【新文速递】2024年5月24日复合材料SCI期刊最新文章_ACT_Mechanical_振动_疲劳_复合材料_化学_拓扑优化_航空_航天_ADS_UG_UM_裂纹_材料_储能_仿生

【新文速递】2024年3月16日复合材料SCI期刊最新文章

今日更新：Composite Structures 1 篇，Composites Part A: Applied Science and Manufacturing 1 篇，Composites Part B: Engineering 1 篇，Composites Science and Technology 1 篇Composite StructuresA fast polynomial-FE method for the vibration of the composite laminate quadrilateral plates and shells based on the segmentation strategyYiming Zhao, Ke Yuan, Bin Qin, Lumin Shen, Wang Zhonggangdoi:10.1016/j.compstruct.2024.118035基于分段策略的复合层压四边形板壳振动多项式-FE 快速方法The finite element method is widely applicable to various kinds of models. Nonetheless, as the size and frequency domain of the solving model increase, it encounters challenges related to high memory consumption and slow solution speed. To enhance the computational efficiency while preserving its existing advantages, this study incorporates the Jacobi polynomial with a segmentation strategy into the finite element method for addressing the vibration analysis of composite laminate quadrilateral flat and curved plates. In this method, the dynamic stiffness matrix of a finite element is multiplied on both sides by a matrix composed of Jacobi polynomial basis functions, thereby transforming the expression form of the dynamic stiffness matrix from FE form to meshless form and reducing its size. Additionally, the segmentation strategy is introduced to divide the model into multiple blocks, enhancing convergence and calculation efficiency by altering the sparsity pattern of the dynamic stiffness matrix. Convergence research, validation studies, limitations studies, and parametric studies are conducted. The method demonstrates evident advantages in computational efficiency for random surface quadrilateral models requiring dense mesh description while maintaining a certain level of accuracy.有限元法广泛适用于各种模型。然而，随着求解模型的大小和频域的增加，有限元法也遇到了内存消耗大、求解速度慢等难题。为了在保留其现有优势的同时提高计算效率，本研究在有限元方法中加入了雅可比多项式和分段策略，以解决复合材料层压四边形平板和曲面板的振动分析问题。在该方法中，有限元的动态刚度矩阵两边乘以雅可比多项式基函数组成的矩阵，从而将动态刚度矩阵的表达形式从有限元形式转换为无网格形式，并减小其大小。此外，还引入了分割策略，将模型分成多个区块，通过改变动态刚度矩阵的稀疏性模式来提高收敛性和计算效率。此外，还进行了收敛性研究、验证研究、局限性研究和参数研究。对于需要密集网格描述的随机曲面四边形模型，该方法在保持一定精度的同时，在计算效率方面具有明显优势。Composites Part A: Applied Science and ManufacturingGreen manufacturing process design for infusible acrylic resin composites: A data-guided life cycle management model incorporating material-process-property-energy-emission relationshipsYan Shen, Wutong Du, Xuelin Sui, Xinyue Liu, Ben Zhong Tang, Jinglei Yangdoi:10.1016/j.compositesa.2024.108146可灌注丙烯酸树脂复合材料的绿色制造工艺设计：数据引导的生命周期管理模型，包含材料-工艺-性能-能耗-排放关系This research targets the green manufacturing process design of novel liquid thermoplastic resin-based composites. First, curing cycles at various temperatures were explored via a two-stage determination. Energy consumption was recorded via power monitoring. Greenhouse gas (GHG) emissions from consumed electricity and polymerization were calculated to quantify the eco-impact. Moreover, the