【新文速递】2024年4月19日复合材料SCI期刊最新文章_ACT_Mechanical_Additive_System_MAGNET_振动_断裂_复合材料_非线性_燃烧_化学_化机

【新文速递】2024年4月8日复合材料SCI期刊最新文章

今日更新：Composites Part A: Applied Science and Manufacturing 2 篇，Composites Part B: Engineering 1 篇，Composites Science and Technology 2 篇Composites Part A: Applied Science and ManufacturingUnveiling the cutting force of multiphase fibers and particle reinforced polymer matrix composites based on multiphase microstructure: An experimental and theoretical studyWeiwei Xu, Songmei Yuan, Qilin Li, Xiaoxing Gao, Wenzhao An, Liyu Wangdoi:10.1016/j.compositesa.2024.108199 基于多相微结构揭示多相纤维和颗粒增强聚合物基复合材料的切削力：实验与理论研究To prevent excessive damage caused by high cutting forces during the processing of multiphase fibers and particle reinforced polymer matrix composites (MFPRP), it is essential to accurately predict their cutting force. This paper introduces a novel cutting force model for multiphase fibers and particle reinforced polymer matrix composites based on multiphase microstructural characteristics. A series of models are established based on the unique distribution patterns of fiber bundles, particles, and matrix: including models for the matrix and glass particle cutting forces. Simultaneously, cutting force models for microscopic representative volume element (MRVE) are established based on fibers oriented in different directions. The overall cutting force model is derived by incorporating the longitudinal arrangement of materials and tool conditions. Finally, comparing predicted cutting forces with experimental data yields an average error of 6.17%, effectively predicting the magnitude of cutting forces in MFPRP and laying a foundation for cutting force regulation.为了防止多相纤维和颗粒增强聚合物基复合材料（MFPRP）在加工过程中因高切削力而造成过度损坏，必须准确预测其切削力。本文介绍了一种基于多相微结构特征的新型多相纤维和颗粒增强聚合物基复合材料切削力模型。根据纤维束、颗粒和基体的独特分布模式建立了一系列模型，包括基体和玻璃颗粒切削力模型。同时，根据纤维在不同方向的取向，建立了微观代表体积元素（MRVE）的切割力模型。结合材料的纵向排列和工具条件，得出整体切削力模型。最后，将预测的切削力与实验数据进行比较，得出平均误差为 6.17%，从而有效预测了 MFPRP 中的切削力大小，为切削力调节奠定了基础。Construction of interfacial interlocking structure in epoxy composites with enhanced mechanical performance and ultraviolet resistanceYin Yu, Dawei Xu, Qi Wangdoi:10.1016/j.compositesa.2024.108200 在环氧树脂复合材料中构建界面互锁结构，提高机械性能和抗紫外线性能Replacing carbon fibers with organic fibers to reinforce the polymer matrix has become a promising development direction in the preparation of structural composites owing to its low density and cost, but the mechanical performance of organic fibers restricts their further application. Herein, poly(vinyl alcohol) (PVA) fibers were utilized to reinforce the epoxy resin (EP) through the incorporation of zinc oxide nanoparticles (ZnO NPs) in PVA solution (PVAS), and high-strength composite for 122.3 MPa with interfacial interlocking structure was successfully fabricated via vacuum resin transfer molding (VARTM). ZnO NPs were coated on the PVA fibers and enhanced the surface roughness, which improved the mechanical performance of the composite. In comparison with untreated composites, the interlaminar shear strength (ILSS) of composites displayed a significant increase, from 99.4 MPa to 122.3 MPa, resulting from improved interfacial bonding and reduced interfacial gap. Simultaneously, the incorporation of ZnO NPs efficiently enhanced the ultraviolet (UV) resistance.