{"title":"Scale dependent effects on the fatigue response of woven textile composites","authors":"Eugene Kheng , Royan D’Mello , Anthony Waas","doi":"10.1016/j.compositesb.2025.112341","DOIUrl":"10.1016/j.compositesb.2025.112341","url":null,"abstract":"<div><div>The tensile fatigue response of notched twill textile composites is studied in this investigation. The goal is to evaluate the effect of a notch of fixed size and its placement (with respect to the textile’s mesostructure), on the tensile fatigue response, thereby showing that scale effects are important in understanding and explaining the obtained experimental results. Load-controlled fatigue experiments, supplemented with the Digital Image Correlation (DIC) technique to monitor strains, are conducted. A finite element based fatigue damage model is presented to model matrix degradation and the fatigue response of the twill textile composite. Based on the experimental results, we can distinguish between two types of fatigue response — fatigue resistant (FR) and fatigue susceptible (FS). Because the size of the notch is comparable to the characteristic geometric length scales of the mesostructure, its placement with respect to the mesostructure affects the overall damage evolution and fatigue life across these two families of specimens. The finite element model is shown to reproduce the key features observed in the experiments.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112341"},"PeriodicalIF":12.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578108","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}
Ziyi Gong, Bin Tian, Ke Zheng, Weinan Tang, Xiao Chen, Quancai Li, Bo Wen, Wei Wu
{"title":"Temperature-sensitive dual-matrix composite ink for ultrahigh-density and large-scale flexible temperature microsensor array","authors":"Ziyi Gong, Bin Tian, Ke Zheng, Weinan Tang, Xiao Chen, Quancai Li, Bo Wen, Wei Wu","doi":"10.1016/j.compositesb.2025.112357","DOIUrl":"10.1016/j.compositesb.2025.112357","url":null,"abstract":"<div><div>Flexible temperature sensor arrays (FTSAs) are critical in applications such as biomedical monitoring and environmental assessment due to their capacity to capture local temperature changes. However, developing FTSAs with high sensitivity, high sensing density, and large scalability remains a daunting challenge. Herein, a novel composite ink with a dual polymer matrix that facilitates the fabrication of high-performance flexible temperature sensors is developed. Taking the advantage of screen-printing technology, flexible temperature sensors with a minimum side length of 500 μm are fabricated. Furthermore, an ultrahigh-density and large-scale FTSA with up to 2500 units (50 × 50) is developed, accompanied by a real-time data acquisition system to achieve heat source localization and thermal imaging. Within the temperature range of 25–40 °C, the sensor demonstrates the highest temperature coefficient of resistance of 14.4 %/°C, excellent resolution of 0.1 °C, superior thermal cycling stability (1000 cycles), and insensitivity to additional stimuli such as bending, humidity, pressure, and vibration, demonstrating applications in respiratory monitoring and temperature monitoring. These results provide a novel idea for temperature monitoring in applications such as pet temperature monitoring, electronic skin (e-skin) and smart skin for aircraft.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112357"},"PeriodicalIF":12.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562898","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}
Yaqiong Liu , Yuqing Shang , Zhen Wang , Hongxia Gao , Nana Jin , Weihao Zhang , Huoyun Shen , Shaolan Sun , Dongzhi Wang , Zhiwei Wang , Xiaosong Gu , Yumin Yang , Guicai Li
{"title":"From microsphere synthesis to neural tissue regeneration: Unraveling the potentials and progress","authors":"Yaqiong Liu , Yuqing Shang , Zhen Wang , Hongxia Gao , Nana Jin , Weihao Zhang , Huoyun Shen , Shaolan Sun , Dongzhi Wang , Zhiwei Wang , Xiaosong Gu , Yumin Yang , Guicai Li","doi":"10.1016/j.compositesb.2025.112363","DOIUrl":"10.1016/j.compositesb.2025.112363","url":null,"abstract":"<div><div>Microspheres have been extensively employed as drug delivery systems within the realm of tissue engineering, owing to their remarkable controlled release capabilities. The inherent properties of microspheres, with respect to size and structure, endow them with the ability to form tiny porous network architectures. These architectures can serve as platforms for the delivery of growth factors, drugs, or nanoscale materials, thereby progressively emerging as fundamental constituents in the fabrication of tissue regeneration scaffolds. In the domain of neural tissue engineering, microspheres represent ideal carriers, as they are capable of furnishing multifactorial cues during nerve tissue repair. Such