Composites Science and Technology最新文献

{"title":"Ultralight and high sensitive CA/TPU/PPy nanofiber aerogels with coaxial conductive structure for wearable piezoresistive sensors","authors":"Long Chen ,&nbsp;Siqi Chen ,&nbsp;Jiaqi Li ,&nbsp;Chenyao Hu ,&nbsp;Miaomiao Zhu ,&nbsp;Ranhua Xiong ,&nbsp;Chaobo Huang","doi":"10.1016/j.compscitech.2025.111062","DOIUrl":"10.1016/j.compscitech.2025.111062","url":null,"abstract":"<div><div>Flexible wearable electronics impose ever-more stringent demands on the design strategies for piezoresistive sensing materials. Nanofiber aerogels (NFAs) have emerged as a focal point in this field, attributed to their unique characteristics such as low density, extensive specific surface area, high porosity, and outstanding mechanical performance. Conventional methods for fabricating conductive NFA composites often entail complex procedures, including additional thermal annealing and carbonization, to establish three-dimensional conductive networks, which significantly hinder scalability and practical applications. To overcome this challenge, we propose a sustainable, cost-effective, and efficient hydrogen-bonded self-assembly drive strategy for designing conductive nanofiber networks with robust coaxial structures. During polymerization, pyrrole monomers were in situ polymerized onto cellulose acetate/thermoplastic polyurethane (CA/TPU) composite nanofibers through hydrogen-bonding, forming a roubst conductive shell layer while facilitating the mutual cross-linking of short nanofibers to establish a porous three-dimensional network. Benefiting from the nanofiber skeleton and multilevel pore structure, the resultant CA/TPU/PPy NFA (CTP-NFA) possesses an ultra-low volume density (30.77 mg cm⁻³) and remarkable mechanical properties (55.78 kPa at 80 % strain), enduring deformation under 1700 times its weight. Furthermore, the associated aerogel sensor exhibits ultra-high sensitivity (33.56 kPa⁻¹), rapid response time (100 ms), and exceptional cycling stability (&gt;5500 cycles of compression). Significantly, the NFA-based piezoresistive sensor precisely detects pressure signals as low as 30 Pa, enabling accurate monitoring of adult pulse waveforms. Given its superior performance, the resultant NFA presents substantial promise for applications in human health monitoring and human-computer interaction.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111062"},"PeriodicalIF":8.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon nanotubes-intervened interface design of quartz fiber/polyurethane composite fibers towards improved mechanical properties","authors":"Jiajing Zhang ,&nbsp;Zhaozixuan Zhou ,&nbsp;Chunhua Zhang ,&nbsp;Zhuan Fu ,&nbsp;Sijie Zhou ,&nbsp;Jiaxing Shao ,&nbsp;Liangjun Xia ,&nbsp;Xin Liu ,&nbsp;Weilin Xu","doi":"10.1016/j.compscitech.2025.111065","DOIUrl":"10.1016/j.compscitech.2025.111065","url":null,"abstract":"<div><div>Inspired by the <em>Xanthium</em> fruit-like structure, a hybrid hardness and softness structure of carbon nanotubes (CNTs) and polymer chains is considered to be a promising hybrid grafting material. The distributed hard CNTs and soft polymer chains (γ -mercaptopropyl triethyl silane, MPTS) increase the surface roughness of short quartz fibers (QFs), forming a percolated network throughout the surrounding polyurethane (PU) matrix, thereby improving the interfacial interaction between QFs and PU. The modified QFs demonstrate improved interfacial adhesion, higher fiber surface energy, and greater interfacial area failure resistance. The composite fibers exhibited better interfacial adhesion owing to the multi-scale interface structure by CNT@MPTS. In comparison to the unmodified QFs, the interfacial shear force increased by 50.59 %, respectively. Enhancements in the mechanical properties, load transfer in the interface phase, local stress elimination, and inhibition of interphase crack are also brought about by the synergistic effect of CNT and MPTS. The tensile strength of CNT@MPTS modified QFs/PU composite fibers (8%[email protected]%QFPU) rose by 16.72 %. These results indicate a promising route toward developing continuous QFs-based composites with applications as textile-reinforced polymer composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111065"},"PeriodicalIF":8.