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学者姓名：赖福强
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Abstract ：
Textured surfaces have been widely applied in the field of engineering for friction reduction, but research on the effects of different texture design parameters on the wear and fatigue resistance of bearing steel remains insufficiently explored. In order to improve the anti-wear and anti-fatigue performance and prolong the service life of bearing steel, surface texturing technology was applied to fabricate textured GCr15 bearing steel materials. In this work, micro-groove surface texture was designed by hydrodynamic theory, then, it was fabricated on the GCr15 bearing steel surface using nanosecond laser processing. The depths (15 mu m, 30 mu m), spacing (100 mu m, 200 mu m, 300 mu m), and friction angles (30 degrees, 60 degrees, 90 degrees) of micro groove were selected as the primary parameters for micro groove fabrication. The friction and wear tests and rolling contact fatigue (RCF) tests were conducted to investigate the lubrication tribological properties. The results indicated that micro-groove spacing of 300 mu m significantly reduces the coefficient of friction (CoF), depth of 30 mu m produces a higher hydrodynamic pressure, and friction angle of 60 degrees has a lower CoF value. Compared to the untextured samples, the RCF life of micro-groove surface texture sample is improved, and the median RCF life is increased by 36.5%. And it could be attributed to the dispersion effect of micro-groove surface texture on stress concentration. The findings indicate that a well-designed micro-groove structure can enhance the fluid dynamic pressure lubrication effect to a certain degree. In comparison to smooth surface specimens, those with micro-grooves exhibit reduced friction.
Keyword ：
anti-friction mechanism anti-friction mechanism hydrodynamic lubrication effect hydrodynamic lubrication effect lubrication tribological properties lubrication tribological properties Micro-groove surface texture Micro-groove surface texture rolling contact fatigue rolling contact fatigue
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| GB/T 7714 | Lai, Fuqiang , Cao, Changsheng , Chen, Huanghuang et al. Influence of micro-groove surface texture on the lubrication tribological properties of GCr15 bearing steel [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY , 2025 . |
| MLA | Lai, Fuqiang et al. "Influence of micro-groove surface texture on the lubrication tribological properties of GCr15 bearing steel" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY (2025) . |
| APA | Lai, Fuqiang , Cao, Changsheng , Chen, Huanghuang , Lin, Chang , Song, Chenfei , Lei, Kangjie et al. Influence of micro-groove surface texture on the lubrication tribological properties of GCr15 bearing steel . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY , 2025 . |
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This study presents a new surface strengthening technique (cold upsetting manufacturing process) for engine valve seating face (VSF). The properties of the Ni30 superalloy VSF were characterized before and after cold upsetting. Compared to the solution-aging treatment (SAT) valve, the solution-cold upsetting-aging treatment (SCUAT) valve hardness was increased by 60 HV0.2. SCUAT valves exhibited higher internal dislocation degrees and local misorientation than SAT valves. Bench-top wear tests at 650 degrees C and 750 degrees C were conducted. The valve wear loss at 650 degrees C was higher than that at 750 degrees C. SCUAT valves show better wear resistance, with a total wear loss reduction up to 26.76 %. The SCUAT valve-seat insert contact pair wear mechanisms are adhesive and fatigue wear.
