GF/epoxy laminates embedded with wire nets: A way to improve the low-velocity impact resistance and energy absorption ability

Wan, Yun; Diao, Chengyan; Yang, Bin; Zhang, Lu; Chen, Shenshen

doi:10.1016/j.compstruct.2018.04.041

Cited by 42 publications

(20 citation statements)

References 51 publications

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“…Additionally, the energy absorption was increased with the addition of CNT f layers (Figure 5), indicating that the CNT f enhanced the impact resistance effectively. Meanwhile, according to the CT photos, delamination was more obvious after the introduction of CNT f layers, and the delamination area was also increased with the addition of the CNT f , demonstrating that the CNT f in the EP matrix can absorb more incident energy by the increasing delamination area 17 . In addition, the secondary breakage caused by delamination was more obvious by adding CNT f layers, which consumed more impact energy.…”

Section: Resultsmentioning

confidence: 96%

“…Meanwhile, according to the CT photos, delamination was more obvious after the introduction of CNT f layers, and the delamination area was also increased with the addition of the CNT f , demonstrating that the CNT f in the EP matrix can absorb more incident energy by the increasing delamination area. 17 In addition, the secondary breakage caused by delamination was more obvious by adding CNT f layers, which consumed more impact energy. Thus, it was concluded that the impact resistance of the EP composites can be enhanced by the introduction of the CNT f and the increase of CNT f layers further improved the impact resistance.…”

Section: Impact Resistance Behaviormentioning

confidence: 99%

“…Zhang et al 16 discussed the electromagnetic characteristics of CNT f materials, indicating extraordinary shielding performance. Additionally, polymeric composites are susceptible to damage caused by external dynamic loads, 17 the poor impact tolerance of polymer composites limits their practical applications. Thus, to get better damage tolerance, improving the reliability of polymeric composites is necessary 18 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced impact resistance and electromagnetic interference shielding of carbon nanotubes films composites

Mei

Lü

Zhou

et al. 2020

J of Applied Polymer Sci

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High reliability and high-performance electromagnetic interference (EMI) shielding polymeric composite was fabricated by introducing carbon nanotube films (CNT f) into an epoxy (EP) matrix as mechanical and EMI shielding reinforcement simultaneously. According to the computed tomography (CT) detection recorded by a high-speed camera, CNT f exhibited excellent mechanical behavior and good energy absorption. While being introduced into laminated EP composite, the CNT f enhanced both the mechanical performance and EMI shielding performance. The damage mechanism of CNT f /EP was studied by CT detection of the impact process, indicating that the CNT f absorbed the impact energy by improving the delamination resistance. Additionally, the multilayered CNT f can trap and attenuate the entered electromagnetic microwaves by repeated adsorption, reflection, and scattering in the composite, resulting in excellent EMI shielding performance. Consequently, the energy absorption and the total shielding effectiveness of the CNT f /EP reached to 4.58 × 10 −3 J and 52.31 dB, respectively. Therefore, we demonstrated that the CNT f was an ideal functional reinforcement for mechanically strong and high-performance EMI shielding polymeric composites and the CNT f reinforced EP composite is promising in practical EMI-shielding applications.

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Section: Resultsmentioning

confidence: 96%

Section: Impact Resistance Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced impact resistance and electromagnetic interference shielding of carbon nanotubes films composites

Mei

Lü

Zhou

et al. 2020

J of Applied Polymer Sci

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“…The pressure–time curve shows a bilinear behavior at the knee point of P = 35 MPa and t = 300 s. The relative resistance firstly shows a steady tendency at 0 with the increase of pressure, until reaching the knee point of the pressure–time curve. Then, the relative resistance shows an increasing tendency with the pressure, until the bursting of the vessel at t = 600 s. Also, it should be noted that the signals fluctuated in the minoring process when the pressure ranged from 35 to 45.73 MPa, which is mainly due to the gradual damage feature of the composite skin [44,45,46]. The relative resistance is compared with the stain measured by strain gauge-2 in Figure 15b.…”

