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学者姓名：赖福强
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Abstract ：
To explore the wide-frequency damping and vibration-attenuation performances in the application of aerospace components, the cylindrical sandwich shell structure with a gradient core of entangled wire mesh was proposed in this paper. Firstly, the gradient cores of entangled wire mesh in the axial and radial directions were prepared by using an in -house Numerical Control weaving machine, and the metallurgical connection between skin sheets and the gradient core was performed using vacuum brazing. Secondly, to investigate the mechanical properties of cylindrical sandwich shells with axial or radial gradient cores, quasi-static and dynamic mechanical experiments were carried out. The primary evaluations of mechanical properties include secant stiffness, natural frequency, Specific Energy Absorption (SEA), vibration acceleration level, and so on. The results suggest that the vibration-attenuation performance of the sandwich shell is remarkable when the high-density core layer is at the end of the shell or abuts the inner skin. The axial gradient material has almost no influence on the vibration frequencies of the shell, whereas the vibration frequencies increase dramatically when the high-density core layer approaches the skin. Moreover, compared to the conventional sandwich shells, the proposed functional grading cylindrical sandwich shell exhibits more potential in mass reduction, stiffness designing, and energy dissipation. (c) 2023 China Ordnance Society. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
Keyword ：
Damping Damping Entangled wire mesh Entangled wire mesh Gradient cylindrical sandwich shell Gradient cylindrical sandwich shell Secant stiffness Secant stiffness Vacuum brazing Vacuum brazing
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| GB/T 7714 | Xue, Xin , Zheng, Chao , Lai, Fu-qiang et al. Mechanical property of cylindrical sandwich shell with gradient core of entangled wire mesh [J]. | DEFENCE TECHNOLOGY , 2024 , 31 : 510-522 . |
| MLA | Xue, Xin et al. "Mechanical property of cylindrical sandwich shell with gradient core of entangled wire mesh" . | DEFENCE TECHNOLOGY 31 (2024) : 510-522 . |
| APA | Xue, Xin , Zheng, Chao , Lai, Fu-qiang , Wu, Xue-qian . Mechanical property of cylindrical sandwich shell with gradient core of entangled wire mesh . | DEFENCE TECHNOLOGY , 2024 , 31 , 510-522 . |
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设计一种对称式金属橡胶与线弹簧复合的隔振器，基于整体隔振，考虑安装板的柔性因素，建立相应的等效线性动力学模型.通过准静态力学试验，分析线弹簧刚度、金属橡胶密度和加载位移对金属橡胶复合隔振器准静态性能的影响.同时，进行随机振动试验，研究金属橡胶复合隔振器在整体隔振中的隔振性能.试验结果表明，复合样件的刚度特性趋向于线性效果.金属橡胶复合隔振器在谐振点处的峰值衰减是线弹簧隔振器的5倍以上，且系统的随机振动响应在频段0.12～2.00 kHz内都有较大程度的衰减.
Keyword ：
复合隔振器 复合隔振器 整体隔振 整体隔振 线弹簧 线弹簧 金属橡胶 金属橡胶 随机振动 随机振动
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| GB/T 7714 | 任志英 , 梁盛涛 , 李金明 et al. 金属橡胶复合隔振器的动静态性能 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (01) : 69-76 . |
| MLA | 任志英 et al. "金属橡胶复合隔振器的动静态性能" . | 福州大学学报(自然科学版) 52 . 01 (2024) : 69-76 . |
| APA | 任志英 , 梁盛涛 , 李金明 , 白鸿柏 , 赖福强 . 金属橡胶复合隔振器的动静态性能 . | 福州大学学报(自然科学版) , 2024 , 52 (01) , 69-76 . |
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Metal rubber component (MRC) is commonly used in special work conditions such as high temperature/corrosive environments primarily due to its excellent vibration damping/insulation properties. But in special work conditions for a long time, the performance of MRC will deteriorate to a failure to meet the work requirements. Therefore, it is imperative to enhance the performance of MRC and study its performance degradation in special work conditions. In this paper, pickling, silanization and pickle-silanization surface treatments for metal rubber components (MRCs) were carried out. The properties of MRCs after surface treatment under static compression and full immersion corrosive test were studied, and a remaining service life prediction model of MRCs under corrosion condition was established. Compared with MRC without surface treatment (U-MRC), the performance degradation degree of several MRCs was evaluated based on four physical and mechanical parameters - the amplitude of variation in height, average stiffness, energy dissipation, and loss factor. The results indicated that MRCs exhibited different degrees of performance degradation. Among them, pickling-silanized MRC (PS-MRC) has the best corrosion resistance. The stiffness variation amplitude must be nearly 8% smaller than that of UMRC, and the energy consumption variation amplitude is about 12% smaller than that of U-MRC.