Keyword ：
Internal combustion engine exhaust valve Internal combustion engine exhaust valve Plastic deformation processing Plastic deformation processing Valve seating face Valve seating face Wear mechanisms Wear mechanisms
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| GB/T 7714 | Lai, Fuqiang , Cao, Changsheng , Shi, Chuangwei et al. Improvement of wear resistance for engine valve: Introducing cold upsetting treatment on valve seating face [J]. | WEAR , 2025 , 564-565 . |
| MLA | Lai, Fuqiang et al. "Improvement of wear resistance for engine valve: Introducing cold upsetting treatment on valve seating face" . | WEAR 564-565 (2025) . |
| APA | Lai, Fuqiang , Cao, Changsheng , Shi, Chuangwei , Sun, Ge , Qu, Rong , Mo, Dongqiang et al. Improvement of wear resistance for engine valve: Introducing cold upsetting treatment on valve seating face . | WEAR , 2025 , 564-565 . |
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This study addresses the enhancement of thermal stability of zinc alloys, which commonly experience reduced mechanical performance beyond 100 degrees C. The 304 stainless steel wires (SSWs) were utilized to fabricate a 3D porous metal rubber (MR) skeleton, facilitating the infusion of molten zinc alloys (ZA8) via squeeze casting to prepare MR/ZA8 composites. The impact of varying SSW volume fractions on the static compression creep (SCC) behavior of the MR/ZA8 composites at 250 degrees C was investigated, while exploring their SCC failure mechanisms. Energy dispersive spectrometer was used to analyze the MR/ZA8 composites both before and after the creep experiments. Findings revealed that in comparison to ZA8, MR/ZA8 composites exhibited notably lower SCC strain, diminishing with the increased SSW volume fraction. Under the applied stresses of 12 MPa, 17 MPa and 20.4 MPa, the steady-state SCC rate of MR/ZA8 composites experienced a reduction of 1 order of magnitude compared to ZA8. The apparent stress exponent n value ranged from 3.37 to 4.84, indicating a SCC mechanism dominated by dislocation climb within the two materials. The elemental composition of the MR/ZA8 composites remained largely unchanged, and the MR skeleton in the MR/ZA8 did not undergo oxidation.
Keyword ：
Failure mechanism Failure mechanism Metal rubber skeleton Metal rubber skeleton Squeeze casting Squeeze casting Static compression creep behavior Static compression creep behavior Zinc alloy matrix composite Zinc alloy matrix composite
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| GB/T 7714 | Lai, Fuqiang , Zhou, Ziang , Hu, Anqiong et al. Static compression creep behavior of MR/ZA8 composite at elevated temperature [J]. | MATERIALS TODAY COMMUNICATIONS , 2025 , 42 . |
| MLA | Lai, Fuqiang et al. "Static compression creep behavior of MR/ZA8 composite at elevated temperature" . | MATERIALS TODAY COMMUNICATIONS 42 (2025) . |
| APA | Lai, Fuqiang , Zhou, Ziang , Hu, Anqiong , Gao, Guilin , Wu, Yiwan , Zhang, Guosen et al. Static compression creep behavior of MR/ZA8 composite at elevated temperature . | MATERIALS TODAY COMMUNICATIONS , 2025 , 42 . |
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3D-Kagome lattice sandwich panels are mainly composed of upper and lower panels and a series of symmetrically and periodically arranged lattices, known for their excellent high specific stiffness, high specific strength, and energy absorption capacity. The inherent geometrical symmetry of the 3D-Kagome lattice plays a crucial role in achieving superior mechanical stability and load distribution efficiency. This structural symmetry enhances the uniformity of stress distribution, making it highly suitable for automotive vibration suppression, such as battery protection for electric vehicles. In this study, a polyurethane foam-filled, symmetry-enhanced 3D-Kagome sandwich panel is designed following an optimization of the lattice structure. A novel fabrication method combining precision wire-cutting, interlocking core assembly, and in situ foam filling is employed to ensure a high degree of integration and manufacturability of the composite structure. Its mechanical properties and energy absorption characteristics are systematically evaluated through a series of experimental tests, including quasi-static compression, three-point bending, and low-speed impact. The study analyzes the effects of core height on the structural stiffness, strength, and energy absorption capacity under varying loads, elucidating the failure mechanisms inherent to the symmetrical lattice sandwich configurations. The results show that the foam-filled sandwich panels exhibit significant improvements in mechanical performance compared to the unfilled ones. Specifically, the panels with core heights of 15 mm, 20 mm, and 25 mm demonstrate increases in bending stiffness of 47.3%, 53.5%, and 51.3%, respectively, along with corresponding increases in bending strength of 45.5%, 53.1%, and 50.9%. The experimental findings provide a fundamental understanding of foam-filled lattice sandwich structures, offering insights into their structural optimization for lightweight energy-absorbing applications. This study establishes a foundation for the development of advanced crash-resistant materials for automotive, aerospace, and protective engineering applications. This work highlights the structural advantages and crashworthiness potential of foam-filled Kagome sandwich panels, providing a promising foundation for their application in electric vehicle battery enclosures, aerospace impact shields, and advanced protective systems.