cues encompass the delivery of chemical signals essential for neuronal communication, the conveyance of biological factors conducive to axon outgrowth, and the responsiveness to physical stimulations. Nevertheless, a comprehensive and systematic work summary regarding the application of microspheres in neural tissue engineering remains scarce. Consequently, in this review, we initially conduct a systematic overview of the preparation methodologies, optimization strategies in terms of smart responsiveness, and characterization techniques of diverse microspheres. Additionally, we further consolidate the application of microsphere-based scaffolds in the remediation of nerve injuries, including traumatic brain injury, spinal cord injury, and peripheral nerve injury. Finally, the challenges and prospective directions pertaining to microspheres in tissue engineering are deliberated. The current work is anticipated to offer valuable references for the advancement of microspheres in the domain of various tissue engineering applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112363"},"PeriodicalIF":12.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578624","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}
Junwei Xu , Yi Cui , Xuemei Sun , Zhiheng Chen , Meili Liu , Xiaogang Wang , Ping Li , Yubo Fan
{"title":"Continuous magnetic-gradient hydrogel with augmented mechanical span and reverse-directional polysaccharides distribution for integrated repair of osteochondral defects","authors":"Junwei Xu , Yi Cui , Xuemei Sun , Zhiheng Chen , Meili Liu , Xiaogang Wang , Ping Li , Yubo Fan","doi":"10.1016/j.compositesb.2025.112361","DOIUrl":"10.1016/j.compositesb.2025.112361","url":null,"abstract":"<div><div>Natural osteochondral structure exhibits a continuous mechanical gradient that reflects the distinct mechanical properties of cartilage and bone. However, few continuous gradient casting methods can fabricate gradient scaffolds that match the mechanical span of natural osteochondral tissue for repairing full-thickness osteochondral defects. This study presents a continuous magnetic-gradient hydrogel with augmented mechanical span, developed through magnetic field-induced casting and post-modification techniques, for integrated repair of osteochondral defects. Through post-modification crosslinking, the hydrogel's mechanical span reaches two orders of magnitude, which is closer to the physiological gradient of cartilage to cancellous bone. Additionally, based on the natural polysaccharide characteristics of cartilage, two traditional Chinese medicine polysaccharides (oxidized Cuscuta chinensis polysaccharide and astragalus polysaccharide) are incorporated to create reverse-gradient that promote cartilage and bone tissue repair. Coupled with the hydrogel's magnetic gradient, an external gradient magnetic field is applied to further enhance the repair effects. Experimental results, both <em>in vitro</em> and <em>in vivo</em>, demonstrate that mechanical span augmented continuous magnetic-gradient hydrogel significantly facilitates the integrated repair of osteochondral defects. This work proposes a novel strategy to augment the mechanical span characteristic of continuous gradient hydrogel, resulting in a biomimetic scaffold that closely mimics the mechanical span properties of natural osteochondral tissue.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112361"},"PeriodicalIF":12.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552820","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":"Mesoscale simulation of C–S–H creep and stress relaxation by discrete element modelling","authors":"Zhe Zhang, Zhongbo Yuan, Guoqing Geng","doi":"10.1016/j.compositesb.2025.112360","DOIUrl":"10.1016/j.compositesb.2025.112360","url":null,"abstract":"<div><div>Creep and stress relaxation are time-dependent phenomena that deteriorate concrete structures, primarily occurring in calcium silicate hydrate, the key binder in Portland cement. Evaluating microstructure development during creep is challenging due to long testing durations. This study employs a novel discrete element method to model creep and stress relaxation in C–S–H, enabling microstructure evolution exploration. The simulation results align well with nanoindentation tests, allowing identification of key factors influencing creep. A microstructure-induced machine learning model is developed to describe the relationship between microstructure and creep deformation to assess the importance of various microstructure indices. This study directly verifies the mechanism by which high pressure accelerates the creep in nanoindentation tests. The influence of microstructure indices on creep is quantitatively analysed, revealing that penetration depth resulting from reduced modulus has the strongest correlation with creep. A detailed analysis of surface forces offers valuable insights for designing experiments and optimizing material properties.