Novel panel-core connection process and impact behaviors of CF/PEEK thermoplastic composite sandwich structures with truss cores

Hu, Jiqiang; Liu, Ankang; Zhu, Shengnan; Zhang, Hanqi; Wang, Bing; Zheng, Huayong; Zhou, Zhen-Gong

doi:10.1016/j.compstruct.2020.112659

Cited by 30 publications

(16 citation statements)

References 45 publications

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“…Numerous literatures have shown that the performance of sandwich structures mainly depends on the geometrical parameters of the core layer [11,16,21]. However, from our above studies it can be found that the face-sheets also has an influence on the impact response of the sandwich structure.…”

Section: Resultsmentioning

confidence: 65%

“…The impact energy can be dissipated by CSPs through the buckling of face-sheets and corrugated core, the debonding between components, matrix and fiber fracture, and other forms of conversion (such as thermal energy, friction energy, etc.) [19,21]. The total absorbed energy (E TA ) of sandwich panels can be obtained by subtracting the initial and final kinetic energy of the impactor.…”

Section: Resultsmentioning

confidence: 99%

“…Unlike the brittle fracture of thermosetting matrix when subjected to external loadings, thermoplastic matrix has high cushioning capability and may decrease local severe damage by extending a large number of cracks around. There has been some works in field of TPC, but it is still in the initial stage [20][21][22][23][24]. Chen et al [25][26][27] fabricated thermoplastic corrugated sandwich structures and conducted a series of studies on their quasi-static compression performance.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Pan

Chen

Liu

et al. 2022

Jnl of Sandwich Structures & Materials

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Composite corrugated sandwich structures have a wide range of applications in aerospace field, and the loss of structural load carrying capacity due to low-velocity impact damage has become one of the main threats in practical applications. In this study, the impact resistance of corrugated sandwich panels prepared from thermoplastic composites (TPC) under low-velocity impact loading was investigated. Through a series of drop-weight experiments and finite element simulations, the impact response process and damage morphology of the thermoplastic composite sandwich panels were obtained, and the effects of different impact energy and different core arrangements on the energy absorption performance of the structure were explored. Finally, a parametric analysis of the perpendicularly-arranged double-layered corrugated sandwich panel was carried out. The results show that thermoplastic composite sandwich panels exhibit an overall collapse response rather than localised damage, and the structure maintains good integrity and stability. The perpendicularly-arranged sandwich panels rely on the orthogonal configuration characteristics to provide optimum impact load carrying capacity, their impact resistance can be further improved by increasing the thickness of top face-sheet and reducing the thickness of the middle face-sheet at the same time. This provides a basis for promoting the application of TPC in engineering and the design of sandwich structures.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Pan

Chen

Liu

et al. 2022

Jnl of Sandwich Structures & Materials

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“…[7] Carbon fiber reinforced polyether ketone (CF/PEEK) composites, as an outstanding representative of advanced thermoplastic composites, are considered to be the most promising and fastestgrowing engineering materials, due to the extremely high toughness and high environmental resistance (heat resistance and corrosion resistance) of PEEK. [8][9][10][11] However, due to the high melting point and high melt viscosity of PEEK resin, how to disperse the molten PEEK resin in the CF bundles as uniformly as possible and achieve sufficient impregnation of the CF bundles is a major challenge in the molding process. [12,13] And importantly, the molding process is the key process to make raw materials into the required products, and its process parameters has an remarkable impact on the forming quality and comprehensive mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Process parameter–mechanical property relationships and influence mechanism of advanced CFF/PEEK thermoplastic composites

Zhang

et al. 2022

Polymer Composites

Self Cite

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Process parameters, as the core factor to control the forming quality of composites, are crucial for the processing of composites. In this paper, plain-woven carbon fiber fabric reinforced polyether ether ketone (CFF/PEEK) thermoplastic composites are fabricated by hot-pressing process. Influence of the critical process parameters, including molding temperature, molding pressure and holding time, on mechanical properties of CFF/PEEK composites are investigated. The tensile, flexural and short-beam shear properties of CFF/PEEK composites fabricated by different process parameters were tested as evaluation indicators to achieve the optimization of process parameters. Most importantly, to deeply and systematically reveal the influence mechanism of process parameters, the high-temperature contact angle of CFF-PEEK and the viscosity-temperature characteristics of PEEK were observed and analyzed. In addition, the forming quality and microscopic failure modes of CFF/PEEK composites were observed by optical, metallographic and scanning electron microscopy, respectively. This work provides a research idea and technical route for studying the process parameters of fiber reinforced polymer composites and revealing their influence mechanism on mechanical properties.

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“…Different core configurations will demonstrate diversity of mechanical properties. The common core type includes lattice, [6][7][8] corrugate, [9] honeycomb, [10,11] re-entrant core, [12][13][14] X-core [15,16] and so on.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the dynamic behavior of composite gradient double‐arrow auxetic structure under local impact load

Zeng

et al. 2022

Polymer Composites

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Based on the design concept of functionally graded materials, the composite gradient double-arrow auxetic structures were designed and fabricated. The thickness of core layers demonstrates an increasing trend for positive gradient structure, while a decreasing trend for negative gradient structure. The thickness of core layers keeps constant for homogeneous structure. The dynamic response and failure modes of the double-arrow auxetic structure with different gradient distributions of wall thickness were obtained by foam projectile impact experiments. The influence of the gradient distribution of core wall thickness on the impact resistance of composite double-arrow auxetic structures under local impact load was investigated. The results demonstrated that the gradient distribution of core wall thickness has an important influence on the dynamic response and failure modes of the structure. The negative gradient auxetic structure revealed more excellent impact resistance compared with the positive gradient auxetic structure. In addition, the response of the gradient double-arrow auxetic structure under local impact load was simulated by ABAQUS/Explicit, and the simulation results were in good agreement with the experimental results. Combined with the experimental and numerical simulation results, it was found that the negative gradient distribution of core wall thickness had an obvious improvement on the impact resistance of composite double-arrow auxetic structure under local impact load.

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Novel panel-core connection process and impact behaviors of CF/PEEK thermoplastic composite sandwich structures with truss cores

Cited by 30 publications

References 45 publications

Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Process parameter–mechanical property relationships and influence mechanism of advanced CFF/PEEK thermoplastic composites

Investigation on the dynamic behavior of composite gradient double‐arrow auxetic structure under local impact load

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