Composites Part B: Engineering最新文献

SrCO3@PCL/PDA composite scaffold promote osteoporotic bone regeneration through immune regulation

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-14 DOI: 10.1016/j.compositesb.2025.112406

Jianhang Du , Xiaogang Bao , Jing Wen , Chen Tang , Chenxu Wang , Changgui Shi , Chengqing Yi , Guohua Xu , Dejian Li

Bone defects caused by osteoporosis present a significant clinical challenge. The primary obstacles to osteoporotic bone regeneration are the persistent decline in osteogenic differentiation potential of bone marrow mesenchymal stem cells (BMSCs) and the abnormally high activity of osteoclasts. Emerging research highlights the crucial role of immunomodulation in osteoporosis. Harnessing the immunomodulatory capabilities of bioactive materials to improve the compromised osteoporotic microenvironment may enhance the osteogenic differentiation potential of BMSCs while reducing osteoclast differentiation and resorption. This strategy offers promising avenues for treating osteoporotic bone defects. In this study, we developed an innovative 3D-printed SrCO₃@PCL/PDA composite scaffold. Through 3D printing, the polycaprolactone (PCL) matrix was customized to achieve biomimetic structural and mechanical design. The introduced strontium carbonate (SrCO₃) allows for the responsive release of Sr²⁺ ions in the acidic osteoporotic microenvironment, suppressing osteoclast activity and maintaining a regenerative-friendly environment. The polydopamine (PDA) coating enhances the biocompatibility of the scaffold, thereby promoting cell adhesion and proliferation on its surface. Notably, this novel composite scaffold effectively promotes macrophage polarization towards the M2 phenotype rather than the M1 phenotype, exerting an immunomodulatory effect that improves osteoporotic bone regeneration. In vivo experiments further validated our hypothesis. This innovative composite scaffold offers a promising strategy for the comprehensive treatment of osteoporotic bone defects.

{"title":"SrCO3@PCL/PDA composite scaffold promote osteoporotic bone regeneration through immune regulation","authors":"Jianhang Du , Xiaogang Bao , Jing Wen , Chen Tang , Chenxu Wang , Changgui Shi , Chengqing Yi , Guohua Xu , Dejian Li","doi":"10.1016/j.compositesb.2025.112406","DOIUrl":"10.1016/j.compositesb.2025.112406","url":null,"abstract":"<div><div>Bone defects caused by osteoporosis present a significant clinical challenge. The primary obstacles to osteoporotic bone regeneration are the persistent decline in osteogenic differentiation potential of bone marrow mesenchymal stem cells (BMSCs) and the abnormally high activity of osteoclasts. Emerging research highlights the crucial role of immunomodulation in osteoporosis. Harnessing the immunomodulatory capabilities of bioactive materials to improve the compromised osteoporotic microenvironment may enhance the osteogenic differentiation potential of BMSCs while reducing osteoclast differentiation and resorption. This strategy offers promising avenues for treating osteoporotic bone defects. In this study, we developed an innovative 3D-printed SrCO<sub>3</sub>@PCL/PDA composite scaffold. Through 3D printing, the polycaprolactone (PCL) matrix was customized to achieve biomimetic structural and mechanical design. The introduced strontium carbonate (SrCO<sub>3</sub>) allows for the responsive release of Sr<sup>2+</sup> ions in the acidic osteoporotic microenvironment, suppressing osteoclast activity and maintaining a regenerative-friendly environment. The polydopamine (PDA) coating enhances the biocompatibility of the scaffold, thereby promoting cell adhesion and proliferation on its surface. Notably, this novel composite scaffold effectively promotes macrophage polarization towards the M2 phenotype rather than the M1 phenotype, exerting an immunomodulatory effect that improves osteoporotic bone regeneration. In vivo experiments further validated our hypothesis. This innovative composite scaffold offers a promising strategy for the comprehensive treatment of osteoporotic bone defects.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112406"},"PeriodicalIF":12.7,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637590","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}

引用次数: 0

Succinic acid-based biodegradable hydrogels drive Bv2 microglial polarization by ATP metabolism

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-14 DOI: 10.1016/j.compositesb.2025.112383