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112360"},"PeriodicalIF":12.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cationic defect engineering induces LOM-enhanced electrocatalysts derived from in situ semi-transformed NiFe-LDH/MOF heterostructure for efficient overall water-splitting","authors":"Yu Zhu, Yun Zhao, Chang Xi, Kairan Hu, Sheng Han, Jibo Jiang","doi":"10.1016/j.compositesb.2025.112356","DOIUrl":"10.1016/j.compositesb.2025.112356","url":null,"abstract":"<div><div>Unraveling the lattice oxygen mechanism (LOM) pathway and its association with inherent electrocatalytic performance is key to designing electrocatalyst for water-splitting but unfortunately remains elusive. Herein, a 3D nanoflower-like NiFe-LDH/MOF heterostructured electrocatalyst based on MXene is successfully prepared by an in situ semi-transformation (ISST) strategy. Chemical probe tests and pH-dependent tests indicate that the introduction of defects in the catalysts reduce the energy of the metal-oxygen bond and promote the release of lattice oxygen during the OER process, further enhancing the LOM pathway. Density Functional Theory (DFT) calculations also demonstrated that electronic coupling at heterogeneous interfaces and defect engineering optimised the adsorption process of the reaction intermediates and markedly improved the intrinsic catalytic activity. As expected, the catalysts exhibited good electrochemical performance, with HER and OER requiring only 143 mV and 176 mV. In addition, the overall water-splitting tests indicate that merely 1.55 V of cell voltage is needed for the catalyst to attain a current density of 10 mA cm<sup>−2</sup>. Excellent stability is also observed at high current densities, demonstrating its potential to be used as a bifunctional catalyst for large-scale industrialized applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112356"},"PeriodicalIF":12.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562823","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}
Chongjing Zhang , En Xie , Zeyuan Zhong , Fan Wang , Shangyu Xie , Shaohui Huang , Dejian Li , Ping Sun , Baoqing Yu
{"title":"Corrigendum to “Incorporation of tantalum into PEEK and grafting of berbamine facilitate osteoblastogenesis for enhancing osseointegration and inhibit osteoclastogenesis for preventing aseptic loosening” [Compos Part B: Eng, 296 (2025) 112242]","authors":"Chongjing Zhang , En Xie , Zeyuan Zhong , Fan Wang , Shangyu Xie , Shaohui Huang , Dejian Li , Ping Sun , Baoqing Yu","doi":"10.1016/j.compositesb.2025.112349","DOIUrl":"10.1016/j.compositesb.2025.112349","url":null,"abstract":"","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"296 ","pages":"Article 112349"},"PeriodicalIF":12.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Loren Morgillo , Alessia Melelli , Mario Scheel , Raymond Wightman , Timm Weitkamp , Camille Goudenhooft , Anita Quiles , Darshil U. Shah , Marwa Abida , Johnny Beaugrand , Alain Bourmaud
{"title":"Inside the kink-bands of archaeological flax artefacts via sub-micrometer resolution micro-CT: A comprehensive microstructural analysis to better understand degradation mechanisms of fibres","authors":"Loren Morgillo , Alessia Melelli , Mario Scheel , Raymond Wightman , Timm Weitkamp , Camille Goudenhooft , Anita Quiles , Darshil U. Shah , Marwa Abida , Johnny Beaugrand , Alain Bourmaud","doi":"10.1016/j.compositesb.2025.112347","DOIUrl":"10.1016/j.compositesb.2025.112347","url":null,"abstract":"<div><div>This work explores how the morphology of kink-band zones in flax fibres impacts the mechanical properties of the elementary fibres. Kink-bands are structural defects and are particularly sensitive to physical and biological stresses, on isolated fibres or in bio-based composite materials. To this end, a panel of archaeological samples from different time periods and preserved under different environmental conditions were selected and studied using synchrotron micro-tomography. It is demonstrated that although kink-bands are generally more numerous in ancient fibres, their degree of severity is sometimes less. This underlines the importance of fibre extraction methods, which are principally responsible for kink-band formation. The results also show that kink-band are weaknesses points, allowing rapid development of internal porosity (up to 25 %) when the fibres are used or stored in extreme environments, and that this porosity can also extend to healthy areas of the fibres. However, in some cases, even after millennia of conservation, it appears that the fibres can present morphologies comparable to modern samples, probably due to their good initial quality. Thanks to the findings of the present work, simplified schemes of degradation in kink-band zones, useable on single fibres but also in composite materials, are proposed. These results confirm the importance of fibre extraction processes on fibre quality and durability, and subsequent use for sustainable and high-performance composite materials and textiles.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112347"},"PeriodicalIF":12.7,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adam D. Whitehouse , Yifei Yang , Victor Médeau , Lorenzo Mencattelli , James Finlayson , Silvestre T. Pinho
