Characterization of The Damage Mechanism of Glass/Epoxy Composite Tubes Under Quasi-Static Axial Loading Using Acoustic Emission Monitoring

Alimirzaei, Sajad; Najafabadi, Mehdi Ahmadi; Khodaei, A

doi:10.1007/s10443-022-10049-w

Cited by 9 publications

(6 citation statements)

References 56 publications

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“…mean crushing force (F mean ¼EA/d), and crushing force efficiency (CFE¼ F mean /PCF) are some of these parameters [38,39] used for this purpose. In these relations, F(x), d, m, and A show the instantaneous crushing force, crushing distance, mass, and crosssectional area, respectively.…”

Section: Crashworthiness Indicatorsmentioning

confidence: 99%

Investigation of energy absorption capacity of 3D filament wound composite tubes: experimental evaluation, numerical simulation, and acoustic emission monitoring

Alimirzaei

Najafabadi

Nikbakht

et al. 2023

Mechanics of Advanced Materials and Structures

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By analyzing the failure mechanisms, crashworthiness characteristics of FW composite tubes subjected to two modes of progressive damage and catastrophic failure are investigated using acoustic emission technique and numerical method. The AE signals of ±45 composite tubes were classified using hierarchical and wavelet transform methods, and based on the realistic and threedimensional geometrical architecture of tubular structures, the microstructural finite element model was developed using Catia and ABAQUS software. Then deformation patterns and the impression of each mechanism on the crashworthiness characteristics were assessed. Results indicated that fiber breakage and fiber/matrix debonding could likely control the higher percentage of damage. By changing the type of modes from progressive damage to catastrophic failure, the percentage of matrix cracking increases, the fiber/matrix separation decreases, and the failure behavior become dominated by local buckling. Comparing the FE simulation with experimental results, we found the proposed 3D model can reasonably predict the pre-crushing, post-crushing, and material densification.

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Section: Crashworthiness Indicatorsmentioning

confidence: 99%

Investigation of energy absorption capacity of 3D filament wound composite tubes: experimental evaluation, numerical simulation, and acoustic emission monitoring

Alimirzaei

Najafabadi

Nikbakht

et al. 2023

Mechanics of Advanced Materials and Structures

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“…Several non-destructive testing (NDT) methods were used to evaluate the crack and defects status of composites. 15,16 These approaches include acoustic emission (AE) testing, 17 ultrasonic testing, 18 X-ray radiography, 19 flash thermography, 20 and eddy-current testing. 21 Detecting the sudden release of strain energy caused by the induced damage in laminated composites is an efficient passive non-destructive method for monitoring structural health.…”

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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“…14 The advantages of using this method for composite failure inspection include the ability to monitor composite samples in real time and to distinguish between various types of failure, such as matrix cracking, fiber breakage, fiber-matrix debonding, and delamination. [15][16][17][18] Refahi et al 19,20 studied interlaminar fracture toughness in polyester/glass laminates under Mode I loading using AE method. The results showed, there is a linear correlation between AE energy and mechanical energy.…”

Section: Introductionmentioning

confidence: 99%

Investigation of crack propagation in filament wound composite samples of Mode-I by using acoustic emission technique

Farajpour,

Najafabadi

2023

Journal of Composite Materials

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A common industrial method of fabricating composite structural is filament winding, which is widely used to manufacture axisymmetric components. One of the most prevalent damage mechanisms in these composite structures is delamination, which occurs in various types of loading. In this research, the mechanical behavior and propagation of the initial crack of Mode-I in carbon/epoxy filament wound (FW) composite curve beams have been investigated via the acoustic emission (AE) method. For this purpose, at first, a composite tube was made with considering the artificial interlayer separation, and the beam specimens were cut from the longitudinal direction. At first, the initiation of the failures was determined using the AE method. Then, the growth and spread of interlayer delamination were investigated by the energy of AE signals and the sentry function. By determining the speed of the AE waves and providing a method to filter unwanted signals, the momentary position of the interlayer delamination tip during growth is predicted. The results showed that the fiber bridging phenomenon was due to the penetration of the two regions adjacent of the separation interface, and the fiber bridging length considerably affected the Mode-I delamination fracture toughness. In addition, the fracture toughness increased as the fiber bridging zone enlarged. Finally, good agreement was observed between the fracture toughness values obtained from the AE method and those found in the standard ASTM D5528.

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Characterization of The Damage Mechanism of Glass/Epoxy Composite Tubes Under Quasi-Static Axial Loading Using Acoustic Emission Monitoring

Cited by 9 publications

References 56 publications

Investigation of energy absorption capacity of 3D filament wound composite tubes: experimental evaluation, numerical simulation, and acoustic emission monitoring

Investigation of energy absorption capacity of 3D filament wound composite tubes: experimental evaluation, numerical simulation, and acoustic emission monitoring

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

Investigation of crack propagation in filament wound composite samples of Mode-I by using acoustic emission technique

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