Characterization of failure mechanism in glass, carbon and their hybrid composite laminates in epoxy resin by acoustic emission monitoring

C, Suresh Kumar; Kannivel, Saravanakumar; Arumugam, Vellayaraj

doi:10.1080/10589759.2019.1590829

Cited by 28 publications

(8 citation statements)

References 25 publications

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“…There are also some studies on damage characterization of hybrid composite materials using the AE technique [35][36][37], showing the potential of this technique for hybrid configurations. Suresh Kumar et al [38] used AE amplitude, duration, counts, energy, rise angle (RA) and peak frequency for characterizing failure modes in hybrid composite laminates. The amount of indentation-induced damage was evaluated in different configurations of carbon, basalt and glass fibres using Sentry function (SF) and Felicity ratio (FR) and RA [39].…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission based investigation on the effect of temperature and hybridization on drop weight impact and post-impact residual strength of hemp and basalt fibres reinforced polymer composite laminates

Kumar

Fotouhi

Saeedifar

et al. 2019

Composites Part B: Engineering

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This paper investigates the effect of temperature and hybridization on the impact damage evolution and post-impact residual strength of hemp/epoxy, basalt/epoxy and their hybrid laminates, using mechanical and acoustic emission (AE) based analysis. To start with, the specimens were impacted by a drop weight impact tower machine at two temperatures of 30˚C and 65˚C and then they were subjected to a three-point bending test for the assessment of their residual strength, while online AE signals were recorded during the test. The mechanical behavior of the laminates was evaluated through measurement of the impact force and absorbed energy. AE response of the slope of cumulative rise angle (RA) was used for identification of the severity of the impact-induced damage in the laminates. In addition, the sentry function was computed on the basis of the correlation between the mechanical strain energy stored in the materials and the acoustic energy propagates by fracture events, enabled evaluation of the amount of impact-induced damage. These results showed the hybridized laminates having a better resistance to impact damage at the elevated temperature (65 o C) compared with the nonhybridized laminates, whereas, in the case of the ambient temperature (30 o C), basalt/epoxy laminates had a higher impact damage resistance than other configurations. This study reveals

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Section: Introductionmentioning

confidence: 99%

Acoustic emission based investigation on the effect of temperature and hybridization on drop weight impact and post-impact residual strength of hemp and basalt fibres reinforced polymer composite laminates

Kumar

Fotouhi

Saeedifar

et al. 2019

Composites Part B: Engineering

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“…The AE signal activity is more pronounced in the final stage of the compression test, which corresponds to fiber breakage. [ 39 ]…”

Section: Resultsmentioning

confidence: 99%

“…Both cluster 1 and cluster 3 are distributed in the range of 80-100 dB. [18,39] However, the number of events in cluster 3 is much greater than in cluster 1, and the events in cluster 3 are mainly distributed in 80-85 dB, while those in cluster 1 are mainly distributed in 95-100 dB. [18,21] The amplitude range of cluster 2 is mainly distributed in 70-80 dB.…”

Section: Analysis and Identification Of Damage Modesmentioning

confidence: 99%

Identification of fatigue damage modes for carbon fiber/epoxy composites using acoustic emission monitoring under fully reversed loading

et al. 2022

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In this study, the fatigue damage modes of carbon fiber/epoxy composite laminates with symmetrical architecture were investigated by acoustic emission (AE) technique under fully reversed loading. The principal component analysis and the K‐means cluster analysis using correlation AE characteristic parameters, including the energy, the amplitude, and the duration time, were performed to identify various damage modes during the fatigue test process. The analysis results of the AE signals indicated that the high‐intensity AE signals were generated by the compressive load and the low‐intensity AE signals were generated by the tensile load. The maximum energy and duration time generated by the compression load are approximately 20 and 10 times that of the tensile load, respectively, which was consistent with the force‐controlled static test results under tension and compression loadings. Therefore, the fatigue damage caused by the compressive load is much greater than that of tensile load under fully reversed loading. The results of the multi‐AE parametric clustering analysis combined with scanning electron microscope micromorphology revealed that the damage modes of the laminate specimens were classified into five types, namely matrix cracks, fiber/epoxy interface debonding, shear, delamination, and fiber breakage. In addition, the damage modes at different stages during the fatigue test process were also analyzed and discussed.

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“…The signal classification method is applicable to the failure analysis of carbon fiber and glass fiber under type I loading conditions. Most researchers use acoustic emission information to estimate some related material properties, such as ultimate strength, fracture toughness, residual strength after damage [21][22][23]. The regular classical method, based on empirical or semi-empirical formula, involves using mechanical parameters and acoustic emission information, respectively.…”

Section: Introductionmentioning

confidence: 99%

Study on Delamination Damage of CFRP Laminates Based on Acoustic Emission and Micro Visualization

Liu

Jiang

et al. 2022

Materials

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This study investigated the mechanism of delamination damage in the double cantilever beam (DCB) standard test by the use of the strain energy release rate. The curve of the strain energy release rate was verified by the Rise Angle (RA) method. For this purpose, 24-layer carbon fiber/epoxy multidirectional laminates with interface orientations of 0°, 30°, 45°, and 60° were fabricated according to the standard ASTM D5528(13). In the course of this test, acoustic emission (AE) was used for real-time monitoring, and combined with micro visualization, the damage mechanism of composite multidirectional laminates was studied at multiple scales. Combining the AE detection results with micro visualization, it is found that the AE parameters and the damage to multidirectional laminates could realize a one-to-one correspondence. Through the study of the variation of the RA value, load, and strain energy release rate with the crack length, it is proved that the AE parameters can effectively characterize the initiation of delamination damage.

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Characterization of failure mechanism in glass, carbon and their hybrid composite laminates in epoxy resin by acoustic emission monitoring

Cited by 28 publications

References 25 publications

Acoustic emission based investigation on the effect of temperature and hybridization on drop weight impact and post-impact residual strength of hemp and basalt fibres reinforced polymer composite laminates

Acoustic emission based investigation on the effect of temperature and hybridization on drop weight impact and post-impact residual strength of hemp and basalt fibres reinforced polymer composite laminates

Identification of fatigue damage modes for carbon fiber/epoxy composites using acoustic emission monitoring under fully reversed loading

Study on Delamination Damage of CFRP Laminates Based on Acoustic Emission and Micro Visualization

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