Science and Engineering of Composite Materials最新文献_第2页

Research and analysis on low-velocity impact of composite materials 复合材料低速冲击的研究与分析

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0209

Ju Qiu

引用次数: 0

An investigation into the effect of cross-ply on energy storage and vibration characteristics of carbon fiber lattice sandwich structure bionic prosthetic foot 交叉铺层对碳纤维网格夹层结构仿生假足储能和振动特性影响的研究

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0206

Meijiao Jiang, Junxia Zhang

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Mechanical property improvement of oil palm empty fruit bunch composites by hybridization using ramie fibers on epoxy–CNT matrices 苎麻纤维在环氧碳纳米管基体上杂交改善油棕空果束复合材料力学性能

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0198

Praswasti Pembangun Dyah Kencana Wulan, Yogi Yolanda

{"title":"Mechanical property improvement of oil palm empty fruit bunch composites by hybridization using ramie fibers on epoxy–CNT matrices","authors":"Praswasti Pembangun Dyah Kencana Wulan, Yogi Yolanda","doi":"10.1515/secm-2022-0198","DOIUrl":"https://doi.org/10.1515/secm-2022-0198","url":null,"abstract":"Abstract Oil palm empty fruit bunches (OPEFBs) can be transformed into composite boards with higher selling value when their cellulose is used as a fiber. Manufacturing composites with hybridization techniques can improve their properties. This study combined OPEFBs and ramie fibers in an epoxy–carbon nanotube (CNT) matrix. The proportion of OPEFBs and ramie fibers was varied (3:7, 5:5, and 7:3), with a total fiber content of 10% by volume and a matrix of 90% by volume. Alkali treatment using NaOH solution was applied to the fiber to remove impurities from the surface. CNTs were functionalized using nitric acid followed by hydrogen peroxide to improve compatibility. Surface treatment was conducted on fibers and CNTs to increase the bonds between these components in the composite material. The hybridization of OPEFBs/ramie fibers improved the tensile strength in the 3:7TR, 5:5TR, and 7:3TR composites by 127, 37, and 12%, respectively, compared to the 10T composite. The flexural strength of the 5:5TR hybrid composite increased by 120%, and that of the 3:7TR and 7:3TR composites increased by 83% against the 10R composite. The 3:7TR hybrid composite showed the best mechanical properties.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46418077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Experimental evaluation of velocity sensitivity for conglomerate reservoir rock in Karamay oil field 克拉玛依油田砾岩储层岩石速度敏感性试验评价

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0204

Haishui Han, Qun Zhang, W. Lv, Lu Han, Z. Ji, Shanyan Zhang, Changhong Zhao, Hao Kang, Linghui Sun, Rui Shen

{"title":"Experimental evaluation of velocity sensitivity for conglomerate reservoir rock in Karamay oil field","authors":"Haishui Han, Qun Zhang, W. Lv, Lu Han, Z. Ji, Shanyan Zhang, Changhong Zhao, Hao Kang, Linghui Sun, Rui Shen","doi":"10.1515/secm-2022-0204","DOIUrl":"https://doi.org/10.1515/secm-2022-0204","url":null,"abstract":"Abstract Velocity sensitivity refers to the possibility and degree of reservoir permeability decline caused by the migration of various particles in the reservoir rock due to the increase in fluid flow velocity and the blockage of pore channels. To improve the development results of M reservoir in Karamay Oil field, two reservoir cores were selected to carry out velocity sensitivity experiments. The permeability of No. 1 core decreases obviously when the flow rate is greater than 0.04 mL/min. Therefore, it can be considered that the injection rate of velocity sensitivity is between 0.04 and 0.06 mL/min, and the displacement rate should be less than 0.04 mL/min in the core displacement experiment. When the flow rate is greater than 0.5 mL/min, the permeability of No. 2 core decreases significantly. This is mainly due to the high permeability and critical velocity of No. 2 core. The study can provide a basis for the selection of displacement velocity in core displacement experiments, and also provide a reference for the determination of reasonable injection-production velocity in actual production.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48426427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Analytical solutions of coupled functionally graded conical shells of revolution 耦合功能梯度旋转锥壳的解析解

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0183

A. Muc, M. Muc-Wierzgoń

引用次数: 0

Vibration response of functionally graded material sandwich plates with elliptical cutouts and geometric imperfections under the mixed boundary conditions 混合边界条件下椭圆切口和几何缺陷功能梯度材料夹层板的振动响应

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0160

Dheeraj Singh, Ankit Gupta

引用次数: 0

The influence of water vapor on the structural response of asphalt pavement 水蒸气对沥青路面结构响应的影响

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0184

You-hua Zhang, Xiaobin Fang, Xianfeng Tan, Zhengang Li

{"title":"The influence of water vapor on the structural response of asphalt pavement","authors":"You-hua Zhang, Xiaobin Fang, Xianfeng Tan, Zhengang Li","doi":"10.1515/secm-2022-0184","DOIUrl":"https://doi.org/10.1515/secm-2022-0184","url":null,"abstract":"Abstract A series of water damage phenomena of asphalt pavement during service show that water is very important. To comprehensively analyze the influence of water vapor factors on the response of pavement structure, this article first tests the water vapor diffusion coefficient of asphalt pavement materials at different temperatures establishes the water vapor concentration field model of the pavement structure, and analyzes the actual water vapor distribution of the pavement structure; then, the relationship between viscoelastic parameters of the mixture and water vapor concentration is established. Based on this, the finite element model of the pavement structure considering the water vapor factor is established, and the influence of the water vapor factor on the pavement structure response and fatigue life is quantified. It is found that water vapor has an important influence on the mechanical response. On the hottest days in summer, the attenuation of surface modulus caused by water vapor has the greatest impact on the upper layer of the pavement structure. Under the influence of water vapor, the position just below the wheel of the upper layer at the bottom of the horizontal tension strain increases by 108.26%, and the horizontal tension strain of the other layers increases by about 5%, increasing the risk of upper layer cracking. At the same time, water vapor reduces the stress that can be borne by the surface layer, while the rest of the stress is borne by the base. Compared with the fatigue life calculation method in the specification, the actual non-uniform water vapor concentration field reduces the fatigue life of the surface layer by 12.246%. This shows that the current structural calculation does not consider the water vapor factor, which makes the pavement structure more dangerous, and the influence of the water vapor factor should be fully considered.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42261589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays 连续纤维增强热塑性塑料/金属复合连接中的纤维取向