Jingwen Zhao, Yiling Xiong, Xinying Wang, Yao Wang, Jing He, Fang Wu

Effective regenerative strategies for spinal cord injury (SCI) depend on promoting neuronal regeneration and suppressing inflammation, both requiring substantial energy. Succinic acid-based materials have attracted attention for enhancing cellular energy through the tricarboxylic acid (TCA) cycle and mitochondrial electron transport. However, succinic potential to exacerbate inflammation complicates therapeutic use, making it crucial to understand how these materials regulate microglial polarization. Here, we presented a degradable bioenergy hydrogel system by integrating succinic acid (SA) into chitosan (CS), yielding an energy-active unit. Upon implantation, degradation of chitosan released energy-active units, which were transported into Bv2 microglial cells via SLC13A3, thereby engaging mitochondrial electron transport chain and the TCA cycle. At optimized concentrations, these energy-active units facilitated M2 polarization of Bv2 cells, augmenting adenosine triphosphate (ATP) levels and driving anti-inflammatory factor expression to support tissue repair. Conversely, excess concentrations triggered mitochondrial reverse electron transport, elevating reactive oxygen species (ROS) production, impairing ATP synthase, and enhancing pro-inflammatory factor release via SLC25A10-mediated succinate export. This concentration-dependent effect underscores the nuanced role of succinic acid in modulating microglial polarization states. Furthermore, degradation of CSSA fragments activated the AMPK-mTOR and cAMP signaling pathways, significantly boosting ATP synthesis and fostering M2 microglial polarization. Our findings offer a novel avenue to enhance SCI repair by modulating cellular energy balance and refining the inflammatory milieu, while establishing critical concentration parameters for the deployment of succinic acid-based biomaterials in tissue regeneration contexts.

{"title":"Succinic acid-based biodegradable hydrogels drive Bv2 microglial polarization by ATP metabolism","authors":"Jingwen Zhao, Yiling Xiong, Xinying Wang, Yao Wang, Jing He, Fang Wu","doi":"10.1016/j.compositesb.2025.112383","DOIUrl":"10.1016/j.compositesb.2025.112383","url":null,"abstract":"<div><div>Effective regenerative strategies for spinal cord injury (SCI) depend on promoting neuronal regeneration and suppressing inflammation, both requiring substantial energy. Succinic acid-based materials have attracted attention for enhancing cellular energy through the tricarboxylic acid (TCA) cycle and mitochondrial electron transport. However, succinic potential to exacerbate inflammation complicates therapeutic use, making it crucial to understand how these materials regulate microglial polarization. Here, we presented a degradable bioenergy hydrogel system by integrating succinic acid (SA) into chitosan (CS), yielding an energy-active unit. Upon implantation, degradation of chitosan released energy-active units, which were transported into Bv2 microglial cells via SLC13A3, thereby engaging mitochondrial electron transport chain and the TCA cycle. At optimized concentrations, these energy-active units facilitated M2 polarization of Bv2 cells, augmenting adenosine triphosphate (ATP) levels and driving anti-inflammatory factor expression to support tissue repair. Conversely, excess concentrations triggered mitochondrial reverse electron transport, elevating reactive oxygen species (ROS) production, impairing ATP synthase, and enhancing pro-inflammatory factor release via SLC25A10-mediated succinate export. This concentration-dependent effect underscores the nuanced role of succinic acid in modulating microglial polarization states. Furthermore, degradation of CSSA fragments activated the AMPK-mTOR and cAMP signaling pathways, significantly boosting ATP synthesis and fostering M2 microglial polarization. Our findings offer a novel avenue to enhance SCI repair by modulating cellular energy balance and refining the inflammatory milieu, while establishing critical concentration parameters for the deployment of succinic acid-based biomaterials in tissue regeneration contexts.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112383"},"PeriodicalIF":12.7,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643001","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}

引用次数: 0

A comparative analysis of quasi-static indentation and low-velocity impact on the free edges of CFRP composite laminates 准静态压痕和低速冲击对 CFRP 复合材料层压板自由边缘的影响对比分析

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-13 DOI: 10.1016/j.compositesb.2025.112395