Keyword ：
3D-Kagome lattice sandwich panel 3D-Kagome lattice sandwich panel energy absorption energy absorption impact resistance impact resistance mechanical property mechanical property polyurethane foam filling polyurethane foam filling
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| GB/T 7714 | Wu, Zhangbin , Li, Qiuyu , Chai, Chao et al. Experimental Investigation into the Mechanical Performance of Foam-Filled 3D-Kagome Lattice Sandwich Panels [J]. | SYMMETRY-BASEL , 2025 , 17 (4) . |
| MLA | Wu, Zhangbin et al. "Experimental Investigation into the Mechanical Performance of Foam-Filled 3D-Kagome Lattice Sandwich Panels" . | SYMMETRY-BASEL 17 . 4 (2025) . |
| APA | Wu, Zhangbin , Li, Qiuyu , Chai, Chao , Chen, Mao , Ye, Zi , Qiu, Yunzhe et al. Experimental Investigation into the Mechanical Performance of Foam-Filled 3D-Kagome Lattice Sandwich Panels . | SYMMETRY-BASEL , 2025 , 17 (4) . |
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K417G superalloy is widely applied in gas turbine components such as blades, vanes, and nozzles. In this work, the oxidation behavior and mechanism of K417G alloy prepared by wide-gap brazing were investigated in air at 800, 900, 1000, and 1100 °C. Microstructures of the bonded joints differ in the wide-gap braze region (WGBR) and base metal (BM). The surface and cross-sectional morphology, composition, and structure of specimens were analyzed by XRD, SEM, and EDS after oxidation tests. The experimental data demonstrate that the WGBR (wide-gap brazed region) exhibits markedly superior oxidation resistance compared to the BM (base material) under elevated-temperature conditions exceeding 1000 °C. This performance disparity is quantitatively validated by oxidation kinetics analysis, where the weight gain curve of the WGBR demonstrates parabolic oxidation kinetics, as evidenced by its significantly lower parabolic rate constant relative to the BM. The oxide layers of the BM and WGBR are similar after oxidation at high temperatures of 800–900 °C, and they consist of an outermost layer of NiO, a middle mixed layer of Cr2O3, and an innermost layer of dendritic Al2O3. However, when the temperature is between 1000 and 1100 °C, the NiO on the surface of the BM spalls of due to thermal expansion coefficient mismatch in coarse-grained regions, resulting in oxidation mainly divided into outer layer Cr2O3 and inner layer Al2O3 and TiO2. Under high-temperature oxidation conditions (1000–1100 °C), a structural transition occurs in the oxide scale of the BM, with the underlying mechanism attributable to grain-coarsening-induced oxide scale destabilization. Specifically, the coarse-grained structure of the BM (characteristic grain size exceeding 50 μm) is exhibited. Therefore, the WGBR demonstrates outstanding oxidation resistance, as evidenced by the formation of a continuous Al2O3 scale with parabolic rate constants of about 1.38 × 10−3 mg2·cm−4·min−1 at 1100 °C. © 2025 by the authors.