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional bionanocomposite hydrogels based on gelatin methacrylate and polyphenolic 2D nanoparticles Decorated with antimicrobial Bis(imidazolium)-based ionic liquids","authors":"Sevda Zaki-Germi ,&nbsp;Davoud Afshar ,&nbsp;Ali Akbari ,&nbsp;Nasser Nikfarjam","doi":"10.1016/j.compscitech.2025.111059","DOIUrl":"10.1016/j.compscitech.2025.111059","url":null,"abstract":"<div><div>Developing multifunctional bionanocomposite hydrogels with enhanced mechanical strength and antimicrobial properties is essential for advancing therapeutic applications in biomedical settings. Recent trends incorporate nanoparticles like silver and titanium dioxide for antibacterial action, and graphene oxide for mechanical robustness; however, these approaches often face scalability and cost limitations. This study introduces two-dimensional (2D) nanosheets incorporating ionic liquids to enhance gelatin methacrylate-based hydrogels by simultaneously imparting mechanical robustness, antioxidant properties, and antimicrobial activity. These 2D nanosheets were produced through polyphenolic fractions of propolis-based nanosheets (PFPNSs) through pyrolysis in a neutral atmosphere, followed by functionalization with 3-(Trimethoxysilyl)propyl methacrylate (MPS) and a bisimidazolium based dicationic ionic liquid (BIm-IL) (PFPNS@MPS-BIm-IL). The functionalization with MPS as a silane coupling agent promotes covalent bonding between the nanosheets and polymer chains, improving mechanical stability. Additionally, incorporating ionic liquids significantly boosts the inherent antimicrobial properties of PFPNS, increasing cation availability for microbial membrane disruption. The resulting hydrogels named HGNSILx (including nanosheets functionalized with ionic liquids and vinyl groups) exhibit superior porosity, tunable mechanical attributes, swelling ratios, protein adsorption and significant antimicrobial and hemocompatibility properties, indicating their potential for various biomedical applications. This comprehensive integration enhances cell viability, biocompatibility, and adhesion to natural bone. HGNSILx are promising candidates for tissue regeneration and advanced wound healing applications. Their superior mechanical properties make them particularly well-suited for bone tissue engineering. Additionally, their potential to promote healing and reduce infection risks positions them as valuable options in post-surgical recovery and wound management, ultimately reducing healing times and improving patient outcomes.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111059"},"PeriodicalIF":8.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Component-level fatigue life prediction of short fiber reinforced polymers via a novel parametric fatigue dataset generation method","authors":"Lei Zhang ,&nbsp;Hanyu Zhang ,&nbsp;Zhao Liu ,&nbsp;Ping Zhu","doi":"10.1016/j.compscitech.2025.111060","DOIUrl":"10.1016/j.compscitech.2025.111060","url":null,"abstract":"<div><div>Predicting the fatigue life of short fiber reinforced polymers (SFRP) is complicated due to their inherent heterogeneity and in-service alternating loads. Despite numerous research addressing the fatigue life prediction of SFRP specimens, applying these findings to engineering applications remains challenging. This study presents an innovative component-level fatigue life prediction framework for SFRP components, central to which is a parametric material fatigue dataset (MFD) generation method considering fiber microstructures and stress ratios. Local fiber orientation tensors from mold flow analysis are then mapped onto the structural mesh to obtain the stress field. Fatigue life is subsequently solved using MFD and local stress via a polynomial-form parametric multiaxial fatigue failure criterion. The accuracy of the MFD generation method and the fatigue life calculation algorithm is confirmed through micromechanical models and fatigue tests on specimens with various orientations and stress ratios. Final validation is achieved via fatigue tests and numerical modeling of an SFRP automobile tailgate. Results show that the fatigue crack initiation is accurately identified, and the predicted life falls within a threefold error band