Nian Li , Jian Du , Rui Liu , Hsiao Mun Lee , Heow Pueh Lee

A comparative study was conducted to evaluate the feasibility of using quasi-static indentation for characterizing the dynamic behavior of CFRP laminated composites subjected to free edge-on impact, focusing on both damage resistance and tolerance. Inspection methods, including ultrasonic C-scanning, 3D X-ray CT reconstruction, in-situ DIC measurement, etc., were utilized to examine damage status and mechanical responses induced by quasi-static edge-on indentation, dynamic edge-on impact and subsequent compression. The analysis revealed comparable failure mechanisms underlying the quasi-static and dynamic testing: wedge-shaped debris and bending fracture of the sub-laminates. In compression, local buckling of sub-laminates caused delamination propagation, ultimately resulting in structural collapse due to fiber fracture. Quasi-static testing provided a good approximation of dynamic edge-on force-displacement behavior without force signal oscillations. A compressive strength reduction of approximately 30 %, for barely visible impact damage (BVID) induced by edge-on loading, emphasized the significance of edge-on impact damage tolerance, where the more accessible quasi-static method could be employed.

{"title":"A comparative analysis of quasi-static indentation and low-velocity impact on the free edges of CFRP composite laminates","authors":"Nian Li , Jian Du , Rui Liu , Hsiao Mun Lee , Heow Pueh Lee","doi":"10.1016/j.compositesb.2025.112395","DOIUrl":"10.1016/j.compositesb.2025.112395","url":null,"abstract":"<div><div>A comparative study was conducted to evaluate the feasibility of using quasi-static indentation for characterizing the dynamic behavior of CFRP laminated composites subjected to free edge-on impact, focusing on both damage resistance and tolerance. Inspection methods, including ultrasonic C-scanning, 3D X-ray CT reconstruction, in-situ DIC measurement, etc., were utilized to examine damage status and mechanical responses induced by quasi-static edge-on indentation, dynamic edge-on impact and subsequent compression. The analysis revealed comparable failure mechanisms underlying the quasi-static and dynamic testing: wedge-shaped debris and bending fracture of the sub-laminates. In compression, local buckling of sub-laminates caused delamination propagation, ultimately resulting in structural collapse due to fiber fracture. Quasi-static testing provided a good approximation of dynamic edge-on force-displacement behavior without force signal oscillations. A compressive strength reduction of approximately 30 %, for barely visible impact damage (BVID) induced by edge-on loading, emphasized the significance of edge-on impact damage tolerance, where the more accessible quasi-static method could be employed.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112395"},"PeriodicalIF":12.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637564","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}

引用次数: 0

Facile method to enhance the optical properties of transparent glass fiber-reinforced epoxy composites by controlling the curing agent content ratio 通过控制固化剂含量比提高透明玻璃纤维增强环氧树脂复合材料光学性能的简便方法

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-12 DOI: 10.1016/j.compositesb.2025.112402

Dong-Kyu Kim , Young Ho Choi , Kwan-Woo Kim , Byung-Joo Kim

In this study, the refractive index of epoxy resin was adjusted according to the mixing ratio of two types of curing agents, namely 4,4′-diaminodiphenylmethane and poly(propylene glycol) bis(2-aminopropyl ether). The optical properties of the cured pure polymers and transparent glass fiber-reinforced plastics (GFRP)¹ (analyzed with an ultraviolet–visible spectrophotometer) were compared. Epoxy (EP)/P9D1-F exhibited excellent optical properties (transmittance of 89.54 % and a haze of 9.30 %). The small refractive index difference between EP/P9D1 and glass fiber reduced the phase delay and fabricated high-transmittance, transparent GFRP. In addition, EP/P9D1-F exhibited superior mechanical properties, with enhanced flexural strength and fracture toughness owing to the improved stress distribution between the fiber and matrix. These findings suggest that a transparent GFRP with high transmittance and glass-like optical properties, as well as excellent mechanical performance, can be fabricated by appropriately mixing and adjusting two or more types of curing agents.