Keyword ：
Coarsening Coarsening Electric brazing Electric brazing Thermooxidation Thermooxidation Titanium dioxide Titanium dioxide
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| GB/T 7714 | Cheng, Zhun , Lai, Xin , He, Jing et al. Microstructural Investigation and High-Temperature Oxidation Performance of K417G Alloy Prepared by Wide-Gap Brazing [J]. | Crystals , 2025 , 15 (5) . |
| MLA | Cheng, Zhun et al. "Microstructural Investigation and High-Temperature Oxidation Performance of K417G Alloy Prepared by Wide-Gap Brazing" . | Crystals 15 . 5 (2025) . |
| APA | Cheng, Zhun , Lai, Xin , He, Jing , Li, Xiaoqiang , Fan, Jiafeng , Lai, Fuqiang . Microstructural Investigation and High-Temperature Oxidation Performance of K417G Alloy Prepared by Wide-Gap Brazing . | Crystals , 2025 , 15 (5) . |
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金属橡胶（MR）是一种纯金属的多孔减振/隔振材料，可作为极端环境下传统高分子减振/隔振材料的绝佳代替者。然而，目前关于其在海洋环境中的腐蚀行为及静载压缩蠕变性能研究还较少，影响了金属橡胶的进一步工程应用推广。采用表面硅烷化（S）、化学酸洗（P）和化学酸洗-表面硅烷化（P-S）工艺对制备好的MR试样进行表面处理，得到三种不同表面性能的MR试样。在5wt.%NaCl溶液中进行间浸腐蚀方式的静载压缩蠕变试验，并利用SEM、EDS和电化学工作站等表征手段研究MR的微观形貌、腐蚀产物元素组成、耐腐蚀和抗蠕变性能。结果表明：间浸腐蚀蠕变试验后，三种试样的腐蚀产物元素以O、Fe和Cr为主。P-S-MR试样的腐蚀电位(E
Keyword ：
海洋腐蚀环境 海洋腐蚀环境 硅烷化 硅烷化 腐蚀行为 腐蚀行为 蠕变性能 蠕变性能 金属橡胶 金属橡胶
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| GB/T 7714 | 赖福强 , 胡安琼 , 郝翔飞 et al. 金属橡胶在不同表面处理工艺下的腐蚀行为及静载压缩蠕变性能 [J]. | 中国表面工程 , 2025 , 38 (01) : 141-151 . |
| MLA | 赖福强 et al. "金属橡胶在不同表面处理工艺下的腐蚀行为及静载压缩蠕变性能" . | 中国表面工程 38 . 01 (2025) : 141-151 . |
| APA | 赖福强 , 胡安琼 , 郝翔飞 , 白鸿柏 , 任志英 , 吴乙万 . 金属橡胶在不同表面处理工艺下的腐蚀行为及静载压缩蠕变性能 . | 中国表面工程 , 2025 , 38 (01) , 141-151 . |
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Passive vibration isolation techniques with low-frequency characteristics have been a hot topic in the aerospace field. A hydraulic inertial vibration isolator is a highly effective type of isolator for controlling low-frequency vibrations. It typically consists of a main spring, a minor spring, an inertial mass, and a fluid domain. Due to its multi-domain nature, analyzing the isolation mechanism of this type of isolator is challenging. The bond graph method is employed to establish the dynamic model of the isolator. Subsequently, the state equations of the isolator are derived, and the energy equations of both the mechanical and the fluid parts of the isolator are obtained. Based on this, the energy transfer characteristics between the mechanical and fluid domains inside the isolator under external excitation are discussed. The time-domain response of the forces transmitted to the foundation is analyzed. It is shown that the anti-resonance frequency occurs when the forces transmitted to the foundation generated by the main spring and the fluid pressure are equal to that of the minor spring. To verify the proposed method's correctness, a prototype of the isolator is designed and a carefully designed experiment is conducted. The acceleration transmissibility of the isolator is used to conduct a comparative study. The results show that the theoretical results are in good agreement with the experimental results. To depict the dynamic characteristics of the isolator under large amplitude vibration, the nonlinear dynamic model of the isolator is developed, and the corresponding force transmissibility of the isolator is formulated. The energy flow between the mechanical and the fluid domains under this condition is also analyzed. The results indicate that the energy flow responses exhibit a similar change tendency to the force transmissibility. However, the peak of the energy ratio between the mechanical subsystem and the fluid is the same as the linear condition, suggesting that this value is determined by the amplification ratio of the isolator. This research provides enhanced physical insight to understand the dynamic characteristics of this type of isolator and will help to shorten the design cycle of the isolator.
