of Resin Filletmentioning

confidence: 96%

An investigation on the strain distribution of resistance welded thermoplastic composite joints

Shi¹,

Fernandez-Villegas²,

Bersee³

2012

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

4
1
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0

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In order to better understand the usefulness of single lap shear testing for the characterization of resistance welded thermoplastic composite joints, finite element method (FEM) and digital image correlation measurements (DIC) were combined to investigate the strain distributions of the joints during testing. Glass fibre reinforced Polyphenylene Sulfide (GF/PPS) was resistance welded in aid of a metal mesh. Shear and peel strain distributions were investigated at the joint overlap area. The effect of the resin fillet and metal mesh on the strain distributions and apparent shear strengths was investigated. A comparison between resistance welded and adhesively bonded GF/PPS joints was performed.

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“…Many researchers experimentally investigated the influences of various parameters on the failure behaviours on composite bonded joints [65][66][67][68][69][70][71][72][73][74][75][76]. In these studies, the typical bonding parameters are surface conditions (e.g.…”

Section: Failure Modesmentioning
confidence: 99%

Adhesively bonded joints in composite materials: An overview
Banea
¹
,
Silva
²

2009
Proceedings of the Institution of Mechanical Engineers, Part L:
422
1
328
0
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A review of the investigations that have been made on adhesively bonded joints of fibre-reinforced plastic (FRP) composite structures (single skin and sandwich construction) is presented. The effects of surface preparation, joint configuration, adhesive properties, and environmental factors on the joint behaviour are described briefly for adhesively bonded FRP composite structures. The analytical and numerical methods of stress analysis required before failure prediction are discussed. The numerical approaches cover both linear and non-linear models. Several methods that have been used to predict failure in bonded joints are described. There is no general agreement about the method that should be used to predict failure since the failure strength and modes are different according to the various bonding methods and parameters, but progressive damage models are quite promising since important aspects of the joint behaviour can be modelled by using this approach. However, a lack of reliable failure criteria still exists, limiting in this way a more widespread application of adhesively bonded joints in principal load-bearing structural applications. An accurate strength prediction of the adhesively bonded joints is essential to decrease the amount of expensive testing at the design stage.

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Failure mode and strength of uni-directional composite single lap bonded joints with different bonding methods

Cited by 163 publications

References 15 publications

Iron-based reversible adhesives: Effect of particles size on mechanical properties

Iron-based reversible adhesives: Effect of particles size on mechanical properties

An investigation on the strain distribution of resistance welded thermoplastic composite joints

Adhesively bonded joints in composite materials: An overview

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