Failure analysis of CF/epoxy hollow beam components using digital image correlation and acoustic emission analyses

Kalteremidou, Kalliopi-Artemi; Murray, B.; Carrella-Payan, Delphine; Cernescu, Anghel; Hemelrijck, Danny Van; Pyl, Lincy

doi:10.1016/j.compstruct.2021.114481

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…Traditional NDT techniques, such as ultrasonics [5,6], acoustic emission [7,8], and thermal imaging [9], primarily focus on detecting material discontinuities, like cracks and defects, to determine the presence of damage within or on the surface of structures. However, these methods have notable limitations, including stringent requirements for the testing environment, restrictions on the size of the structure that can be tested, and high operational costs, rendering them less suitable for marine engineering applications [10].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Damage Localization in GFRP Composite Plates: A Novel Approach Using Feedback Optimization and Multi-Label Classification

Cao,

Liao,

Yan

et al. 2024

Processes

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Damage localization in GFRP (glass-fiber-reinforced polymer) composite plates is a crucial research area in marine engineering. This study introduces a feedback-based damage index (DI) combined with multi-label classification to enhance the accuracy of damage localization and address scenarios involving multiple damages. The research begins with the creation of a modal database for yachts’ GFRP composite plates using finite element modeling (FEM). A method for deriving a feedback-weighted matrix, based on the accuracy of the DI, is then developed. Sensitivity analysis reveals that the feedback DI is 50% more sensitive than the traditional DI, reducing false positives and missed detections. The associated feedback-weighted matrix depends solely on the structural shape, ensuring its transferability. To address the challenge for localizing multiple damages, a multi-label classification approach is proposed. The synergy between the feedback optimization and multi-label classification enables the rapid and precise localization of multiple damages in GFRP composite plates. Modal testing on damaged GFRP plates confirms the enhanced accuracy for combining the feedback DI with multi-label classification for pinpointing damage locations. Compared with traditional methods, this feedback DI method improves sensitivity, while multi-label classification effectively handles multiple damage scenarios, enhancing the overall efficiency of the damage diagnosis. The effectiveness of the proposed methods is validated through experimentation, offering robust theoretical support for composite plate damage diagnostics.

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Section: Introductionmentioning

confidence: 99%

Enhancing Damage Localization in GFRP Composite Plates: A Novel Approach Using Feedback Optimization and Multi-Label Classification

Cao,

Liao,

Yan

et al. 2024

Processes

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“…Due to the fact that AE cannot directly measure the damage mode of materials, it is often combined with other damage assessment methods. In many studies [14,[30][31][32][33][34], the DIC method had been used as another complementary detection method in conjunction with AE detection of material damage, with non-contact methods used to measure the surface strain and deformation fields of objects. Although DIC cannot obtain internal deformation and strain information of materials, it can still provide a reference for evaluating material damage.…”

Section: Introductionmentioning

confidence: 99%

A Study on Damage of T800 Carbon Fiber/Epoxy Composites under In-Plane Shear Using Acoustic Emission and Digital Image Correlation

Lin,

Shi,

Huang

et al. 2023

Polymers

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In addition to measuring the strain, stress, and Young’s modulus of materials through tension and compression, in-plane shear modulus measurement is also an important part of parameter testing of composites. Tensile testing of ±45° composite laminates is an economical and effective method for measuring in-plane shear strength. In this paper, the in-plane shear modulus of T800 carbon fiber/epoxy composites were measured through tensile tests of ±45° composite laminates, and acoustic emission (AE) was used to characterize the damage of laminates under in-plane shear loading. Factor analysis (FA) on acoustic emission parameters was performed and the reconstructed factor scores were clustered to obtain three damage patterns. Finally, the development and evolution of the three damage patterns were characterized based on the cumulative hits of acoustic emission. The maximum bearing capacity of the laminated plate is about 17.54 kN, and the average in-plane shear modulus is 5.42 GPa. The damage modes of laminates under in-plane shear behavior were divided into three types: matrix cracking, delamination and fiber/matrix interface debonding, and fiber fracture. The characteristic parameter analysis of AE showed that the damage energy under in-plane shear is relatively low, mostly below 2000 mV × ms, and the frequency is dispersed between 150–350 kHz.

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“…10,11 Acoustic emission can identify delamination damage of composite materials and the transient elastic wave propagation caused by the sudden release of internal energy of materials. 12,13 Zhang et al 14 Acoustic emission signals of glass fiber/epoxy resin composites can correspond to matrix cracking, fiber/ matrix debonding, and fiber breakage. The characteristic frequency range of each failure mechanism can be determined by cluster analysis.…”

Section: Introductionmentioning

confidence: 99%

Mechanical failure characterization of oxygen plasma modified UHMWPE/vinyl ester composites using acoustic emission

Yan

Chen

et al. 2022

Journal of Industrial Textiles

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This study reveals the mechanical and interfacial bonding properties of glow discharge oxygen plasma modified ultrahigh molecular weight polyethylene (UHMWPE)/vinyl ester composites modified by oxygen plasma. The composites’ flexural, tensile, and impact-resistant properties were estimated, and the failure mechanism was analyzed by acoustic emission (AE) testing. The flexural stress, tensile stress, and impact-resistance force of the modified three plain weave structures composites are 193.37–734%, 11–15%, and 16–17% higher than those without modification. It depends on flexibility, interfacial bonding strength, reinforcement structure, and stiffness. In addition to the flexural properties, the tensile and impact properties increase with fiber volume fraction. In the AE test, the flexural and tensile cumulative energies without modification are 9230.42 mV*mS and 1.735 V*S higher than modified materials. The characteristic frequency range of each failure mechanism is determined by cluster analysis. Low, medium, and high frequency correspond to matrix cracking, fiber/matrix debonding, and fiber breakage. Oxygen plasma contributes to the wettability of the reinforcement and the interfacial bonding strength, resisting cracking growth.

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Failure analysis of CF/epoxy hollow beam components using digital image correlation and acoustic emission analyses

Cited by 10 publications

References 42 publications

Enhancing Damage Localization in GFRP Composite Plates: A Novel Approach Using Feedback Optimization and Multi-Label Classification

Enhancing Damage Localization in GFRP Composite Plates: A Novel Approach Using Feedback Optimization and Multi-Label Classification

A Study on Damage of T800 Carbon Fiber/Epoxy Composites under In-Plane Shear Using Acoustic Emission and Digital Image Correlation

Mechanical failure characterization of oxygen plasma modified UHMWPE/vinyl ester composites using acoustic emission

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