Investigation of the dynamic characteristics of a carbon-fiber-reinforced epoxy with adhesive-jointed structure

Basri, Ahmad Burhani Ahmad; Chae, Dong Wook; Lee, Hyeongill

doi:10.1016/j.compstruct.2020.112499

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…These fillers are often used because they are able to influence many physical and mechanical properties due to their structure and various surface modifications. Frequently investigated fillers are titanium dioxide [28], graphene oxide [29,30], carbon nanotubes [31,32], nanoclay [33], carbon fibres [34], etc. or even combinations thereof.…”

Section: Definition Of Materialsmentioning

confidence: 99%

Simplified Testing of the Bond Strength of Adhesives Used for Bonded Anchors

et al. 2021

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The analysis presented in this paper is focused on problems of bond strength as an overall bond quality parameter of industrial adhesives for structural anchoring. In the first part, the problem of bond strength as the most important parameter influencing the final anchor resistance to tension load is described. Further in the text, a new methodology of simplified testing of the strength parameters of adhesives is described. Special test specimens made from steel are repeatedly used in this methodology. Additionally, results of these tests on some new recipes for adhesive are presented. Especially, epoxy resins with special fillers, such as carbon fibres, carbon nanotubes or graphene, were tested. The use of these adhesives in temperatures close to zero degrees Celsius was also tested.

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Section: Definition Of Materialsmentioning

confidence: 99%

Simplified Testing of the Bond Strength of Adhesives Used for Bonded Anchors

et al. 2021

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“…Then, both structures—the hat and plate—were first tested and updated separately before the updating of the assembled structure. Details of the work have been explained in Ahmad Basri et al (2020). Eight plies of the carbon fiber were modeled together as a single shell layer in the FE with the updated material properties of the hat and plate are presented in Table 1.…”

Section: Fe Analysis Of the Assembled Composite Structurementioning

confidence: 99%

“…Figure 3 shows the adhesive connector element used herein named ADHSV, and it is used in representing the adhesive joint model which was first investigated in a previous study by the authors (Ahmad Basri et al, 2020). The same adhesive connector element was used in this study for MU.…”

Section: Fe Analysis Of the Assembled Composite Structurementioning

confidence: 99%

“…Generally, the body-in-white (BIW) of a car consists of hundreds of substructures, and one of the major assembly media is the structural adhesive. Because adhesive joints strongly influence the dynamic characteristics and integrity of an assembled structure (Ahmad Basri et al, 2020), a reliable joint model should be used in the finite element (FE) model of the structure to ensure the accuracy of any subsequent analysis.…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study, Ahmad Basri et al (2020) investigated adhesive joints. In particular, the study pertained to adhesive modeling.…”

Section: Introductionmentioning

confidence: 99%

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Finite element model updating of composite with adhesive jointed structure under built-up internal stress

Basri

Chae

Lee

2021

Journal of Vibration and Control

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Highly complex engineering structures such as the body-in-white of a car consist of hundreds of different parts that are assembled using various types of joints such as welded and adhesive joints. The finite element method has been used extensively in various engineering fields to predict and analyze the dynamic behavior of assembled structures. However, despite the use of well-characterized individual subcomponent models, the predicted results frequently differ from measured results. This is believed to be because of the invalid assumptions of the joint model such as the material properties and other uncertainties associated with the assembly. This study investigated the use of a model updating method (MSC Nastran SOL 200) to identify the invalid assumptions and uncertainties in adhesive jointed composite structures and to minimize the difference between predicted and measured results. Results revealed that the stresses built-up in a structure during the assembly process are permanently retained in the structure after the adhesive is completely cured and that they cause a local stress stiffening effect, which is believed to affect the resonance frequencies of the structure. Introducing the effect of the stresses as an updating parameter in the model updating process increases the prediction accuracy.

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Strain rate‐dependent deformation behaviors of multi‐layer carbon fiber reinforced polymer laminates

Yang

et al. 2021

J of Applied Polymer Sci

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This paper focuses on the contributions of diversities of strain rate and orientations for aggravating the diversities of micro failure behaviors on carbon fiber reinforced polymer (CFRP) laminates. A miniature horizontal type tensile tester is employed to conduct experiments with strain rate ranging from 2.6 × 10−6 s−1 to 2.6 × 10−3 s−1. The CFRP laminates are obtained based upon a thermoset toughened epoxy matrix (termed CF/Epoxy) with ply orientations of (0°/0°) and (0°/90°). Significant differences in deformation behaviors of CFRP laminates are determined through tests. The study clearly reveals the strain rate‐dependent deformation modes of CFRP laminates, involving pure fiber fracture, epoxy crack with stepped surface and interface failure with residual voids, determines the “low‐high‐low” variation tendency of Young's modulus and strength as a function of strain rate. Ply orientation‐dependent differences in deformation behaviors are also investigated via severe interfacial shearing effect. A unified model consisted of four deformation modes to is clarified to analyze the complexity of CFRP laminates failure mechanism.

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Investigation of the dynamic characteristics of a carbon-fiber-reinforced epoxy with adhesive-jointed structure

Cited by 9 publications

References 25 publications

Simplified Testing of the Bond Strength of Adhesives Used for Bonded Anchors

Simplified Testing of the Bond Strength of Adhesives Used for Bonded Anchors

Finite element model updating of composite with adhesive jointed structure under built-up internal stress

Strain rate‐dependent deformation behaviors of multi‐layer carbon fiber reinforced polymer laminates

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