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0165

J. Popp, M. Busch, T. Hausotte, D. Drummer

{"title":"Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays","authors":"J. Popp, M. Busch, T. Hausotte, D. Drummer","doi":"10.1515/secm-2022-0165","DOIUrl":"https://doi.org/10.1515/secm-2022-0165","url":null,"abstract":"Abstract Continuous fiber-reinforced thermoplastics (CFRTs) can in combination with high-strength metals offer characteristics that cannot be achieved with mono-material parts. One possible example is the combination of locally high-temperature resistance in the metal component with superior weight-related mechanical properties due to the CFRT component. This approach requires a reliable and durable joining technology, which considers the material-specific properties and allows to exploit the full potential of CFRT/metal hybrid parts. A promising approach in the field of CFRT/metal joining is the use of metallic pins, which can be embedded in the locally heated CFRT component to create a form-fitting joint. In the current state of the art, primarily single-pins are investigated and characterized: especially the distinct fiber orientation in the direct pin pressing process is only described for single-pin joints. Behind this background, the present study aims at creating an understanding of the fiber orientation mechanism for multi-pin arrays. Therefore, in the scope of this study, unidirectional reinforced glass fiber/polypropylene samples are joined via direct pin pressing and infrared heating with different 1D and 2D multi-pins arrays with different pin-diameters, spacing and pin distributions. The resulting joint morphology is consequently analyzed using micro-computer-tomography. Based on the performed investigations, a model for the fiber displacement mechanism is proposed, and the first recommendations for the design of fiber-friendly multi-pin joints with unidirectional reinforcements are given. It showed that especially pin-spacing in fiber orientation in dependency of the pin diameter is critical for a fully reconsolidated joint quality, and it is suggested that a pin-offset in the fiber direction is beneficial for a fiber-friendly joining process.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42318845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Damage mechanisms of bismaleimide matrix composites under transverse loading via quasi-static indentation 双马来酰亚胺基复合材料在准静态压痕横向载荷下的损伤机理

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0181

H. Dong, Xiaogang Li, Yueteng Li, Huanghai Qian, Zhengtao Su

{"title":"Damage mechanisms of bismaleimide matrix composites under transverse loading via quasi-static indentation","authors":"H. Dong, Xiaogang Li, Yueteng Li, Huanghai Qian, Zhengtao Su","doi":"10.1515/secm-2022-0181","DOIUrl":"https://doi.org/10.1515/secm-2022-0181","url":null,"abstract":"Abstract With the application of carbon fiber reinforced plastics (CFRPs), the damage behaviors and mechanisms are desirable to understand. In this work, the Bismaleimide (BMI) matrix composites were employed to study the damage mechanism under transverse loading through quasi-static indentation, where optical microscopy, ultrasonic C-scan, and scanning electron microscope were subjected to examine the damaged regions. The results show that cracks first take place in a resin-rich interlaminar region before the loading reached to a threshold value. Then, the cracks would develop into intralaminar cracks in the fiber bundle region consisting of the shear and bending cracks. Subsequently, the cracks randomly extend to adjacent plies and result in delamination. Finally, the back surface of composites presents a remarkable ply splitting and fiber breakage under increasing loading. Furthermore, conical-shaped indentation patterns in cross-sectional and the undamaged zone under the indenter suggest the BMI matrix composites possess potential applications in engineering materials with a superior stress-releasing structure.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42096257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 aggregate characteristics on properties of cemented sand and gravel 集料特性对胶结砂砾石性能的影响

IF 1.9 4区材料科学

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI: 10.1515/secm-2022-0220

Lixia Guo, Zhengqi Wu, L. Zhong, Y. Luo

{"title":"Effect of aggregate characteristics on properties of cemented sand and gravel","authors":"Lixia Guo, Zhengqi Wu, L. Zhong, Y. Luo","doi":"10.1515/secm-2022-0220","DOIUrl":"https://doi.org/10.1515/secm-2022-0220","url":null,"abstract":"Abstract To improve the stability of cemented sand and gravel (CSG) dam construction materials, artificial aggregates can be selected to replace missing natural aggregates, and aggregate grading optimization can be carried out to meet the needs of engineering applications. This article uses finite-element analysis software to explore the influence of aggregate characteristics on the performance and destruction characteristics of CSG materials through numerical simulation. The results show that (1) with the increase of circular natural sand gravel aggregates, the peak stress and elastic modulus of the sample increase, while the strength also increases. (2) Compared to circular aggregates, polygonal aggregates have more edges and corners, which exacerbate the deformation disharmony between mortar and aggregates; the phenomenon of stress concentration is more obvious, so under the same loading step, the degree of damage of polygonal aggregates is greater than that of circular aggregates. (3) After the freeze–thaw cycle test, the deterioration of parameters in the CSG resulted in more severe damage and strength loss of the crushed stone aggregate than the circular aggregate sample. This conclusion can provide a reference for the design of CSG mix ratio in engineering sites.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48130111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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