{"title":"Facile method to enhance the optical properties of transparent glass fiber-reinforced epoxy composites by controlling the curing agent content ratio","authors":"Dong-Kyu Kim , Young Ho Choi , Kwan-Woo Kim , Byung-Joo Kim","doi":"10.1016/j.compositesb.2025.112402","DOIUrl":"10.1016/j.compositesb.2025.112402","url":null,"abstract":"<div><div>In this study, the refractive index of epoxy resin was adjusted according to the mixing ratio of two types of curing agents, namely 4,4′-diaminodiphenylmethane and poly(propylene glycol) bis(2-aminopropyl ether). The optical properties of the cured pure polymers and transparent glass fiber-reinforced plastics (GFRP)<sup>1</sup> (analyzed with an ultraviolet–visible spectrophotometer) were compared. Epoxy (EP)/P9D1-F exhibited excellent optical properties (transmittance of 89.54 % and a haze of 9.30 %). The small refractive index difference between EP/P9D1 and glass fiber reduced the phase delay and fabricated high-transmittance, transparent GFRP. In addition, EP/P9D1-F exhibited superior mechanical properties, with enhanced flexural strength and fracture toughness owing to the improved stress distribution between the fiber and matrix. These findings suggest that a transparent GFRP with high transmittance and glass-like optical properties, as well as excellent mechanical performance, can be fabricated by appropriately mixing and adjusting two or more types of curing agents.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112402"},"PeriodicalIF":12.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629929","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}

引用次数: 0

Tailoring of crystal size and significant enhancement of physical property, ductility and toughness in in-situ nano kraft lignin/nano-fibrillated cellulose biocomposite

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-12 DOI: 10.1016/j.compositesb.2025.112400

Majed Parvan , Vijay Singh Parihar , Minna Kellomäki , Mrityunjoy Mahato , Rama Layek

An aqueous dispersion of nano-fibrillated cellulose (NFC) biocomposite solution with colloidal kraft lignin (CKL) particles ranging from 0 to 5 wt% was produced by preparing in-situ CKL in the aqueous dispersion of NFC. The CKL/NFC dispersions were vacuum filtered to remove excess water and then dried at 70 °C for 5 min using compression molding to obtain free-standing CKL/NFC composite films. The CKL particles remained homogeneously dispersed on the NFC fibril surfaces, forming hydrogen bonds with the hydroxyl groups of the NFC chain, which led to in-situ CKL-directed crystallization as well as nano-reinforcement. X-ray diffraction studies confirmed that the crystal size of the NFC molecules increased with the integration of in-situ CKL particles. Consequently, the CKL/NFC composite films demonstrated significant enhancement of tensile strength, elongation at break, and toughness. Additionally, CKL/NFC composite films exhibited outstanding thermal stability, UV-shielding, and antioxidant properties. These findings suggest that CKL/NFC biocomposite films could be suitable for structural and engineering composite materials, consumer products, and packaging applications.

{"title":"Tailoring of crystal size and significant enhancement of physical property, ductility and toughness in in-situ nano kraft lignin/nano-fibrillated cellulose biocomposite","authors":"Majed Parvan , Vijay Singh Parihar , Minna Kellomäki , Mrityunjoy Mahato , Rama Layek","doi":"10.1016/j.compositesb.2025.112400","DOIUrl":"10.1016/j.compositesb.2025.112400","url":null,"abstract":"<div><div>An aqueous dispersion of nano-fibrillated cellulose (NFC) biocomposite solution with colloidal kraft lignin (CKL) particles ranging from 0 to 5 wt% was produced by preparing in-situ CKL in the aqueous dispersion of NFC. The CKL/NFC dispersions were vacuum filtered to remove excess water and then dried at 70 °C for 5 min using compression molding to obtain free-standing CKL/NFC composite films. The CKL particles remained homogeneously dispersed on the NFC fibril surfaces, forming hydrogen bonds with the hydroxyl groups of the NFC chain, which led to in-situ CKL-directed crystallization as well as nano-reinforcement. X-ray diffraction studies confirmed that the crystal size of the NFC molecules increased with the integration of in-situ CKL particles. Consequently, the CKL/NFC composite films demonstrated significant enhancement of tensile strength, elongation at break, and toughness. Additionally, CKL/NFC composite films exhibited outstanding thermal stability, UV-shielding, and antioxidant properties. These findings suggest that CKL/NFC biocomposite films could be suitable for structural and engineering composite materials, consumer products, and packaging applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112400"},"PeriodicalIF":12.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629396","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}

引用次数: 0

Effect of loading on water distribution and migration characteristics of hardened cement paste with different water content 加载对不同含水量硬化水泥浆水分分布和迁移特性的影响

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-12 DOI: 10.1016/j.compositesb.2025.112370