of the experimental value, confirming the high reliability of this framework. This study advances component-level fatigue life prediction of SFRP, offering a procedural and parametric tool for engineering applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111060"},"PeriodicalIF":8.3,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lattice-filler dual-gradient and hierarchical porous architectures customized by multiple-nozzle 3D printing towards excellent absorption-dominant electromagnetic interference shielding","authors":"Junfei Zhang ,&nbsp;Lingjun Zeng ,&nbsp;Xixia Liu ,&nbsp;Dabin Zhang ,&nbsp;Ang Gao ,&nbsp;Bai Xue ,&nbsp;Qiang Zheng ,&nbsp;Yixiong Feng ,&nbsp;Lan Xie","doi":"10.1016/j.compscitech.2025.111058","DOIUrl":"10.1016/j.compscitech.2025.111058","url":null,"abstract":"<div><div>Exploiting high-performance absorption-dominant electromagnetic interference (EMI) shielding composites is ungently desired yet challenging for minimizing the secondary electromagnetic radiation pollution. Herein, lattice-filler dual-gradient Fe₃O₄/carbon nanotube/polyurethane&amp;MXene (Fe₃O₄/CNT/PU&amp;MXene; DGFCP&amp;M) composite frames with a positive gradient of functional filler and a negative gradient of lattice size were successfully fabricated by a powerful multiple-nozzle immersion-precipitation 3D printing (ip3DP) technology. The insulative top layer of DGFCP&amp;M frames with larger lattice pores plays a role as an impedance matching layer to mitigate the reflection of electromagnetic wave (EMW). Nevertheless, the highly conductive bottom layer of MXene with non-lattice structure acts as a reflective layer to reflect EMW back to the interior of DGFCP&amp;M frames. Moreover, hierarchical porous structures (lattice macropores and filament micropores) can prolong the transmitting path to enhance the attention of EMW energy. In consequence, excellent SE_T of 72.7 dB and A of 0.62 are achieved for DGFCP&amp;M-8 composite frame at EMW incident from top surface, both of which are superior to those of homogenous and single-gradient composite frames. Furthermore, visual simulations intuitively verify that the lattice-filler dual-gradient composite frame has an excellent absorption-dominant EMI shielding performance. The construction of lattice-filler dual-gradient architectures based on multiple-nozzle ip3DP provides a valuable insight into the fabrication and adjustment of absorption-dominant EMI shielding composites for the promising application in next-generation flexible and portable electronic devices.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111058"},"PeriodicalIF":8.3,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermo-oxidative ageing effect on the anisotropic compressive properties of 3D angle-interlock woven composites","authors":"Feng Xu ,&nbsp;Jing Long ,&nbsp;Baozhong Sun ,&nbsp;Zhao Sha ,&nbsp;Chun H. Wang ,&nbsp;Jin Zhang ,&nbsp;Bohong Gu","doi":"10.1016/j.compscitech.2025.111063","DOIUrl":"10.1016/j.compscitech.2025.111063","url":null,"abstract":"<div><div>Thermo-oxidative ageing of 3D interlock woven composites can significantly degrade their mechanical properties, yet the complex interplay between the temperature-time degradation of the matrix and the 3D fibre architecture remains poorly understood. Herein, we investigate how thermo-oxidative ageing affects the anisotropic compressive properties of 3D angle-interlock woven composites. High-resolution digital image correlation (DIC) and high-speed imaging were employed to analyse the deformation behaviours, as well as failure initiation and progression processes, in different directions under quasi-static compressive loading. The results reveal that oxidative ageing caused matrix microcracking and degradations in the matrix's properties, with significant reductions in the composite's compressive properties in different directions. Matrix degradation emerged as the dominant factor, with ageing over 32 days causing a 17.33 % and 27.64 % reduction in the yield strength and compression modulus, respectively. The retentions of compressive properties of the composite exhibited significant directional dependence, with the Z-direction showing the most severe degradation due to the combined effects of resin degradation and interfacial