Anomalous inapplicability of nacre-like architectures as impact-resistant templates in a wide range of impact velocities

Zhang, Xiao; Wu, Kun; Ni, Yong; He, Linghui

doi:10.1038/s41467-022-35439-3

Cited by 39 publications

(16 citation statements)

References 50 publications

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“…As shown in Figure d, for conventional lattice-based solid impact-resistant composites (such as metallic and polymeric lattices) and fiber-based composite filled with STF, high energy absorption often requires large deformation and high stiffness (i.e., high quasi-static modulus). ,,− Meanwhile, the existing soft impact-resistant composites consisting of polymers and solid–liquid hybrids could only offer a relatively low quasi-static modulus (e.g., <5 MPa) with insufficient energy absorption. − Therefore, previously, it is quite challenging to simultaneously achieve a high quasi-static softness and a good impact performance. In this work, via bioinspired lattice designs, a flexible (i.e., quasi-static modulus of ∼71.9 kPa) solid–liquid composite was prepared, showing a high energy absorption (i.e., 425.4 kJ/m 3 ) approaching or even higher than those of some metallic (i.e., 489.6 kJ/m 3 ) or glass-based composites (i.e., 354.3 kJ/m 3 ).…”

Section: Bioinspired 3d Solid–liquid Lattice Designs Of Flexible Impa...mentioning

confidence: 99%

“…After unveiling the mechanisms of fresh durian peels, biomimetic composites consisting of 3D printed polymeric lattice frames filled with shear thickening fluids (STFs) are designed, fabricated, and characterized via simulations and experiments. The polymeric lattice shows a closed-form 3D configuration, which could be fabricated using the PolyJet printing techniques. − A variety of lattice geometries are investigated under different impact velocities, and an optimal lattice configuration of biomimetic solid–liquid composite is determined, featuring excellent flexibility and impact-resistant performances. The biomimetic designs proposed in this work could be potentially used in the development of future flexible impact-resistant systems.…”

Section: Introductionmentioning

confidence: 99%

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Flexible Impact-Resistant Composites with Bioinspired Three-Dimensional Solid–Liquid Lattice Designs

Wang

Bai

et al. 2023

ACS Appl. Mater. Interfaces

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The ubiquitous solid−liquid systems in nature usually present an interesting mechanical property, the rate-dependent stiffness, which could be exploited for impact protection in flexible systems. Herein, a typical natural system, the durian peel, has been systematically characterized and studied, showing a solid−liquid dual-phase cellular structure. A bioinspired design of flexible impact-resistant composites is then proposed by combining 3D lattices and shear thickening fluids. The resulting dual-phase composites offer, simultaneously, low moduli (e.g., 71.9 kPa, lower than those of many reported soft composites) under quasi-static conditions and excellent energy absorption (e.g., 425.4 kJ/m 3 , which is close to those of metallic and glass-based lattices) upon dynamic impact. Numerical simulations based on finite element analyses were carried out to understand the enhanced buffering of the developed composites, unveiling a lattice-guided fluid−structure interaction mechanism. Such biomimetic lattice-based flexible impact-resistant composites hold promising potential for the development of next-generation flexible protection systems that can be used in wearable electronics and robotic systems.

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Section: Bioinspired 3d Solid–liquid Lattice Designs Of Flexible Impa...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible Impact-Resistant Composites with Bioinspired Three-Dimensional Solid–Liquid Lattice Designs

Wang

Bai

et al. 2023

ACS Appl. Mater. Interfaces

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show abstract

“…Nature hosts a multitude of multifunctional materials that are lightweight, resilient, and tough, which feature structural designs ranging from nanoscale to macroscale. These materials provide vivid inspiration for preparing green and sustainable multifunctional materials. − A typical example is the shell pearl layer, where the internal calcium carbonate alternates with proteins, forming a lamellar “brick and mortar” arrangement. − This layered structure dissipates external stresses and energy and prevents brittle fractures. Additionally, a material that mimics the pearl layer with high strength and toughness has been developed.…”