Keyword ：
Full immersion corrosion conditions Full immersion corrosion conditions Metal rubber components Metal rubber components Performance degradation patterns Performance degradation patterns Remaining service life prediction Remaining service life prediction Surface treatments Surface treatments
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| GB/T 7714 | Lai, Fuqiang , Gao, Guilin , Hao, Xiangfei et al. Research on performance degradation patterns of metal rubber components under the coupling of static compression and full immersion corrosive environment [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 39 . |
| MLA | Lai, Fuqiang et al. "Research on performance degradation patterns of metal rubber components under the coupling of static compression and full immersion corrosive environment" . | MATERIALS TODAY COMMUNICATIONS 39 (2024) . |
| APA | Lai, Fuqiang , Gao, Guilin , Hao, Xiangfei , Hu, Anqiong , Xue, Xin , Bai, Hongbai et al. Research on performance degradation patterns of metal rubber components under the coupling of static compression and full immersion corrosive environment . | MATERIALS TODAY COMMUNICATIONS , 2024 , 39 . |
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This work aims to significantly improve the mechanical properties of conventional rigid lattice structures under repeatable large deformations. A novel hybrid material is proposed based on the concept of interpenetrating composite materials. The material utilizes a woven TC4 orthogonal spiral wire mesh as the skeleton and PU elastomer (OSWM-PU) as the matrix. The uniaxial tensile tests demonstrate that OSWM-PU possesses the excellent load-bearing capacity, allowing for large deformations (>= 60%) while maintaining partial integrity even after matrix fracture. Optical measurements and simulation analysis reveal that Poisson's ratio can be adjusted within a certain range by manipulating the microscopic parameters (p, d) of the longitudinal helical filaments. Cyclic tensile experiments further demonstrate that OSWM-PU exhibits exceptional energy absorption performance, multiple energy dissipation modes, and a more pronounced Mullins effect. The stress relaxation experiment reveals the significant influence of the volume fraction of the skeleton on long-term loading conditions. The orthogonal spiral wire skeleton exhibits a superior hooking effect without dividing the matrix, enabling OSWM-PU to possess enhanced collaborative deformation capability and inherent designability in the orthogonal direction. These characteristics make it highly promising for applications in various robot joints and as flexible aircraft skin, offering excellent prospects for utilization. This work presents a novel hybrid composite with orthogonal spiral wire mesh and polyurethane elastomer. The variation of Poisson's ratio is analyzed. Two main research findings are 1) increased energy dissipation is attributed to friction and debonding occurring at the interface; and 2) higher volume fraction of the wire mesh results in reduced stress retention capacity.image (c) 2024 WILEY-VCH GmbH
Keyword ：
cyclic tensile cyclic tensile interpenetrating composites interpenetrating composites orthogonal spiral wire meshes orthogonal spiral wire meshes Poisson's ratios Poisson's ratios stress relaxation performances stress relaxation performances
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| GB/T 7714 | Xue, Xin , Lin, Congcong , Ye, Zixiong et al. Mechanical Behaviors of Hybrid Composites with Orthogonal Spiral Wire Mesh and Polyurethane Elastomer [J]. | ADVANCED ENGINEERING MATERIALS , 2024 . |