Keyword ：
acceleration transmissibility acceleration transmissibility bond graph bond graph energy transfer energy transfer hydraulic inertial isolator hydraulic inertial isolator multi-energy-domain multi-energy-domain
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| GB/T 7714 | Liu, Niuniu , Li, Cheng , Zhang, Liwei et al. The Bond Graph Modeling and Experimental Verification of a Hydraulic Inertial Vibration Isolator Including Nonlinear Effects [J]. | AEROSPACE , 2024 , 11 (8) . |
| MLA | Liu, Niuniu et al. "The Bond Graph Modeling and Experimental Verification of a Hydraulic Inertial Vibration Isolator Including Nonlinear Effects" . | AEROSPACE 11 . 8 (2024) . |
| APA | Liu, Niuniu , Li, Cheng , Zhang, Liwei , Lei, Zhiyang , Yang, Jing , Lai, Fuqiang . The Bond Graph Modeling and Experimental Verification of a Hydraulic Inertial Vibration Isolator Including Nonlinear Effects . | AEROSPACE , 2024 , 11 (8) . |
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Debonding at the wire/matrix interface is a critical failure mode for spiral skeleton-polyurethane composites. In this work, the interfacial damage characteristics were determined using a finite element model based on the cohesive contact approach. The cohesive surface quadratic stress criterion (CSQUADSCRT) and cohesive surface damage (CSDMG) were used to characterize the damage state of the interface. The results indicate that the stress shifts along the loaded direction during interface damage. As the matrix thickness and embedded depth increased, the pull-out load increased, whereas the failure displacement decreased. Using the base contact mode results in a significantly smaller damage displacement compared to the case without base contact. When the strain of the spiral wire composite is 0.4, no damage occurs at the composite interface. The stress and interface secondary tension damage factor of the spiral wire surface fluctuate, with damage at the loaded end face being significantly higher than at the vertically loaded end face.
Keyword ：
Adhesion Adhesion Composite materials Composite materials Interface damage Interface damage Mechanical properties Mechanical properties Spiral skeleton Spiral skeleton
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| GB/T 7714 | Xue, Xin , Ye, Zixiong , Lai, Fuqiang . Interfacial damage analysis of spiral skeleton-polyurethane composites based on a cohesive contact approach [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
| MLA | Xue, Xin et al. "Interfacial damage analysis of spiral skeleton-polyurethane composites based on a cohesive contact approach" . | MATERIALS TODAY COMMUNICATIONS 41 (2024) . |
| APA | Xue, Xin , Ye, Zixiong , Lai, Fuqiang . Interfacial damage analysis of spiral skeleton-polyurethane composites based on a cohesive contact approach . | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
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As a nickel -based alloy, GH4169 has the properties of excellent corrosion resistance, high temperature oxidation resistance and high creep resistance. In this paper, the compression creep behaviors of cylinder entangled wire materials (CEWMs) made from metal wires (GH4169 nickel -based alloy, 304 stainless steel) were investigated at elevated temperatures (from 400 degrees C to 500 degrees C). The performance degradation of the two materials was evaluated by the variation amplitude of four mechanical properties parameters and material characterization methods. The results indicated that both of 304 CEWMs and GH4169 CEWMs suffered a significant performance degradation at elevated temperatures, and both of the two CEWMs showed a much serious performance degradation above 450 degrees C (tempering temperature). Compared to the 304 CEWMs at the tested temperatures, the GH4169 CEWMs obtained better creep resistance. It is therefore concluded that the GH4169 CEWM is an excellent material that can replace the commonly used 304 CEWM at elevated temperature work conditions.
Keyword ：
Creep Creep Cylinder entangled wire material Cylinder entangled wire material Nickel -based alloy wire Nickel -based alloy wire Performance degradation evaluation Performance degradation evaluation Porous materials Porous materials
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| GB/T 7714 | Lai, Fuqiang , Gao, Guilin , Zhou, Congjian et al. Compression creep behaviors of GH4169 cylinder entangled wire material at elevated temperatures [J]. | MATERIALS LETTERS , 2024 , 371 . |
| MLA | Lai, Fuqiang et al. "Compression creep behaviors of GH4169 cylinder entangled wire material at elevated temperatures" . | MATERIALS LETTERS 371 (2024) . |
| APA | Lai, Fuqiang , Gao, Guilin , Zhou, Congjian , Wu, Yiwan , Xue, Xin . Compression creep behaviors of GH4169 cylinder entangled wire material at elevated temperatures . | MATERIALS LETTERS , 2024 , 371 . |
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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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