Mode I and Mode II interlaminar fracture toughness of CFRP/magnesium alloys hybrid laminates

Pan, Yingcai; Wu, Guoqing; Cheng, Xu; Zhang, Zongke; Li, Maoyuan; Ji, Sudong; Zheng, Hui

doi:10.1080/09276440.2016.1144911

Cited by 37 publications

(10 citation statements)

References 24 publications

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“…After an initial load decrease, the occurrence of crack propagation is associated with a general trend of decreasing load. The fluctuation of load after an initial drop is associated with uneven crack propagation, caused by stress concentration build-up and release at the crack tip [ 33 ]. Based on experimental results, the increasing temperature has minimal effects on the slope from 30 to 70 °C, similar to findings by Davidson et al [ 20 ].…”

Section: Numerical Results and Analysismentioning

confidence: 99%

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

et al. 2021

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This paper aims to propose a temperature-dependent cohesive model to predict the delamination of dissimilar metal–composite material hybrid under Mode-I and Mode-II delamination. Commercial nonlinear finite element (FE) code LS-DYNA was used to simulate the material and cohesive model of hybrid aluminium–glass fibre-reinforced polymer (GFRP) laminate. For an accurate representation of the Mode-I and Mode-II delamination between aluminium and GFRP laminates, cohesive zone modelling with bilinear traction separation law was implemented. Cohesive zone properties at different temperatures were obtained by applying trends of experimental results from double cantilever beam and end notched flexural tests. Results from experimental tests were compared with simulation results at 30, 70 and 110 °C to verify the validity of the model. Mode-I and Mode-II FE models compared to experimental tests show a good correlation of 5.73% and 7.26% discrepancy, respectively. Crack front stress distribution at 30 °C is characterised by a smooth gradual decrease in Mode-I stress from the centre to the edge of the specimen. At 70 °C, the entire crack front reaches the maximum Mode-I stress with the exception of much lower stress build-up at the specimen’s edge. On the other hand, the Mode-II stress increases progressively from the centre to the edge at 30 °C. At 70 °C, uniform low stress is built up along the crack front with the exception of significantly higher stress concentrated only at the free edge. At 110 °C, the stress distribution for both modes transforms back to the similar profile, as observed in the 30 °C case.

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Section: Numerical Results and Analysismentioning

confidence: 99%

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

et al. 2021

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“…The dimension of the beam is taken as per the reference standards i.e., 130x15x2.36 mm with the pre-crack length of 45mm as shown in Figure 3. In both the models cohesive layer is modeled in the mid plane as shown in the Figure 3 and Figure 4 with the mode I, mode II fracture energies 0.23 KJ/m 2 and 5.81KJ/m 2 respectively [23]. The properties of constituent layers are presented in Table .1.…”

Section: Geometrical Modelling Of Az31magnesium Alloy-based Fibre Met...mentioning

confidence: 99%

Numerical Studies on Mode I Delamination and its Effect on the Vibrational Characteristics in Fibre Metal Laminates

Kali

Korla

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Fibre metal laminates (FMLs) afford the notable advances over ongoing composite materials for aerospace and automotive applications due to their low weight and outstanding mechanical properties. Nevertheless, FMLs are prone to damages during manufacturing and loading conditions. Double cantilever beam (DCB) and vibration test are the commonly used tools to assess fracture energy values and the level of damage influence on the material properties respectively. Therefore, this paper aims at correlating the numerical validation of mode I delamination with already published experimental data by Y.Pan et.al and study the influence of delamination under free vibration analysis of Magnesium (Mg AZ31) alloy based fibre metal laminates. For the presented model, the numerical values showed good acceptance with the experimental values of DCB test. It was also further observed that there is significant reduction in natural frequency due to delamination in the fibre metal laminates.

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“…1,4 Interlaminar fracture failure is the main failure mode of FMLs. 1,5 The development of approaches to improve the interlaminar performance of FMLs has received extensive research attention. Metal surface treatment improves the performance of the metal/resin interface, thereby enhancing the interlaminar fracture toughness of FMLs.…”

Section: Introductionmentioning

confidence: 99%

Hybrid effect of carbon nano‐fillers on the interlaminar fracture toughness of fiber metal laminates

Wang

Cong

et al. 2021

Polymer Composites

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Interlaminar fracture failure is the dominant factor restricting the development and application of fiber metal laminates (FMLs). In the current work, the primary purpose is an assessment of the effect of the hybrid combination of graphenes (GNPs) and multiwalled carbon nanotubes (MWCNTs) on the interlaminar performance of FMLs. The effect of different ratios (GNPs: MWCNTs = 1:1, 3:7, 7:3) of hybrid carbon nano-fillers on the mode I and mode II interlaminar fracture strain energy release rates (G ΙC and G ΙΙC ) of FMLs containing GNPs and MWCNTs hybrid modified epoxy matrices are studied via double cantilever beam and end notched flexure tests. Results indicate that different ratios of GNPs and MWCNTs have different effects on the mode I and mode II interlaminar fracture performance of the samples. Compared with that of the baseline material, the G ΙC of hybrid modified FMLs with GNPs: MWCNTs = 7:3 is increased by 344%. By contrast, the G ΙΙC of hybrid modified FMLs with GNPs: MWCNTs = 3:7 is increased by 82.9% relative to the baseline value. Scanning electron microscopy of the fracture surface reveals the synergistic toughening mechanism of the two hybrids.

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Mode I and Mode II interlaminar fracture toughness of CFRP/magnesium alloys hybrid laminates

Abstract: 2016) Mode I and Mode II interlaminar fracture toughness of CFRP/magnesium alloys hybrid laminates, Composite Interfaces, 23:5, 453-465,

Cited by 37 publications

References 24 publications

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

Numerical Studies on Mode I Delamination and its Effect on the Vibrational Characteristics in Fibre Metal Laminates

Hybrid effect of carbon nano‐fillers on the interlaminar fracture toughness of fiber metal laminates

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