| MLA | Xue, Xin et al. "Mechanical Behaviors of Hybrid Composites with Orthogonal Spiral Wire Mesh and Polyurethane Elastomer" . | ADVANCED ENGINEERING MATERIALS (2024) . |
| APA | Xue, Xin , Lin, Congcong , Ye, Zixiong , Lai, Fuqiang . Mechanical Behaviors of Hybrid Composites with Orthogonal Spiral Wire Mesh and Polyurethane Elastomer . | ADVANCED ENGINEERING MATERIALS , 2024 . |
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本发明涉及一种多自由度复合减振器及其工作方法，包括盖板和底座，所述盖板和底座之间设有位于中部的金属橡胶减振筒；盖板和底座之间设有还连接有若干均布在金属橡胶减振筒外围的斜置金属橡胶减振器，相邻两斜置金属橡胶减振器之间设有滑动减振装置。本发明多自由度复合减振器采用了耐老化的金属橡胶作为该多自由度复合减振器中的主阻尼的材料，可用于恶劣的环境，延长了减振器的使用寿命，提高了减振器的经济适用性；解决了传统减振器环境适应性差、寿命短、抗冲击稳定性弱的缺点，并且加强了减振器水平振动的处理效能，提高了各个方向的抗冲击的性能，在复杂的冲击情况下，能够抵抗不同方向的冲击力。
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| GB/T 7714 | 白鸿柏 , 梁佳松 , 朱天奇 et al. 一种多自由度复合减振器及其工作方法 : CN202210902628.5[P]. | 2022-07-29 00:00:00 . |
| MLA | 白鸿柏 et al. "一种多自由度复合减振器及其工作方法" : CN202210902628.5. | 2022-07-29 00:00:00 . |
| APA | 白鸿柏 , 梁佳松 , 朱天奇 , 吴乙万 , 赖福强 , 黄凯迪 . 一种多自由度复合减振器及其工作方法 : CN202210902628.5. | 2022-07-29 00:00:00 . |
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本发明公开了一种锌合金基镍包石墨自润滑三维网络复合材料及其制备方法，其是将不锈钢丝经粗化等预处理后，在其表面喷涂由无机粘结剂、镍包石墨粉和水组成的混合物，然后将表面喷涂有镍包石墨粉的不锈钢丝经螺旋卷绕制、螺旋卷拉伸、缠绕等处理，制成三维连续的金属橡胶骨架，再将其放入预热的模具中，并倒入含镍包石墨粉的锌合金熔液，经挤压铸造及退火处理，得到所述锌合金基镍包石墨自润滑三维网络复合材料。该复合材料协同利用三维连续结构的金属橡胶对锌合金基体的强化作用和石墨粉的润滑作用，使其不仅具备自润滑性能，且其强度和刚度等机械性能也较锌合金基体得到了明显提升。
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| GB/T 7714 | 赖福强 , 胡安琼 , 吴乙万 et al. 锌合金基镍包石墨自润滑三维网络复合材料的制备方法 : CN202211101333.4[P]. | 2022-09-09 00:00:00 . |
| MLA | 赖福强 et al. "锌合金基镍包石墨自润滑三维网络复合材料的制备方法" : CN202211101333.4. | 2022-09-09 00:00:00 . |
| APA | 赖福强 , 胡安琼 , 吴乙万 , 白鸿柏 , 周毅 , 吴恺斌 . 锌合金基镍包石墨自润滑三维网络复合材料的制备方法 : CN202211101333.4. | 2022-09-09 00:00:00 . |
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In this paper, the responses of machined surface roughness and milling tool cutting forces under the different milling processing parameters (cutting speed v, feed rate f, and axial cutting depth a(p)) are experimentally investigated to meet the increasing requirements for the mechanical machining of T2 pure copper. The effects of different milling processing parameters on cutting force and tool displacement acceleration are studied based on orthogonal and single-factor milling experiments. The three-dimensional morphologies of the workpieces are observed, and a white-light topography instrument measures the surface roughness. The results show that the degree of influence on S-a (surface arithmetic mean deviation) and S-q (surface root mean square deviation) from high to low level is the v, the f, and the a(p). When v = 600 m/min, a(p) = 0.5 mm, f = 0.1 mm/r, S-a and S-q are 1.80 mu m and 2.25 mu m, respectively. The cutting forces in the three directions negatively correlate with increased cutting speed; when v = 600 m/min, F-x reaches its lowest value. In contrast, an increase in the feed rate and the axial cutting depth significantly increases F-x. The tool displacement acceleration amplitudes demonstrate a positive relationship. Variation of the tool displacement acceleration states leads to the different microstructure of the machined surfaces. Therefore, selecting the appropriate milling processing parameters has a positive effect on reducing the tool displacement acceleration, improving the machined surface quality of T2 pure copper, and extending the tool's life. The optimal milling processing parameters in this paper are the v = 600 m/min, a(p) = 0.5 mm, and f = 0.1 mm/r.