Zhipeng Huang , Yuzhu Yang , Jianhui Liu , Leping Liu , Zheng Chen , Caijun Shi

The service life of concrete structures is significantly influenced by the coupled effects of mechanical forces and environmental conditions, with axial pressure and environmental humidity being two of the most prevalent factors. Despite extensive research, the water migration behavior of hardened cement paste (HCP) with varying water content under axial pressure remains poorly understood. This study introduces a novel axial pressure-controlled Hydrogen Nuclear Magnetic Resonance (¹H NMR) system, investigating in-situ monitoring of strain changes and water distribution in HCP with different water contents during loading at various stress levels. The results showed that a reduction in water content would reduce the interlayer spacing of C–S–H, thereby increasing the densification of C–S–H gel and enhancing the mechanical properties of cement-based materials. The critical sliding point between C–S–H layers occurs at an average interlayer spacing of 1.89 nm. Under axial compressive loading, the C–S–H gel is compressed, causing some gel pores to reorganize into interlayer pores. Consequently, the interlayer water content increases while the gel water content decreases. As the stress level rises, the interlayer water content gradually increases, reaching its maximum when the stress level equals or exceeds the critical stress. At this point, the water migration behavior transitions from fully reversible to partially reversible. These findings provide valuable insights into the coupled effects of mechanical loading and water migration in HCP, which are crucial for predicting the long-term performance and durability of concrete structures in diverse environmental conditions.

混凝土结构的使用寿命受到机械力和环境条件的共同影响，其中轴向压力和环境湿度是两个最主要的因素。尽管进行了广泛的研究，但人们对不同含水量的硬化水泥浆（HCP）在轴压作用下的水迁移行为仍然知之甚少。本研究引入了一种新型轴向压力控制氢核磁共振（1H NMR）系统，研究了在不同应力水平下加载不同含水量的 HCP 时应变变化和水分分布的原位监测。结果表明，降低含水量会减小 C-S-H 的层间间距，从而提高 C-S-H 凝胶的致密性，增强水泥基材料的机械性能。C-S-H 层间的临界滑动点出现在平均层间距为 1.89 nm 时。在轴向压缩载荷作用下，C-S-H 凝胶受到压缩，导致部分凝胶孔隙重组为层间孔隙。因此，层间含水量增加，而凝胶含水量减少。随着应力水平的升高，层间含水量逐渐增加，当应力水平等于或超过临界应力时达到最大值。此时，水迁移行为从完全可逆转变为部分可逆。这些发现为了解 HCP 中机械荷载和水迁移的耦合效应提供了宝贵的见解，对于预测混凝土结构在不同环境条件下的长期性能和耐久性至关重要。

{"title":"Effect of loading on water distribution and migration characteristics of hardened cement paste with different water content","authors":"Zhipeng Huang , Yuzhu Yang , Jianhui Liu , Leping Liu , Zheng Chen , Caijun Shi","doi":"10.1016/j.compositesb.2025.112370","DOIUrl":"10.1016/j.compositesb.2025.112370","url":null,"abstract":"<div><div>The service life of concrete structures is significantly influenced by the coupled effects of mechanical forces and environmental conditions, with axial pressure and environmental humidity being two of the most prevalent factors. Despite extensive research, the water migration behavior of hardened cement paste (HCP) with varying water content under axial pressure remains poorly understood. This study introduces a novel axial pressure-controlled Hydrogen Nuclear Magnetic Resonance (<sup>1</sup>H NMR) system, investigating in-situ monitoring of strain changes and water distribution in HCP with different water contents during loading at various stress levels. The results showed that a reduction in water content would reduce the interlayer spacing of C–S–H, thereby increasing the densification of C–S–H gel and enhancing the mechanical properties of cement-based materials. The critical sliding point between C–S–H layers occurs at an average interlayer spacing of 1.89 nm. Under axial compressive loading, the C–S–H gel is compressed, causing some gel pores to reorganize into interlayer pores. Consequently, the interlayer water content increases while the gel water content decreases. As the stress level rises, the interlayer water content gradually increases, reaching its maximum when the stress level equals or exceeds the critical stress. At this point, the water migration behavior transitions from fully reversible to partially reversible. These findings provide valuable insights into the coupled effects of mechanical loading and water migration in HCP, which are crucial for predicting the long-term performance and durability of concrete structures in diverse environmental conditions.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112370"},"PeriodicalIF":12.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637589","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}