用有机纤维代替碳纤维增强聚合物基体因其密度低、成本低而成为制备结构复合材料的一个有前途的发展方向，但有机纤维的机械性能限制了其进一步应用。本文通过在聚乙烯醇（PVA）溶液（PVAS）中加入氧化锌纳米粒子（ZnO NPs），利用聚乙烯醇（PVA）纤维增强环氧树脂（EP），并通过真空树脂传递模塑（VARTM）成功制备了具有界面交错结构的 122.3 MPa 高强度复合材料。在 PVA 纤维上涂覆 ZnO NPs 提高了表面粗糙度，从而改善了复合材料的机械性能。与未经处理的复合材料相比，复合材料的层间剪切强度（ILSS）有了显著提高，从 99.4 兆帕提高到 122.3 兆帕，这是由于界面粘合力提高和界面间隙减小所致。同时，ZnO NPs 的加入还有效增强了复合材料的抗紫外线（UV）性能。Composites Part B: EngineeringTensile damage evolution and mechanical behaviour of SiCf/SiC mini-composites through 4D in-situ micro-CT and data-driven modellingWeiyu Guo, Daxu Zhang, Yi Zhang, Yonglong Du, Chao Chendoi:10.1016/j.compositesb.2024.111439 通过四维原位显微 CT 和数据驱动建模研究 SiCf/SiC 微型复合材料的拉伸损伤演变和力学性能Damage evolution of SiCf/SiC ceramic matrix mini-composites (CMMCs) was characterised by using a 4D in-situ micro-computed tomography (CT) tensile test and digital volume correlation (DVC) technique. Additionally, a CT damage data-driven shear lag model was developed to predict its tensile stress-strain response. A 4D in-situ X-ray CT tensile test of a unidirectional SiCf/SiC mini-composite was first carried out. Then two ad-hoc deep-learning image segmentation models were developed to automatically identify its microstructure and damages induced by tension, respectively. Damage evolution was quantitively characterised by visualising the initiation and propagation of matrix cracks in three-dimensions (3D). A two-step approach was employed to evaluate its 3D internal strain distributions at various loading levels, which further revealed strain concentrations and helped establishing the tensile stress-strain response of the CMMCs. It was observed that transverse cracking is the predominant damage mode, and the average crack opening displacement increases with loading. A high-fidelity X-ray CT data-driven shear lag model was developed, incorporating inputs of transverse matrix crack spacing calculated by the 4D in-situ CT test data. The predicted stress-strain response showed a good correlation with the experimental results.通过使用四维原位微型计算机断层扫描（CT）拉伸试验和数字体积相关（DVC）技术，对 SiCf/SiC 陶瓷基微型复合材料（CMMC）的损伤演变进行了表征。此外，还开发了一种由 CT 损伤数据驱动的剪切滞后模型，用于预测其拉伸应力-应变响应。首先对单向 SiCf/SiC 微型复合材料进行了四维原位 X 射线 CT 拉伸试验。然后开发了两个临时深度学习图像分割模型，分别用于自动识别其微观结构和拉伸引起的损伤。通过可视化三维（3D）基体裂纹的产生和扩展，对损伤演变进行了定量表征。采用两步法评估了不同加载水平下的三维内部应变分布，进一步揭示了应变集中，有助于确定 CMMC 的拉伸应力应变响应。研究发现，横向开裂是最主要的破坏模式，裂缝张开的平均位移随加载而增加。通过输入由四维原位 CT 测试数据计算得出的横向矩阵裂缝间距，建立了高保真 X 射线 CT 数据驱动的剪切滞后模型。预测的应力-应变响应与实验结果显示出良好的相关性。Composites Science and TechnologyImproving the impact performance of natural fiber reinforced laminate through hybridization and layup designJ.L. Liu, V.N.H. Pham, L. Mencattelli, Enquan Chew, P.Y. Chua, J. Shen, K. Tian, Jie Zhi, D. Jiang, T.E. Tay, V.B.C. Tandoi:10.1016/j.compscitech.2024.110585 通过杂化和铺层设计提高天然纤维增强层压板的冲击性能There is growing interest in Natural Fiber Reinforced Polymer (NFRP) composites for structural components despite their lower mechanical performance than synthetic composites such as Glass Fiber Reinforced Polymer (GFRP) composite. This study demonstrates significant improvement in impact resistance of NFRP-GFRP hybrid laminates can be achieved through the integration of laminate layup design with interlaminar hybridization. By placing more GFRP plies near the top and bottom of the hybrid laminate while reducing the occurrence of neighbouring GFRP-GFRP plies and neighbouring NFRP-NFRP plies around the centre of the laminate, the impact resistance of the hybrid laminate can be significantly improved and even surpass GFRP laminates. On top of stacking sequence of plies, the impact resistance of the hybrid laminates can be further improved by introducing a bio-inspired helicoidal layup. The result shows that with 30 wt.