effect of curing conditions on mechanical properties was revealed. Results showed that sunbathing in the shadow could be a green manufacturing process with the shortest manufacturing cycle and almost no additional energy consumption. Notably, room-temperature polymerization for 24 h achieved the highest tensile modulus; isothermal curing at 40 °C for 3 h demonstrated superior tensile and flexural strength; and isothermal curing at 60 °C for 1.5 h obtained the greatest flexural modulus. Finally, this study constructed the “Material-Process-Property-Energy-emission” (MPPEE) relationships and provided a green manufacturing process design methodology for trading off between manufacturing efficiency, mechanical performance, and sustainability.本研究以新型液态热塑性树脂基复合材料的绿色制造工艺设计为目标。首先，通过两阶段测定法探索了不同温度下的固化周期。通过电力监控记录能源消耗。通过计算消耗的电力和聚合产生的温室气体（GHG）排放量，对生态影响进行量化。此外，还揭示了固化条件对机械性能的影响。结果表明，"阴影下的日光浴 "是一种绿色制造工艺，其制造周期最短，几乎没有额外的能源消耗。值得注意的是，室温聚合 24 小时可获得最高的拉伸模量；40 °C等温固化 3 小时可获得优异的拉伸和弯曲强度；60 °C等温固化 1.5 小时可获得最大的弯曲模量。最后，本研究构建了 "材料-工艺-性能-能源-排放"（MPPEE）关系，并提供了一种在制造效率、机械性能和可持续性之间进行权衡的绿色制造工艺设计方法。Composites Part B: EngineeringEfficient photocatalytic H2 evolution over NiMoO4/Twinned-Cd0.5Zn0.5S double S-scheme homo-heterojunctionsJingzhuo Tian, Xiaofei Cao, Tao Sun, Hui Miao, Zhong Chen, Wenhua Xue, Jun Fan, Enzhou Liudoi:10.1016/j.compositesb.2024.111389 NiMoO4/Twinned-Cd0.5Zn0.5S 双 S 型同质异质结上的高效光催化 H2 演化The effectiveness of charge transfer and separation between bulk phase and the interface is crucial for evaluating the performance of photocatalysts. In this study, NiMoO4 was employed to enhance the photocatalytic activity for hydrogen (H2) evolution in twinned Cd0.5Zn0.5S (T-CZS) homojunctions comprising of wurtzite Cd0.5Zn0.5S (WZ-CZS) and zinc blende Cd0.5Zn0.5S (ZB-CZS) with alternating arrangements. The investigation reveals that the introduction of NiMoO4 can lead to an increase of active sites for H2 evolution, a prolongation of charge carrier lifetime, and a decrease of H2 evolution overpotential. The H2 production rate of 8 wt% NiMoO4/T-CZS reaches up to 71.2 mmol h−1 g−1, while its apparent quantum efficiency (AQY) is 8.23% at 400 nm. The enhanced activity can be attributed to the synergistic effects of homojunctions and heterojunctions in NiMoO4/T-CZS. According to the density functional theory (DFT), photoelectric response, and radical trapping experimental analysis, the charge transfer between WZ-CZS and ZB-CZS in T-CZS, as well as NiMoO4 and T-CZS, both follow the S-scheme pathway under the influence of band bending, Coulombic force, and built-in electric field. This leads to an effective internal and interfacial charge separation in NiMoO4/T-CZS homo-heterojunctions, while maintaining their high reactivity. Additionally, the H2 evolution activity of T-CZS can also be increased in different degrees by various metal molybdates (MMoO4) including CoMoO4, Ag2MoO4, Bi2(MoO4)3, BaMoO4, ZnMoO4, and CdMoO4. The bulk and interfacial synergistic double S-scheme homo-heterojunctions in this study provide new insights for targeted solar driven H2 evolution engineering.