debonding. Additionally, the integrated interwoven warp-weft structure and the increased Poisson's ratio effect by ageing-induced microcracks cracks resulted in greater transverse strains along the Y-direction (warp-direction) than the X-direction (weft-direction). Furthermore, the ageing-induced microcracks affected damage progression paths and accelerated the damage propagation rates while not changing the final V-shaped shear band. These findings provide crucial insights into the effects of thermo-oxidative ageing on the compressive mechanical properties of 3D angle-interlock woven composites, providing new knowledge to ensure the safe application of composites under extreme thermal-oxidative environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111063"},"PeriodicalIF":8.3,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The prediction of homogenized effective properties of continuous fiber composites based on a deep transfer learning approach","authors":"Zefei Wang ,&nbsp;Sen Wang ,&nbsp;Changwen Ma ,&nbsp;Zhuoyun Yang","doi":"10.1016/j.compscitech.2025.111050","DOIUrl":"10.1016/j.compscitech.2025.111050","url":null,"abstract":"<div><div>The homogenization method based on the representative volume element can effectively mitigate the computational challenges posed by the significant scale differences in composite materials. In the structural design of Continuous Fiber Composites (CFCs), a wide range of variable parameters must be considered to meet the demands of practical applications. This paper proposes a rapid prediction method for the equivalent properties of CFCs based on deep transfer learning. First, the influence of fiber volume fraction and fiber distribution randomness on the equivalent properties was studied through extensive numerical simulation models. Next, a Residual Convolutional Neural Network (ResNet) was utilized to handle multimodal inputs of CFCs' cross-sectional images and material properties, aiming to learn the highly nonlinear relationship between them and their equivalent properties. Finally, to ensure that the trained model could be quickly adapted to composite materials with mechanical properties transitioning from a small region of the property space to another, a transfer learning approach was utilized to fine-tune specific parts of the model. This method enables the prediction of equivalent properties of various composite materials with shorter training time and fewer samples, thereby supporting multi-scale simulation analysis and structural design of composite materials.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111050"},"PeriodicalIF":8.3,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced mechanical properties of aramid fiber/epoxy composites through reinforcing interfacial adhesion based on strong hydrogen bonding interactions","authors":"Yan Wang,&nbsp;Xianhui Dong,&nbsp;Yan Wang,&nbsp;Zuming Hu,&nbsp;Yinjun Chen,&nbsp;Junrong Yu,&nbsp;Meifang Zhu","doi":"10.1016/j.compscitech.2025.111057","DOIUrl":"10.1016/j.compscitech.2025.111057","url":null,"abstract":"<div><div>Aramid fiber/epoxy (AF/EP) composites often exhibit suboptimal interfacial bonding between the fibers and matrix, which undermines their mechanical performance and hinders the broader application of these materials. Herein, an amphiphilic polymer brush of polyvinyl alcohol-2-Amino-4-hydroxy-6-methylpyrimidine-hexyl-isocyanate (PVA-UPy) as interfacial modification agent was designed and synthesized to reinforce interfacial bonding of AF/EP composites. The incorporation of PVA-UPy markedly improved the interfacial adhesion between the aramid fibers and the epoxy matrix, leveraging strong supramolecular interactions and principle of “like dissolves like”. The interfacial shear strength of AF/EP composites displayed a substantial boost from 27.9 MPa to 60.9 MPa. Additionally, the interlaminar shear strength, flexural strength and tensile strength of composites were reinforced by 55.9 %, 46.8 % and 42.9 %, respectively. The reinforcement is ascribed to the formation of strong hydrogen bonds between 2-Amino-4-hydroxy-6-methylpyrimidine (UPy) side chain of PVA-UPy and the AF/EP interface, as well as the compatibility principle between hydroxyl and epoxy. This work presents a novel and straightforward approach to the design and synthesis of interfacial modification agents, offering an effective strategy for reinforcing interfacial bonding in composites through supramolecular interactions.