{"title":"A bio-inspired integrated composite stiffened panel for debonding prevention manufactured via AFP","authors":"Adam D. Whitehouse , Yifei Yang , Victor Médeau , Lorenzo Mencattelli , James Finlayson , Silvestre T. Pinho","doi":"10.1016/j.compositesb.2025.112321","DOIUrl":"10.1016/j.compositesb.2025.112321","url":null,"abstract":"<div><div>Composite stiffened panels are a mass effective solution to provide structural stiffness and stability. Traditional designs are vulnerable to unstable debonding failure of the stiffeners from the skin, contributing to conservative certification requirements being necessary, which increases structural mass. In this work we propose a design, inspired by damage tolerant tree-branch attachments, to embed the stiffener to the skin to eliminate this premature failure mechanism. Automated fibre placement (AFP) is increasingly used in industry to manufacture composites, and in this work we develop a manufacturing route for composite stiffened panels, skin and stiffener, to be manufactured in a single AFP process. This is a desirable manufacturing route that additionally enables the realisation of damage tolerant designs such as that presented in this work. Three-point-bend testing reveals that whilst a traditional design suffers premature unstable stiffener debonding failure, the bio-inspired design prevents this failure mechanism. Our results show that this unlocks a 78% increase in peak load, and drastic improvements to failure stability and energy absorption capabilities. This work demonstrates that embedding of the stiffener into the skin can address the problematic failure of unstable stiffener debonding, and can be achieved with an industrially relevant manufacturing route.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112321"},"PeriodicalIF":12.7,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuanzhe Zhang , Xianfeng Wang , Zhihui Zhu , Wentao Yang , Guangming Zhu , Feng Xing
{"title":"Fabrication of organic-inorganic double-walled (ER@EC/SiO2) microcapsules via biomimetic mineralization for self-healing cementitious materials","authors":"Xuanzhe Zhang , Xianfeng Wang , Zhihui Zhu , Wentao Yang , Guangming Zhu , Feng Xing","doi":"10.1016/j.compositesb.2025.112355","DOIUrl":"10.1016/j.compositesb.2025.112355","url":null,"abstract":"<div><div>The performance of self-healing cementitious materials can be enhanced by improving the interfacial transition zone (ITZ) between microcapsules and cementitious materials. Silicon dioxide (SiO<sub>2</sub>), which serves as the outer wall material of microcapsules, can enhance the ITZ performance and strengthen the cementitious material matrix. In this study, organic-inorganic double-walled microcapsules were synthesized through the biomimetic mineralization method. The core material consisted of epoxy resin (ER), while the inner wall was made of ethyl cellulose (EC). The outer wall was composed of SiO<sub>2</sub>. The morphology, ζ-potential value, chemical structure, thermal stability, mechanical properties, triggering properties, and self-healing capabilities were characterized. The effect of biomimetic mineralization was confirmed. The results showed that the microcapsules exhibited a regular spherical shape with a rough surface and a distinct inorganic wall structure. The macromolecule inducer polyethyleneimine (PEI) and anionic ethyl cellulose formed a macromolecule-anion complex. The microcapsules showcased triggering properties in simulated pore solutions of cementitious material. Montmorillonite-modified double-walled microcapsules with SiO<sub>2</sub> as the outer wall (MDMSiO<sub>2</sub>) exhibited remarkable self-healing performance, achieving a maximum recovery rate of 94.1 %. The addition of MDMSiO<sub>2</sub> to cementitious materials resulted in a significant increase in material strength (31.58 %) after three days. The synergistic effect of biomimetic mineralization and first-principles calculations suggested that this approach can effectively guide the deposition of inorganic substances and reduce their reaction energy barriers, underscoring the potential to enhance the performance of cementitious materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112355"},"PeriodicalIF":12.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578107","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}