体相和界面之间电荷转移和分离的有效性对于评估光催化剂的性能至关重要。本研究采用 NiMoO4 来提高孪晶 Cd0.5Zn0.5S（T-CZS）同质结中氢（H2）进化的光催化活性，该同质结由交替排列的钨锌态 Cd0.5Zn0.5S（WZ-CZS）和混合锌态 Cd0.5Zn0.5S（ZB-CZS）组成。研究发现，NiMoO4 的引入可以增加 H2 演化的活性位点，延长电荷载流子的寿命，降低 H2 演化的过电位。8 wt% NiMoO4/T-CZS 的 H2 产率高达 71.2 mmol h-1 g-1，在 400 纳米波长下的表观量子效率（AQY）为 8.23%。活性的增强可归因于 NiMoO4/T-CZS 中同结和异结的协同效应。根据密度泛函理论（DFT）、光电响应和自由基捕获实验分析，T-CZS 中的 WZ-CZS 和 ZB-CZS 之间以及 NiMoO4 和 T-CZS 之间的电荷转移均在带弯曲、库仑力和内置电场的影响下遵循 S 型途径。这导致了 NiMoO4/T-CZS 同质异质结中有效的内部和界面电荷分离，同时保持了其高反应活性。此外，各种金属钼酸盐（MMoO4）（包括 CoMoO4、Ag2MoO4、Bi2(MoO4)3、BaMoO4、ZnMoO4 和 CdMoO4）也能不同程度地提高 T-CZS 的 H2 演化活性。本研究中的块体和界面协同双 S 型同质异质结为有针对性的太阳能驱动 H2 演化工程提供了新的见解。Composites Science and TechnologyIn-situ growth of CuS on polyimide film to construct dense and continuous network: Achieving excellent electrothermal and EMI shielding performanceLingtong Li, Zhiheng Zhao, Yang Pan, Minhang Chen, Yang Zhang, Renke Li, Hong Wu, Shaoyun Guodoi:10.1016/j.compscitech.2024.110543 在聚酰亚胺薄膜上原位生长 CuS，构建致密连续的网络：实现优异的电热和电磁干扰屏蔽性能The performance of the electrothermal film is generally determined by conductive filler network. However, it is still challenging to construct a dense network of conductive fillers in the electrothermal film. In this work, we develop a simple and efficient method to construct a dense and continuous network via in-situ growth of CuS nanosheets on the surface of polyimide (PI) film with stable interfacial bonding. The obtained PI@CuS electrothermal film is further packaged by commercially available PTFE and PI tapes to achieve desirable surface hydrophobic self-cleaning function and stability for the use in different environments. By tuning the network density of CuS nanosheets, it imparts excellent electrothermal conversion efficiency and cycling stability to the PI@CuS film, whose surface temperature could rapidly ramp up over 200 °C at 8 V. The film also exhibits excellent photothermal performance, reaching close to 100 °C at 100 mW/cm2. The anti-icing/de-icing experiment shows that the icing time is prolonged significantly at low temperature and the melting time is reduced dramatically. Furthermore, the PI@CuS film also exhibits outstanding electromagnetic interference (EMI) shielding effectiveness of 57.1 dB with a thickness of only 80 μm, and excellent tensile strength of over 90 MPa. The in-situ growth strategy provides a novel route for the fabrication of the electrothermal film with excellent overall performance.电热膜的性能通常取决于导电填料网络。然而，在电热膜中构建致密的导电填料网络仍然具有挑战性。在这项工作中，我们开发了一种简单而高效的方法，通过在聚酰亚胺（PI）薄膜表面原位生长 CuS 纳米片，在稳定的界面键合下构建致密而连续的网络。得到的 PI@CuS 电热膜再用市售的聚四氟乙烯（PTFE）和聚酰亚胺（PI）胶带包装，以获得理想的表面疏水自清洁功能和稳定性，从而可在不同环境中使用。通过调整 CuS 纳米片的网络密度，PI@CuS 薄膜具有出色的电热转换效率和循环稳定性，在 8 V 电压下，其表面温度可迅速升至 200 ℃ 以上。该薄膜还具有出色的光热性能，在 100 mW/cm2 的条件下，温度可接近 100 °C。抗结冰/除冰实验表明，低温下结冰时间明显延长，熔化时间显著缩短。此外，PI@CuS 薄膜还具有出色的电磁干扰（EMI）屏蔽效果，厚度仅为 80 μm，屏蔽效果却高达 57.1 dB，抗拉强度超过 90 MPa。原位生长策略为制造具有优异综合性能的电热膜提供了一条新途径。来源：复合材料力学仿真Composites FEM