% GFRP plies and 70 wt.% NFRP plies, the perforation energy of NFRP-GFRP hybrid helicoidal laminate outperforms both the plain GFRP and plain NFRP laminates by 11.7% and 143.8%, respectively, whereas the peak load of the hybrid helicoidal laminate subjected to impact is also comparable to the plain GFRP laminate.尽管天然纤维增强聚合物（NFRP）复合材料的机械性能低于玻璃纤维增强聚合物（GFRP）复合材料等合成复合材料，但人们对其结构部件的兴趣与日俱增。本研究表明，通过将层压板铺层设计与层间杂化相结合，可以显著提高 NFRP-GFRP 混合层压板的抗冲击性能。通过在混合层压板的顶部和底部附近放置更多的 GFRP 层，同时减少层压板中心周围相邻的 GFRP-GFRP 层和相邻的 NFRP-NFRP 层，混合层压板的抗冲击性可以得到显著提高，甚至超过 GFRP 层压板。在层压板堆叠顺序的基础上，通过引入生物启发的螺旋形层压，可进一步提高混合层压板的抗冲击性能。结果表明，在 30 重量%的 GFRP 层和 70 重量%的 NFRP 层中，NFRP-GFRP 混合螺旋形层压板的穿孔能分别比普通 GFRP 层压板和普通 NFRP 层压板高出 11.7% 和 143.8%，而混合螺旋形层压板在受到冲击时的峰值载荷也与普通 GFRP 层压板相当。Shape memory polyimide/carbon nanotube composite aerogels with physical and chemical crosslinking architectures for thermal insulating applicationsLiying Zhang, Xiang Li, Enjie Ding, Zhengyu Guo, Chuyang Luo, Hui Zhang, Jianyong Yudoi:10.1016/j.compscitech.2024.110588 用于隔热应用的具有物理和化学交联结构的形状记忆聚酰亚胺/碳纳米管复合气凝胶The development of lightweight smart materials with exceptional shape memory and thermal insulation properties is highly important in the aerospace industry. The reported shape memory polymer aerogels (SMPAs) are restricted to harsh environments because of their poor high-temperature resistance and large volume shrinkage at elevated temperatures. Herein, shape memory polyimide (PI) composite aerogels with superior thermal insulation were fabricated by combining molecularly designed PI chains with amino-functionalized carbon nanotubes (NH2-CNTs) through freezing gelation and subsequent thermal imidization. Because shape memory behavior was thermally triggered, the thermal conductivity associated with the shape memory mechanisms of the aerogels was comprehensively explored. The presence of CNTs promoted heat transfer in the aerogel skeleton, facilitating the shape recovery response. Benefiting from chemical-crosslinked and physical-crosslinked structures, the fabricated PI composite aerogels demonstrated desirable thermo-mechanical properties, exceptional shape memory and superior thermal insulation performance. This study may provide guidelines for designing shape memory PI composite aerogels for harsh environment applications in aerospace engineering.开发具有优异形状记忆和隔热性能的轻质智能材料对航空航天工业非常重要。已报道的形状记忆聚合物气凝胶（SMPAs）因其耐高温性差和在高温下体积收缩大而仅限于在恶劣环境下使用。在本文中，通过冷冻凝胶化和随后的热酰亚胺化，将分子设计的聚酰亚胺（PI）链与氨基功能化碳纳米管（NH2-CNTs）结合在一起，制造出了具有优异隔热性能的形状记忆聚酰亚胺（PI）复合气凝胶。由于形状记忆行为是由热引发的，因此我们对与气凝胶形状记忆机制相关的导热性进行了全面探索。碳纳米管的存在促进了气凝胶骨架中的热传导，有利于形状恢复反应。得益于化学交联和物理交联结构，所制备的 PI 复合气凝胶表现出理想的热机械性能、优异的形状记忆和卓越的隔热性能。这项研究可为设计用于航空航天工程中恶劣环境应用的形状记忆 PI 复合气凝胶提供指导。来源：复合材料力学仿真Composites FEM

【新文速递】2024年4月19日复合材料SCI期刊最新文章

Composite Structures

Composites Part A: Applied Science and Manufacturing

Composites Part B: Engineering

Composites Science and Technology

【新文速递】2024年4月8日复合材料SCI期刊最新文章