Failure load prediction of composite bolted joint with clamping force

Choi, Jae Il; Hasheminia, Seyyed Mohammad; Chun, Hye‐Yeong; Park, Jong Chan; Chang, Hong Suk

doi:10.1016/j.compstruct.2018.01.037

Cited by 32 publications

(17 citation statements)

References 21 publications

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“…In bolted joint laminates, high stress concentrations appear near the fastener holes. However, if the substrates are subjected to clamping torque, which causes frictional force between the washers and the composite laminate, the washers share a portion of the external load in the vicinity of the washer area and the friction force releases the concentrated stress surrounding the hole-edge [ 25 ]. The stress is thereby redistributed, which could reduce stress concentrations, resulting in a higher failure load [ 25 ].…”

Section: Clamping Torquementioning

confidence: 99%

“…On the other hand, the negative effect of the clamping force is that out-of-plane stresses can lead to a premature failure of the joint, because the through-the-thickness properties of fibre reinforced composites are very poor and thus the composite is vulnerable to damage and failure in this direction [ 14 , 43 ]. In order to understand the effects of clamping force on a bolted joint, Choi et al used two values of clamping torque: 30 Nm and 50 Nm [ 25 ]. Unidirectional E-glass/epoxy composite and carbon/epoxy composite were used to produce laminates with stacking sequence of ±45°.…”

Section: Clamping Torquementioning

confidence: 99%

“…For the E-glass/epoxy composites, the failure load increased by 16.3% when the clamping torque changed from 30 Nm to 50 Nm. Similarly, the failure load for the carbon/epoxy composite increased by 14% for the same increase of the clamping torque [ 25 ]. Park investigated the influence of the clamping force on the bearing strength of bolted joint in carbon/epoxy quasi-isotropic composite [ 44 ].…”

Section: Clamping Torquementioning

confidence: 99%

“…Therefore, the bolted joints are still used despite several drawbacks of this joining method in composite materials. The drawbacks of the bolted joining are: the stress concentrations caused by the fastener hole, the disruption of the fibre continuity during drilling, which severely reduces the load carrying capacity [ 24 , 25 , 26 ], undesirable damages (such as delamination, fibre pull-out, and microbuckling [ 26 ]) induced by drilling the holes which drastically reduce strength against fatigue, thus degrading the long-term performance of composite laminates [ 27 ]. …”

Section: Introductionmentioning

confidence: 99%

“…the disruption of the fibre continuity during drilling, which severely reduces the load carrying capacity [ 24 , 25 , 26 ],…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Mechanical Joining of Fibre Reinforced Polymer Composites to Metals—A Review. Part I: Bolted Joining

Galińska

2020

Polymers

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As the fibre reinforced plastic composites gain larger and larger share in industry, the problem of joining them with metal elements becomes significant. The current paper is the first part of the literature review, which gathers and evaluates knowledge about methods suitable for mechanical joining of composite and metal elements. This paper concerns bolted joining, because this method of mechanical joining is widely used for joining composite materials. The paper describes failure modes of bolted joints in composite materials, the influence of the bolt clamping torque, the clearance between the bolt and the hole and aging on the performance of the joint, drilling techniques used in composite materials in order to minimize damages, different fastener types, inspection techniques, and finally, the techniques that have been developed in order to improve the strength of the bolted joints in composites. Since the hole drilled in a composite material in order to perform bolted joining is a weak point of the structure, those techniques: bonded inserts, titanium foil internal inserts, fibre steering, additional reinforcement, and moulded holes, mainly aim to improve the strength of the hole in the composite. The techniques have been discussed in details and compared with each other in the summary section.

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Section: Clamping Torquementioning

confidence: 99%

Section: Clamping Torquementioning

confidence: 99%

Section: Clamping Torquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…the disruption of the fibre continuity during drilling, which severely reduces the load carrying capacity [ 24 , 25 , 26 ],…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mechanical Joining of Fibre Reinforced Polymer Composites to Metals—A Review. Part I: Bolted Joining

Galińska

2020

Polymers

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Polydopamine as a Materials Platform to Promote Strong and Durable Interfaces in Thermoplastic Polymer‐Titanium Joints

Kafkopoulos,

Duvigneau,

Vancso

2024

Macro Materials & Eng

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Joining thermoplastic polymers (TPMs) and metals to form lightweight hybrid structures is of growing industrial and commercial importance. The performance of such materials relies on the bonding strength and endurance of the formed TPM–metal interfaces. The available joining technologies and the mechanisms that govern interfacial adhesion are reviewed in this contribution, highlighting thermal bonding as a commercially attractive joining method. By focusing on molecular interactions to optimize interfacial adhesion, the use of dopamine as a building block to form polydopamine (PDA) based adhesive interlayers in such interfaces is discussed. This work also highlights the potential of PDA to be applied as a load‐bearing adhesive—a notion considered to date unfeasible.

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Measures for Soft Target Protection Inspired in Other Blast Vulnerable Structures

Čekerevac

Rigueiro

Pereira

2020

NATO Science for Peace and Security Series C: Environmental Security

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Failure load prediction of composite bolted joint with clamping force

Cited by 32 publications

References 21 publications

Mechanical Joining of Fibre Reinforced Polymer Composites to Metals—A Review. Part I: Bolted Joining

Mechanical Joining of Fibre Reinforced Polymer Composites to Metals—A Review. Part I: Bolted Joining

Polydopamine as a Materials Platform to Promote Strong and Durable Interfaces in Thermoplastic Polymer‐Titanium Joints

Measures for Soft Target Protection Inspired in Other Blast Vulnerable Structures

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