Tension-after-impact analysis and damage mechanism evaluation in laminated composites using AE monitoring

Hoseinlaghab, Sadegh; Farahani, Mohammad Reza; Safarabadi, Majid; Nikkhah, Majid

doi:10.1016/j.ymssp.2022.109844

Cited by 27 publications

(9 citation statements)

References 54 publications

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“…S. Hoseinlaghab et al investigated the effects of various nanoparticles (NPs) on the TAI strength of glass fiber-reinforced polymer (GFRP) composites, finding that NPs had enhanced the impact strength of the GFRPs by up to 66% reduction in damage index and increased TAI strength by up to 39%. 26 A finite element model to compute the low energy impact response and impact damage under tension preloading was examined in. 27 Despite the significant experimental evidence available for the TAI test of GFRP, there is a lack of data on the TAI response specifically for z-pin reinforced curvature CFRP laminates.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to the effort dedicated over the past decades to the effect of z‐pinning on the laminates under impact and CAI testing, limited works have been done to investigate the effectiveness of z‐pins in the TAI response of laminates. S. Hoseinlaghab et al investigated the effects of various nanoparticles (NPs) on the TAI strength of glass fiber‐reinforced polymer (GFRP) composites, finding that NPs had enhanced the impact strength of the GFRPs by up to 66% reduction in damage index and increased TAI strength by up to 39% 26 . A finite element model to compute the low energy impact response and impact damage under tension preloading was examined in 27 .…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigations into damage mechanism in the low‐velocity impact and tension‐after‐impact testing of z‐pin reinforced curved CFRP composite

Liu,

Sang,

Jin

et al. 2024

Polymer Composites

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This paper studies the influence of z‐pins on the impact resistance and residual tensile properties of composite large curvature components through low‐velocity impact and tension‐after‐impact tests to explore the damage mechanism. Unpinned and z‐pinned specimens with different diameters (0.3 and 0.5 mm) and spacing (3, 4, and 5 mm) were impacted at energies of 28 J and 14 J + 14 J and were stretched until failure. The theoretical models were used to predict impact dent depth and tensile strength, and the effectiveness of z‐pins and damage patterns were characterized by force‐time/displacement curves and through visual observation. The agreement between the experiments and predictions can thus validate the presented approach. Through the low‐velocity impact test, it is found that z‐pins with higher density and smaller diameter make the impact dent shallower and the surface damage less, thus showing better performance. Later, the impacted specimens mainly show delamination, explosion, breakage, and splitting after tension. During the first stage of the force‐displacement curves, since z‐pins mitigate the delamination, tensile strength shows a 29.58%–59.17% increase while in the third stage, a decrease of 3.95%–15.12% occurs due to initial damage caused by z‐pins.Highlights Different impact energies are implemented on large curved CFRP laminates of z‐pins with different diameters and spacing to explore the damage mechanism. Low‐velocity impact and tension‐after‐impact (TAI) tests are used to simulate the centrifugal force of the blade subjected to impact and rotation after impact. Z‐pinned group with a small diameter and high density causes less damage and tensile strength in the first stage increases while decreasing in the third stage compared with the unpinned group.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental investigations into damage mechanism in the low‐velocity impact and tension‐after‐impact testing of z‐pin reinforced curved CFRP composite

Liu,

Sang,

Jin

et al. 2024

Polymer Composites

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“…This is because of the fact that a single feature cannot fully discriminate different damages. 12 Hoseinlaghab et al 13 identified four damage mechanisms of matrix cracking, fiber-matrix debonding, fiber breakage, and fiber pull-out in GFRP composites subjected to tension-after-impact loading conditions using analysis of AE data with wavelet transform method.…”

Section: Introductionmentioning

confidence: 99%

Impact damage assessment in laminated composites using acoustic emission and finite element methods

Saeedifar

2023

Polymer Composites

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This study aims to quantify impact damage in laminated composites using acoustic emission (AE) and to verify the AE results with finite element (FE) method. Carbon fiber reinforced polymer (CFRP) composite specimens were subjected to quasi‐static out‐of‐plane indentation loading. A procedure, including feature extraction, feature selection, data dimensionality reduction, and data clustering using an evolutionary algorithm, that is, differential evolution (DE) optimization algorithm, was proposed to identify and quantify different damage mechanisms using AE. The AE results showed that the dominant damages were matrix cracking and delamination. For the quantitative evaluation of the AE results, the indentation test was simulated using the FE method. A FE model based on cohesive zone modeling and continuum damage mechanics was implemented to predict interlaminar and intralaminar damages. The quantity of the damaged elements associated with the matrix cracking and delamination was consistent with the AE results. This study showed the applicability of the AE for impact damage identification and quantification in composite structures.Highlights Indentation damage in CFRP is experimentally quantified using the AE method. The DE algorithm is used to cluster the AE data. CZM and CDM are used to numerically model the damage. The AE clustering results are compared with the numerical results.

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“…In order to evaluate the damage progression of carbon fiber-reinforced composites that also have multiwalled carbon nanotubes, graphene, and cellulose nanofibers embedded in them, Zhou et al 28 conducted a tensile test utilizing the AE approach. When laminated composite specimens were exposed to low-velocity impact (LVI), Hoseinlaghab et al 29 investigated the identification of main damage processes using the AE approach. By categorizing the peak frequencies of the signals that were acquired during mechanical testing of pure epoxy and dry fibers, they identified four main damage pathways.…”

Section: Introductionmentioning

confidence: 99%

Damage evolution of polymer matrix composites reinforced by nanoparticles modified under the three-point bending test by acoustic emission methods

Shayanfar,

Nikkhah,

Saber-Samandari

et al. 2023

Journal of Composite Materials

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This study aimed to investigate the behavior, and failure resistance of composite materials, and the effect of nanoparticles on their flexural properties. Nanoparticles with different weight percentages of nano-clay, and nano-silica were added to a plain weave C-glass fabric/epoxy/nano SiO2/nano-clay hybrid composite to analyze their effect. A three-point bending test was used to determine the findings. Initially, nano-clay and nano-silica were dispersed into epoxy resin at loadings of 0, 1, 3, and 5 weight percent for all hybrid composites using ultrasonic and mechanical stirring techniques. The test results show that the addition of both these nanoparticles up to 1 wt.% improved flexural strength, and flexural modulus by 12% and 26%, for nano-clay, 13% and 29%, for nano-silica, respectively. Then, during three-point bending tests, acoustic emission (AE) technique was used to detect damage mechanisms. Afterward, to classify damage mechanisms using AE features (peak amplitude and frequency), Gaussian Mixture Model (GMM) was used. Additionally, the evolution of damages in samples containing and without nanoparticles was investigated and studied using cumulative AE energy. The results show that the samples containing nanoparticles were more resistant to the growth of monotonous damage than those without nanoparticles.

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Tension-after-impact analysis and damage mechanism evaluation in laminated composites using AE monitoring

Cited by 27 publications

References 54 publications

Experimental investigations into damage mechanism in the low‐velocity impact and tension‐after‐impact testing of z‐pin reinforced curved CFRP composite

Experimental investigations into damage mechanism in the low‐velocity impact and tension‐after‐impact testing of z‐pin reinforced curved CFRP composite

Impact damage assessment in laminated composites using acoustic emission and finite element methods

Damage evolution of polymer matrix composites reinforced by nanoparticles modified under the three-point bending test by acoustic emission methods

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