Keyword ：
cutting force cutting force machining parameters optimization machining parameters optimization surface roughness surface roughness T2 pure copper T2 pure copper tool displacement acceleration tool displacement acceleration
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| GB/T 7714 | Lai, Fuqiang , Hu, Anqiong , Mao, Kun et al. Effect of Milling Processing Parameters on the Surface Roughness and Tool Cutting Forces of T2 Pure Copper [J]. | MICROMACHINES , 2023 , 14 (1) . |
| MLA | Lai, Fuqiang et al. "Effect of Milling Processing Parameters on the Surface Roughness and Tool Cutting Forces of T2 Pure Copper" . | MICROMACHINES 14 . 1 (2023) . |
| APA | Lai, Fuqiang , Hu, Anqiong , Mao, Kun , Wu, Zhangbin , Lin, Youxi . Effect of Milling Processing Parameters on the Surface Roughness and Tool Cutting Forces of T2 Pure Copper . | MICROMACHINES , 2023 , 14 (1) . |
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The purpose of this paper is to investigate the fatigue properties of C17200 alloy under the condition of quenching aging heat treatment at high temperatures, and to provide a design reference for its application in a certain temperature range. For this purpose, the tensile and rotary bending fatigue (RBF) tests were carried out at different temperatures (25 degrees C, 150 degrees C, 350 degrees C, and 450 degrees C). The tensile strength was obtained, and relationships between the applied bending stress levels and the number of fatigue fracture cycles were fitted to the stress-life (S-N) curves, and the related equations were determined. The fractured surfaces were observed and analyzed by a scanning electron microscopy (SEM). The results show that the RBF fatigue performance of C17200 alloy specimens is decreased with the increase in test temperature. When the temperature is below 350 degrees C, the performance degradation amplitudes of mechanical properties and RBF fatigue resistance are at a low level. However, compared to the RBF fatigue strength of 1 x 10(7) cycles at 25 degrees C, it is decreased by 38.4% when the temperature reaches 450 degrees C. It is found that the fatigue failure type of C17200 alloy belongs to surface defect initiation. Below 350 degrees C, the surface roughness of the fatigue fracture is higher, which is similar to the brittle fracture, so the boundary of the fracture regions is not obvious. At 450 degrees C, due to the further increase in temperature, oxidation occurs on the fracture surface, and the boundary of typical fatigue zone is obvious.
Keyword ：
beryllium copper alloy beryllium copper alloy elevated temperatures elevated temperatures fatigue strength fatigue strength performance degradation performance degradation rotating bending fatigue rotating bending fatigue
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| GB/T 7714 | Lai, Fuqiang , Mao, Kun , Cao, Changsheng et al. Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures [J]. | MATERIALS , 2023 , 16 (2) . |
| MLA | Lai, Fuqiang et al. "Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures" . | MATERIALS 16 . 2 (2023) . |
| APA | Lai, Fuqiang , Mao, Kun , Cao, Changsheng , Hu, Anqiong , Tu, Junxiang , Lin, Youxi . Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures . | MATERIALS , 2023 , 16 (2) . |
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High-performance lightweight composites are developed by integrating metal rubber (MR) into a zinc alloy (ZA8) matrix via squeeze casting. MR, comprising 304 stainless steel wires (SSWs) with diameters of 0.15 mm, forms 3D network skeletons with volume fractions of 8.8 vol% (S1), 11.1 vol% (S2), and 13.4 vol% (S3), respectively. The preparation parameters of the composites are optimized, and their microhardness is investigated. Special attention is paid to the ultimate compression and shear performance at 25, 150, and 250 degrees C. The microstructure and failure analysis are performed via scanning electron microscopy. The results reveal a 48.0% increase in microhardness at composite interfaces relative to ZA8. At 25 degrees C, S2 possesses an ultimate compressive strength (UCS) of 401.4 MPa, which is 33.7% higher than that of ZA8. At 150 and 250 degrees C, S3 exhibits UCS values of 180.3 and 74.3 MPa, exceeding those of ZA8 by 61.7% and 