引用次数: 0

FFF-based 3D printing path design of interconnected microchannel network inside continuous fibre-reinforced composites for thermal manipulation

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-11 DOI: 10.1016/j.compositesb.2025.112391

Nanya Li , Changkun Sun , Yongzhi Lu , Jiaming Zhang , Jidong Li

Microchannel networks present remarkable advantages in the field of thermal management and significantly boost performance by augmenting the heat transfer capabilities of composite materials. In this study, a pioneering 3D printing path design technique based on FFF (Fused Filament Fabrication) is introduced. This innovative method enables the fabrication of microchannel networks within continuous fibre-reinforced thermoplastic (CFRTP) composites without severing the fibres. Unlike traditional micro-drilling or wire embedding techniques, it has the potential to form elliptical holes with precisely oriented continuous fibres that conform to load transmission paths. Experimental results indicate that this approach can reduce the strain concentration factor of conventional circular holes by a substantial 70 %. Additionally, the printing paths of multiple layers are synchronized to intricately construct interconnected and bifurcated Y-shaped microchannel networks. The integration of GaInTi liquid metal within these microchannels has led to a notable 49 % enhancement in the thermal conductivity of CFRTP samples, even though the microchannel areas constitute only 1/1076 of the entire 700 mm² testing area.

{"title":"FFF-based 3D printing path design of interconnected microchannel network inside continuous fibre-reinforced composites for thermal manipulation","authors":"Nanya Li , Changkun Sun , Yongzhi Lu , Jiaming Zhang , Jidong Li","doi":"10.1016/j.compositesb.2025.112391","DOIUrl":"10.1016/j.compositesb.2025.112391","url":null,"abstract":"<div><div>Microchannel networks present remarkable advantages in the field of thermal management and significantly boost performance by augmenting the heat transfer capabilities of composite materials. In this study, a pioneering 3D printing path design technique based on FFF (Fused Filament Fabrication) is introduced. This innovative method enables the fabrication of microchannel networks within continuous fibre-reinforced thermoplastic (CFRTP) composites without severing the fibres. Unlike traditional micro-drilling or wire embedding techniques, it has the potential to form elliptical holes with precisely oriented continuous fibres that conform to load transmission paths. Experimental results indicate that this approach can reduce the strain concentration factor of conventional circular holes by a substantial 70 %. Additionally, the printing paths of multiple layers are synchronized to intricately construct interconnected and bifurcated Y-shaped microchannel networks. The integration of GaInTi liquid metal within these microchannels has led to a notable 49 % enhancement in the thermal conductivity of CFRTP samples, even though the microchannel areas constitute only 1/1076 of the entire 700 mm<sup>2</sup> testing area.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112391"},"PeriodicalIF":12.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619735","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}

引用次数: 0

Multi-material 3D printing of continuous carbon fibre reinforced thermoset composites with tailored fibre paths and bespoke conforming thermoplastic moulds

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112373

Haoqi Zhang , Aonan Li , Jiang Wu , Dongmin Yang

This paper proposes a novel additive manufacturing approach for rapid, integrated fabrication of complex structures made from 3D-printed composites with low porosity and a high continuous fibre content. Continuous carbon fibre reinforced epoxy composites with >50 % fibre volume fraction were printed in parallel with short carbon fibre reinforced polyamide-6 (PA6) conforming moulds which have a melt temperature higher than the curing temperature of epoxy. The research further optimized the continuous fibre paths through experiments and as-manufactured finite element simulations, using 3D-printed truss structures under three-points bending as a case study. Additionally, the incorporation of polylactic acid (PLA) with a lower melting temperature, enhanced compatibility and bonding between the epoxy and PA6. The approach was applied and demonstrated for a lightweight composite wing box using tailored material interface and customised reinforcement alongside varying infill densities. This approach also opens up possibilities for assembling lightweight, large-scale composite structures using 3D-printed high-performance continuous carbon fibre units.

