Effect of multi-layered IIR/EP on noise reduction of aluminium extrusions for high-speed trains

Zhang, Jie; Yao, Dan; Shen, Menglu; Wang, Ruiqian; Jiang, Li; Guo, Shaoyun

doi:10.1016/j.compstruct.2021.113638

Cited by 14 publications

(3 citation statements)

References 24 publications

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“…The strength and fatigue life of a high-speed train body and bogie can be improved by using CFRP, and the lightweight effect is obvious. [1][2][3][4] Two-dimensional (2D) woven composites have been applied since the 1800s. The material properties are related to the braiding angle and braiding method, 5 which have different tensile moduli and compression moduli.…”

Section: Introductionmentioning

confidence: 99%

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Jiang,

Wang,

Yang

et al. 2023

Journal of Composite Materials

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The tensile and compressive properties of woven carbon fibre-reinforced composites (CFRP) are different owing to the buckling and entanglement of fibre bundles. Two bimodulus constitutive models (TBM and PBM) were proposed based on the track stress criterion and principal stress criterion. Combined with the Hashin three-dimensional strength criterion and Alvaro stiffness reduction criterion, a material subroutine was written to calculate the bimodulus constitutive models. Three-point bending tests of [0/90]20 and [±45]20 were designed to obtain the load–displacement curves and failure modes. The precision of the calculation results with the traditional unimodulus model and bimodulus models were compared, and the bending performance of woven CFRP was explored. The results demonstrate that fibre fracture and interlayer damage occur with different stacking sequences. The material properties can be better shown with less error as bimodulus models. The stiffness and strength of the PBM were slightly larger than those of the TBM, and the failure factors were smaller than those of the TBM. The results of the TBM are closer to the test, and the material subroutine is easier to realise. Bimodulus constitutive models have good application prospect in woven composites for higher accuracy.

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Section: Introductionmentioning

confidence: 99%

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Jiang,

Wang,

Yang

et al. 2023

Journal of Composite Materials

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“…[1][2][3] In fact, sound insulation materials and their products are urgently needed in many areas or DOI: 10.1002/mame.202200464 occasions such as walls in express train constructions, panels of vessels or aircraft cabins, large transportation pipelines, etc. [4] Among them, the viscoelastic polymer becomes one of the increasing materials for sound insulation due to its lightweight and good processibility by containing nano/micro fillers to attenuate acoustic energy through tailored micro multi-interfaces or resonant cavities. [5] For high-molecular polymers such as rubber, extensive elastic deformation occurs when they endure alternate stress of vibration and sound waves, and it features a significant lag of deformation behind the stress changes.…”

Section: Introductionmentioning

confidence: 99%

NBR/CR‐Based High‐Damping Rubber Composites Containing Multiscale Structures for Tailoring Sound Insulation

Zhu

Sain

et al. 2022

Macro Materials & Eng

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High-damping acoustic composites with unique sound insulation feature is reported, demonstrating surprisingly stable soundproof properties over a wide bandwidth of frequency (63-6300 Hz) with good mechanical properties. The extraordinary acoustic properties are attributed to the multiscale synergy of lamellar and hollow structures by multifillers adding. The acoustic composites are designed and fabricated through a low-temperature one-time rubber mixing process using nitrile butadiene rubber(NBR), chloroprene rubber (CR) as matrix and mica powder (MP), hollow glass beads (HGB), and montmorillonite (MMT) as multifillers. The soundproof mechanism is discussed in detail. Results indicate that the synergism of damping and sound absorption behaviors in the composition has a considerable impact on the acoustic characteristics, which can be controlled by the blending ratio of NBR/CR matrixes and the multiscale structures of MP/HGB/MMT multifillers. The designed multifillers acoustic composites can adapt to broadband engineering noise control including walls in express train constructions, panels of vessel or aircraft cabins, and large transportation pipelines.

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“…The obtained materials can be used as fillers for vibration-absorbing materials operating in a wide temperature range and used in transport [43][44][45] and in construction [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

The Use of Products of Microwave Aminolytic Destruction of Polyethylene Terephthalate in Vibration-absorbing Polymer Composite Materials

Vokhmyanin¹,

Vesnin²,

Avdonin³

2022

Mater. Plast.

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The aim of this work is to study the possibility of using the products of aminolytic destruction of polyethylene terephthalate (PET) and their derivatives in polymer composite materials with vibration-absorbing properties, which provide effective damping of vibrations of technogenic and natural origin in a wide temperature and frequency range. The paper considers a modern method of recycling PET waste with a mixture of amino alcohols - monoethanolamine and triethanolamine, taken in two different ratios. As a result of the destruction reaction, terephthalic acid diamide (N, N -bis (2-hydroxyethyl) terephthalamide) is formed. To accelerate the destruction process, microwave radiation of various powers of 200, 540 and 700 watts was used. The optimal conditions for aminolytic decomposition of PET were determined: the time and power of microwave radiation with PET conversion up to 95% and the yield of the target product (terephthalic acid diamide) 80-85%. The destruction process was carried out according to a closed cycle of using reagents, without the use of catalysts and at atmospheric pressure, which to a certain extent reduces the energy consumption and increases the environmental friendliness of this method of PET decomposition. The aminolytic degradation product of PET (terephthalic acid diamide) was used as a monomer in the polycondensation reaction to obtain a new oligomer (terephthalic acid oligoesteramide). The degree of polymerisation (n) is in this case 7 to 11 (number of chain links). The obtained oligomer and the PET degradation product were investigated as new components in elastomeric compositions based on chloroprene rubber and in compositions based on thermoplastic elastomers. It has been demonstrated that the introduction of an oligomer based on a PET degradation product reduces the viscosity of elastomeric compositions by 25-35%. The study was supported by a grant from the Russian Science Foundation No. 21-79-00301, https://rscf.ru/project/21-79-00301/.

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Effect of multi-layered IIR/EP on noise reduction of aluminium extrusions for high-speed trains

Cited by 14 publications

References 24 publications

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

NBR/CR‐Based High‐Damping Rubber Composites Containing Multiscale Structures for Tailoring Sound Insulation

The Use of Products of Microwave Aminolytic Destruction of Polyethylene Terephthalate in Vibration-absorbing Polymer Composite Materials

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