110.5%, respectively. Meanwhile, the ultimate shear strength of composites slightly drops below that of the matrix: the corresponding value of S1 specimen (158.4 MPa) at 250 degrees C is 11.5% below that of ZA8. Therefore, compression and shear failure mechanisms of MR/ZA8 composites are quite intricate, involving SSW separation, necking, and ZA8 fractures. High-performance lightweight composites are developed by integrating 3D network stainless steel wire (SSW) into a ZA8 zinc alloy via squeeze casting. The composites achieve a porosity of 0.8% after process optimization. At 150 and 250 degrees C, the composites ultimate compressive strength is enhanced by 61.7% and 110.5% than ZA8. The composites failure mechanisms involve SSW separation, necking, and ZA8 fractures.image (c) 2023 WILEY-VCH GmbH
Keyword ：
failure mechanisms failure mechanisms mechanical properties mechanical properties metal rubber metal rubber squeeze casting processes squeeze casting processes zinc alloy matrix composites zinc alloy matrix composites
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| GB/T 7714 | Lai, Fuqiang , Hu, Anqiong , Wu, Yiwan et al. Mechanical Property and Failure Mechanism of Metal Rubber/ZA8 Composite Made by Squeeze Casting Process [J]. | ADVANCED ENGINEERING MATERIALS , 2023 , 25 (22) . |
| MLA | Lai, Fuqiang et al. "Mechanical Property and Failure Mechanism of Metal Rubber/ZA8 Composite Made by Squeeze Casting Process" . | ADVANCED ENGINEERING MATERIALS 25 . 22 (2023) . |
| APA | Lai, Fuqiang , Hu, Anqiong , Wu, Yiwan , Bai, Hongbai , Xue, Xin . Mechanical Property and Failure Mechanism of Metal Rubber/ZA8 Composite Made by Squeeze Casting Process . | ADVANCED ENGINEERING MATERIALS , 2023 , 25 (22) . |
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In this study, the creep properties of cylindrical metal rubber (MR) specimen under static compression at elevated temperatures were investigated by a series of creep experiments. The cylindrical MR specimen has a good symmetrical property, and the mechanical properties are consistent in its different axial section. The failure determination parameters of MR under the coupling of thermal and mechanical static load of the forming direction were proposed in four aspects: the overall height, the average stiffness, the energy dissipation, and the variation of the loss factor. The variation patterns of the properties of the MR specimens were investigated with a static load at different temperatures for 324 h. The analytical equipment, including the simultaneous thermal analyzer (TGA/DSC), X-ray diffractometer (XRD), and scanning electron microscope (SEM), were used for material characterization and failure analysis. Based on the results, it is found that there are significant differences in the MR property variations subjected to creep tests at different elevated temperatures. The results indicated that an appropriate heat treatment for MR specimens would improve the creep resistance at elevated temperatures. In addition, the overall height and energy dissipation of the MR specimens were increased, and the average stiffness and the loss factor were decreased under the creep tests at 200 degrees C and 250 degrees C. However, under the creep tests at 25 degrees C, 300 degrees C, 350 degrees C, and 400 degrees C, the overall height, the energy dissipation and the loss factor were decreased, but the average stiffness was increased.
Keyword ：
creep properties creep properties failure determination parameters failure determination parameters metal rubber metal rubber thermal mechanical coupling thermal mechanical coupling
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| GB/T 7714 | Lai, Fuqiang , Hao, Xiangfei , Liu, Niuniu et al. Creep Properties of Cylinder Metal Rubber under Static Compression at Elevated Temperatures [J]. | SYMMETRY-BASEL , 2023 , 15 (2) . |
| MLA | Lai, Fuqiang et al. "Creep Properties of Cylinder Metal Rubber under Static Compression at Elevated Temperatures" . | SYMMETRY-BASEL 15 . 2 (2023) . |
| APA | Lai, Fuqiang , Hao, Xiangfei , Liu, Niuniu , Wu, Yiwan , Xue, Xin , Bai, Hongbai . Creep Properties of Cylinder Metal Rubber under Static Compression at Elevated Temperatures . | SYMMETRY-BASEL , 2023 , 15 (2) . |
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