{"title":"Multi-material 3D printing of continuous carbon fibre reinforced thermoset composites with tailored fibre paths and bespoke conforming thermoplastic moulds","authors":"Haoqi Zhang , Aonan Li , Jiang Wu , Dongmin Yang","doi":"10.1016/j.compositesb.2025.112373","DOIUrl":"10.1016/j.compositesb.2025.112373","url":null,"abstract":"<div><div>This paper proposes a novel additive manufacturing approach for rapid, integrated fabrication of complex structures made from 3D-printed composites with low porosity and a high continuous fibre content. Continuous carbon fibre reinforced epoxy composites with >50 % fibre volume fraction were printed in parallel with short carbon fibre reinforced polyamide-6 (PA6) conforming moulds which have a melt temperature higher than the curing temperature of epoxy. The research further optimized the continuous fibre paths through experiments and as-manufactured finite element simulations, using 3D-printed truss structures under three-points bending as a case study. Additionally, the incorporation of polylactic acid (PLA) with a lower melting temperature, enhanced compatibility and bonding between the epoxy and PA6. The approach was applied and demonstrated for a lightweight composite wing box using tailored material interface and customised reinforcement alongside varying infill densities. This approach also opens up possibilities for assembling lightweight, large-scale composite structures using 3D-printed high-performance continuous carbon fibre units.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112373"},"PeriodicalIF":12.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610346","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}

引用次数: 0

A promising high-temperature oxygen barrier of ZrB2-HfSi2-TaSi2 coating for 1500 °C based on HfSi2-TaSi2 dual-transition-metal silicide alloying enhancement

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112384

Yuexing Chen , Xiang Ji , Peipei Wang , Zhichao Shang , Chengshan Ji , Zhengang Zhang , Philipp V. Kiryukhantsev-Korneev , Evgeny A. Levashov , Xuanru Ren , Peizhong Feng

To enhance the self-healing capability and high-temperature oxidation resistance of ZrB₂-silicon-based coatings, HfSi₂-TaSi₂ dual-transition metal silicide alloying reinforcement was used in ZrB₂-HfSi₂-TaSi₂ coatings, and the oxygen barrier reinforcement effect on different ratios of HfSi₂-TaSi₂ alloying compositions was investigated. The results demonstrate that the synergistic strengthening effect of HfSi₂-TaSi₂ dual silicide alloying significantly enhances the stability at high temperatures and the oxygen barrier performance of the coatings. Notably, the coating containing 30 vol% TaSi₂ exhibited optimal oxidation resistance, with a mass change rate reduction of 79.32 % and an oxygen permeability decrease of 93.75 %. This observed improvement in performance is attributed to the stabilization of the glassy structure through the action of TaSi₂ via a “network compensation” mechanism, which effectively inhibits the aggregation of oxide particles. However, an excess of TaSi₂ resulted in the depolymerization of the glassy film, diminishing its defect-healing capacity and leading to an increase in oxygen permeability to 0.53 %. This research provides new insights for the development of efficient oxidation-resistant coatings.

{"title":"A promising high-temperature oxygen barrier of ZrB2-HfSi2-TaSi2 coating for 1500 °C based on HfSi2-TaSi2 dual-transition-metal silicide alloying enhancement","authors":"Yuexing Chen , Xiang Ji , Peipei Wang , Zhichao Shang , Chengshan Ji , Zhengang Zhang , Philipp V. Kiryukhantsev-Korneev , Evgeny A. Levashov , Xuanru Ren , Peizhong Feng","doi":"10.1016/j.compositesb.2025.112384","DOIUrl":"10.1016/j.compositesb.2025.112384","url":null,"abstract":"<div><div>To enhance the self-healing capability and high-temperature oxidation resistance of ZrB<sub>2</sub>-silicon-based coatings, HfSi<sub>2</sub>-TaSi<sub>2</sub> dual-transition metal silicide alloying reinforcement was used in ZrB<sub>2</sub>-HfSi<sub>2</sub>-TaSi<sub>2</sub> coatings, and the oxygen barrier reinforcement effect on different ratios of HfSi<sub>2</sub>-TaSi<sub>2</sub> alloying compositions was investigated. The results demonstrate that the synergistic strengthening effect of HfSi<sub>2</sub>-TaSi<sub>2</sub> dual silicide alloying significantly enhances the stability at high temperatures and the oxygen barrier performance of the coatings. Notably, the coating containing 30 vol% TaSi<sub>2</sub> exhibited optimal oxidation resistance, with a mass change rate reduction of 79.32 % and an oxygen permeability decrease of 93.75 %. This observed improvement in performance is attributed to the stabilization of the glassy structure through the action of TaSi<sub>2</sub> via a “network compensation” mechanism, which effectively inhibits the aggregation of oxide particles. However, an excess of TaSi<sub>2</sub> resulted in the depolymerization of the glassy film, diminishing its defect-healing capacity and leading to an increase in oxygen permeability to 0.53 %. This research provides new insights for the development of efficient oxidation-resistant coatings.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112384"},"PeriodicalIF":12.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629926","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}