Section: Applying the Mwcnt Sensor In Composite Pressure Vesselmentioning

confidence: 99%

In-Situ Monitoring of a Filament Wound Pressure Vessel by the MWCNT Sensor under Hydraulic Fatigue Cycling and Pressurization

Xiao

Yang

Xuan

et al. 2019

Sensors

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As a result of the high specific strength/stiffness to mass ratio, filament wound composite pressure vessels are extensively used to contain gas or fluid under pressure. The ability to in-situ monitor the composite pressure vessels for possible damage is important for high-pressure medium storage industries. This paper describes an in-situ monitoring method to permanently monitor composite pressure vessels for their structural integrity. The sensor is made of a multi-walled carbon nanotube (MWCNT) that can be embedded in the composite skin of the pressure vessels. The sensing ability of the sensor is firstly evaluated in various mechanical tests, and in-situ monitoring experiments of a full-scale composite pressure vessel during hydraulic fatigue cycling and pressurization are performed. The monitoring results of the MWCNT sensor are compared with the strains measured by the strain gauges. The results show that the measured signal by the developed sensor matches the mechanical behavior of the composite laminates under various load conditions. In the hydraulic fatigue test, the relationship between the resistance and the strain is built, and could be used to quantitative monitor the filament wound pressure vessel. The bursting of the pressure vessel can be detected by the sharp increase of the MWCNT sensor resistance. Embedding the MWCNT sensor into the composite pressure vessel is successfully demonstrated as a promising method for structural health monitoring.

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“…[17] claimed that further researches are still required in order to improve the impact resistance of hybrid composites. Our previous work [18] has explored the use of wire nets/glass laminates to increase the anti-impact performance of hybrid laminates. The results show that the impact energy absorption ability of the designed hybrid laminates could be enhanced by adding wire nets into the composites.…”

Section: Introductionmentioning

confidence: 99%

Impact and compression-after-impact behavior of sandwich panel comprised of foam core and wire nets/glass fiber reinforced epoxy hybrid facesheets

Wan

Yang

Jin

et al. 2020

Jnl of Sandwich Structures & Materials

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In this paper, we manufactured a novel sandwich panel that comprised of the foam core and the hybrid facesheets by vacuum-assisted resin infusion process. In the hybrid facesheets, the reinforcing phases are made of woven glass fabric cloth in company with wire nets, while the matrix is epoxy resin. Four categories of specimens with different wire nets contents are designed. To investigate the impact resistance ability of the designed sandwich panel, low-velocity impact tests are performed with respect to the contact load, absorbed energy, and failure mode. Compression-after-impact test is conducted to determine the residual mechanical properties of the postimpact sandwich panels. Digital image correlation technology is adopted to measure the strain distribution in the panels in compression-after-impact test. Results show that wire nets in the facesheet of the sandwich panel could enhance the energy absorb ability as well as the compression-after-impact strength significantly. Fiber/wire nets breaking, delamination, and foam core cracking are the main damage modes formed in the impact event, while the incident energy is mainly absorbed by wire nets breaking. In compression-after-impact test, bucking and delamination are the main damage modes, and the compressive stability is enhanced by the wire nets.

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GF/epoxy laminates embedded with wire nets: A way to improve the low-velocity impact resistance and energy absorption ability

Cited by 42 publications

References 51 publications

Enhanced impact resistance and electromagnetic interference shielding of carbon nanotubes films composites

Enhanced impact resistance and electromagnetic interference shielding of carbon nanotubes films composites

In-Situ Monitoring of a Filament Wound Pressure Vessel by the MWCNT Sensor under Hydraulic Fatigue Cycling and Pressurization

Impact and compression-after-impact behavior of sandwich panel comprised of foam core and wire nets/glass fiber reinforced epoxy hybrid facesheets

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