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111057"},"PeriodicalIF":8.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of low-density polyethylene on properties of ethylene-vinyl based semi-conductive shielding materials","authors":"Jie Lin ,&nbsp;Shuai Hou ,&nbsp;Zhi-Xing Wang ,&nbsp;Yong-Fan Lin ,&nbsp;Yuan-Ze Liu ,&nbsp;Qiu-Yu Duan ,&nbsp;Run-Pan Nie ,&nbsp;Ding-Xiang Yan ,&nbsp;Li-Chuan Jia ,&nbsp;Zhong-Ming Li","doi":"10.1016/j.compscitech.2025.111046","DOIUrl":"10.1016/j.compscitech.2025.111046","url":null,"abstract":"<div><div>Ethylene-vinyl acetate copolymer (EVA)-based semi-conductive shielding materials (SCSM) are extensively used in low- and medium-voltage cables. However, the limited thermal stability of EVA prevents its application in high-voltage cables. Herein, low-density polyethylene (LDPE) was introduced to blend with EVA, and carbon black (CB) served as conductive fillers to fabricate the CB/EVA@LDPE composites with enhanced thermal stability for application as high-voltage SCSM. Benefiting from the inter-chain interaction between EVA and LDPE molecular chains and the selective distribution of CB, the CB/EVA@LDPE composites achieve the integration of favorable thermal stability, superior electrical performance and good mechanical properties. Specifically, the resultant composites exhibit a superior initial decomposition temperature (300.1 °C) at 30 phr LDPE compared to the CB/EVA composites (285.6 °C). The tensile strength and elongation at break of the CB/EVA@LDPE composites are 18.6 MPa and 281.2 %, which still maintain a desirable level. Moreover, the incorporation of LDPE also contributes to a favorable volume resistivity of 63.9 Ω cm and low PTC intensity (4.7) based on the unique conductive network in the EVA/LDPE blend system. This work is expected to provide favorable insights on the design of high thermal stable SCSM for applications in high-voltage cables.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"262 ","pages":"Article 111046"},"PeriodicalIF":8.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanics of composites with finite length crimped fibers dispersed in a soft matrix","authors":"Nandan N. Pitre ,&nbsp;Edith Tzeng ,&nbsp;Nhung Nguyen ,&nbsp;Steven Abramowitch ,&nbsp;Sachin S. Velankar","doi":"10.1016/j.compscitech.2025.111056","DOIUrl":"10.1016/j.compscitech.2025.111056","url":null,"abstract":"<div><div>Collagen-containing tissues show strain hardening behavior due to the alignment and the waviness of collagen fibers. As the fibers uncrimp and align with stretching, they become increasingly load-bearing and make the tissue strain hardening. We consider the mechanics of analogous synthetic composites comprising stiff crimped fibers dispersed in a soft elastomeric matrix. A novel workflow is developed wherein a random configuration of hundreds of finite-length crimped fibers embedded in a soft matrix can be created, meshed, and then simulated by 3D finite element methods. We show that the mechanical behavior of these composites is affected by the degree of fiber crimp, the fiber volume fraction, and fiber orientation. The degree of reinforcement of the soft matrix was found to increase with volume fraction of the fibers, and with better alignment of the fibers along the tension direction. Fibers with larger crimp amplitude were found to show strain hardening behavior, i.e. contribute little to the stress at small strain, but much more at large strain. The Holzapfel-Gasser-Ogden model is shown to capture the stress-strain behavior adequately. Further, we show that simulations of a single fiber embedded in a soft matrix can approximately predict the mechanical behavior of multifiber composites at much reduced computational cost. Such composites of chopped crimped fibers offer the benefit of reproducing the mechanical behavior of tissues, while still being flow-processable.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"263 ","pages":"Article 111056"},"PeriodicalIF":8.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143330099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}