Section: Introductionmentioning

confidence: 99%

Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls

Zeng,

Dong,

Luo

et al. 2024

ACS Nano

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The production of wood-based panels has a significant demand for mechanically strong and flexible biomass adhesives, serving as alternatives to nonrenewable and toxic formaldehyde-based adhesives. Nonetheless, plywood usually exhibits brittle fracture due to the inherent trade-off between rigidity and toughness, and it is susceptible to damage and deformation defects in production applications. Herein, inspired by the microstructure of dragonfly wings and the cross-linking structure of plant cell walls, a soybean meal (SM) adhesive with great strength and toughness was developed. The strategy was combined with a multiple assembly system based on the tannic acid (TA) stripping/modification of molybdenum disulfide (MoS 2 @TA) hybrids, phenylboronic acid/quaternary ammonium doubly functionalized chitosan (QCP), and SM. Motivated by the microstructure of dragonfly wings, MoS 2 @TA was tightly bonded with the SM framework through Schiff base and strong hydrogen bonding to dissipate stress energy through crack deflection, bridging, and immobilization. QCP imitated borate chemistry in plant cell walls to optimize interfacial interactions within the adhesive by borate ester bonds, boron−nitrogen coordination bonds, and electrostatic interactions and dissipate energy through sacrificial bonding. The shear strength and fracture toughness of the SM/QCP/ MoS 2 @TA adhesive were 1.58 MPa and 0.87 J, respectively, which were 409.7% and 866.7% higher than those of the pure SM adhesive. In addition, MoS 2 @TA and QCP gave the adhesive good mildew resistance, durability, weatherability, and fire resistance. This bioinspired design strategy offers a viable and sustainable approach for creating multifunctional strong and tough biobased materials.

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“…can cause significant but barely visible damage, which has severely affect residual behaviors and mechanical performance for composite structures. 15,16 The helicoidal scheme is known to affect the face-on LVI response of fiber-reinforced laminates heavily by altering the damage mechanisms and the related propagation. 17 It slows down crack propagation to a certain extent by crack twisting, stopping, flexing or bridging.…”

Section: Introductionmentioning

confidence: 99%

An analytical study on low velocity impact resistance behaviors of general bio‐inspired helicoidal composite plates

Rao,

Xiong,

Yao

et al. 2024

Polymer Composites

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Through evolutionary processes, helicoidal structures have been proven to exhibit exceptional load‐carrying capacity and impact resistance performance. To date, extensive experimental and numerical studies have been carried out on their impact behaviors, while few relevant analytical studies have been reported even though it is urgently needed for the preliminary assessment of structure design and optimization. In this work, based on the first shear deformation theory (FSDT) and the improved linearized Hertzian contact method, an analytical model for low velocity impact (LVI) performances of helicoidal laminates with arbitrary layups is developed. Therein, the post‐impact damage is taken into account according to continuum damage mechanics (CDM). Comparisons of load‐carrying capacity and energy‐absorbed performance between the proposed model prediction and the existing experimental data\numerical results have been made for verification. Besides, LVI behaviors of conventional laminates with unidirectional distribution andcross‐ply arrangement are discussed. Moreover, the role of rotation angle, impact velocity and the plate dimension on helicoidal laminates' LVI performances are analyzed quantitatively. There is evidence that helical layouts are better able to absorb energy and delay the in‐plane damage.Highlights The LVI responses of bio‐inspired single‐helicoidal (SH) and double‐helicoidal (DH) composite laminate are studied. An effective model to predict the LVI responses considered the post‐impact damage is developed. A comparison of the LVI performance of single‐helicoidal structures with various lay‐up schemes is carried out. DH structure has better low velocity impact resistance than SH structure when the rotation angle shares the same.

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Anomalous inapplicability of nacre-like architectures as impact-resistant templates in a wide range of impact velocities

Cited by 39 publications

References 50 publications

Flexible Impact-Resistant Composites with Bioinspired Three-Dimensional Solid–Liquid Lattice Designs

Flexible Impact-Resistant Composites with Bioinspired Three-Dimensional Solid–Liquid Lattice Designs

Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls

An analytical study on low velocity impact resistance behaviors of general bio‐inspired helicoidal composite plates

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