引用次数: 0

Optimization design of patterned rGO metasurface structures guided by electromagnetic simulation towards broadband electromagnetic wave absorption

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112378

Jiatong Li , Tian Li , Jiani Du, Jinzhe Li, Tinghao Liao, Fanbin Meng

The traditional approach to reducing the reflection loss (RL) of microwave absorption (MA) materials involves compositional design and microstructural design. Nevertheless, this method commonly struggles to attain the desired effective absorption bandwidth (EAB), consequently constraining its practicality. In the field of radar frequency electromagnetic waves, The comprehensive strategy of combining macroscopic structural design with material composition has been proven effective in achieving broadband absorption capacity. Herein, a patterned reduced graphene oxide (rGO) based metasurface structure through electromagnetic simulation guidance has been invented, which has the characteristics of lightweight, ultra wideband and efficient MA capability. Metasurface structure was designed by introducing homocentric square shape and cross shape into gradient structure, which were named as Top homocentric square-shaped structure (T-HS), Bottom cross-shaped type structure (B-CS) and Bottom homocentric square-shaped structure (B-HS). The impedance matching and attenuation capabilities were enhanced by mutual, multiple reflections and scattering among periodic units. Therefore, the materials attained more significant MA performance at the same thickness. The simulation results revealed that the structural designs adjust the resonance frequency, leading to the formation of dual absorption peaks at 9.29 GHz and 16.02 GHz, which significantly broadened the EAB to 10.49 GHz with the RL of −75.7 dB. Furthermore, The arch experimental test confirmed the effectiveness of patterned metasurface structure design, extending the EAB from 3.29 GHz to 12.85 GHz and the RL_max from −25.20 dB to −30.75 dB. The patterned rGO metamaterials hold great promise for application in broadband electromagnetic protection.

{"title":"Optimization design of patterned rGO metasurface structures guided by electromagnetic simulation towards broadband electromagnetic wave absorption","authors":"Jiatong Li , Tian Li , Jiani Du, Jinzhe Li, Tinghao Liao, Fanbin Meng","doi":"10.1016/j.compositesb.2025.112378","DOIUrl":"10.1016/j.compositesb.2025.112378","url":null,"abstract":"<div><div>The traditional approach to reducing the reflection loss (RL) of microwave absorption (MA) materials involves compositional design and microstructural design. Nevertheless, this method commonly struggles to attain the desired effective absorption bandwidth (EAB), consequently constraining its practicality. In the field of radar frequency electromagnetic waves, The comprehensive strategy of combining macroscopic structural design with material composition has been proven effective in achieving broadband absorption capacity. Herein, a patterned reduced graphene oxide (rGO) based metasurface structure through electromagnetic simulation guidance has been invented, which has the characteristics of lightweight, ultra wideband and efficient MA capability. Metasurface structure was designed by introducing homocentric square shape and cross shape into gradient structure, which were named as Top homocentric square-shaped structure (T-HS), Bottom cross-shaped type structure (B-CS) and Bottom homocentric square-shaped structure (B-HS). The impedance matching and attenuation capabilities were enhanced by mutual, multiple reflections and scattering among periodic units. Therefore, the materials attained more significant MA performance at the same thickness. The simulation results revealed that the structural designs adjust the resonance frequency, leading to the formation of dual absorption peaks at 9.29 GHz and 16.02 GHz, which significantly broadened the EAB to 10.49 GHz with the RL of −75.7 dB. Furthermore, The arch experimental test confirmed the effectiveness of patterned metasurface structure design, extending the EAB from 3.29 GHz to 12.85 GHz and the RL<sub>max</sub> from −25.20 dB to −30.75 dB. The patterned rGO metamaterials hold great promise for application in broadband electromagnetic protection.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112378"},"PeriodicalIF":12.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619653","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}

引用次数: 0