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    Disciplines / Research questions

    制造科学

    19 个研究主题 · 46 个问题

    表面石墨烯改性是否能使金刚石刀具增加硬度和寿命？2 个问题

    1. Quantifying the inhibition chemistry and platelet-interface mechanics of two-dimensional-material additives against iron-catalyzed wear of monocrystalline diamond tools

    2. Electrophoretically deposited graphene as a solid lubricant on microcrystalline diamond films: validating deposition kinetics, environmental durability, third-body mechanism, and the protection–counterface wear trade-off

    并联可重构变胞机器人机构的奇异与分岔4 个问题

    1. Generalizing the three-series-connected Bennett construction of metamorphic 6R mechanisms and deriving closed-form bifurcation-existence criteria for the induced Goldberg–Bennett families

    2. Closed-form singular-surface equations for the 3-SvPS reconfigurable parallel mechanism

    3. Higher-order bifurcation revelation for metamorphic mechanisms induced by classical overconstrained linkages: discovery of tangent-but-curvature-different bifurcations

    4. Actuation and control for reliable motion-branch reconfiguration of the Bennett plano-spherical hybrid linkage and its evolved metamorphic parallel mechanism

    超大载荷伺服成形过程的并行驱动与控制2 个问题

    1. Extending the two-step calibration of multi-actuated servo presses with parallel topology beyond symmetry, synchronization, and purely kinematic error assumptions

    2. Production-fidelity dynamic modeling and gravity-counterbalance design for the large-capacity parallel servo press: the open further-work agenda of He, Gao, Bai and Wu (2013)

    冲蚀磨损机制及预测模型1 个问题

    1. A physics-based erosion model for liquid–solid flows: accounting for the factor-of-five accuracy gap in CFD-based erosion prediction

    打破光学设计“玻璃顶”的大口径薄膜透镜可否被制造出来？4 个问题

    1. Preparation and space-environment qualification of optical-grade copolyamide-imide membranes with diameters beyond 400 mm for space diffractive optics

    2. Extending vacuum-assisted self-contact photolithography to multilevel, larger-aperture membrane diffractive lenses

    3. Ring-width and spectral-sampling limits for large-aperture broadband achromatic multi-level diffractive lenses

    4. Scaling multi-order diffractive engineered (MODE) lenses to the 8.5-meter Nautilus aperture: segmented fabrication, alignment, and performance validation of ultralight diffractive primary optics

    电静液作动系统的功率与性能匹配问题2 个问题

    1. Velocity-conforming pump-displacement regulation and coordinated design of the active load-sensitive electro-hydrostatic actuator (ALS-EHA)

    2. Systematic design and validated control of the dual-pump, accumulator gravity-balanced electro-hydrostatic actuator (EHA-VPVM) under gravity loads

    复合材料结构的多尺度模拟2 个问题

    1. RVE size for random composites with local volume fraction variation: attainability of a usable finite RVE at high stiffness contrast

    2. Adaptive hybrid hierarchical/concurrent multiscale simulation of microstructural-instability-induced failure in finitely strained periodic composites: automatic critical-region identification and zoom-in criteria

    复杂大惯量机械系统微弱故障信息提取与分析2 个问题

    1. Adaptive parameter updating of the Hellinger-distance slow feature analysis framework for incipient fault detection and diagnosis of high-speed train running gear across seasonal ambient conditions

    2. Underdamped stochastic resonance with the bistable confining potential for weak fault diagnosis of rotating machinery

    复杂机电传动系统多维高频动力学问题及其控制1 个问题

    1. Aperiodic and chaotic vibration regimes of a spur gear–roller bearing system with simultaneous time-varying bearing and mesh stiffness: characterization, parameter and initial-condition dependence, and suppression by parameter selection

    复杂流场流量计算4 个问题

    1. Validity envelope of the two-eccentric-circle model for single-gamma horizontal Venturi wet gas metering beyond its validated conditions

    2. Velocity-profile corrections for single-path transit-time ultrasonic flowmeters: validity domains, the laminar-turbulent transition regime, and robust flow-rate inversion

    3. Universal wet-gas flow-rate correlation for Venturi differential-pressure meters: generalization beyond the two-phase mass flow coefficient's liquid-property, diameter-ratio, and size limits

    4. Applicability of the single-modality vortex cross-correlation wet-gas meter and its convection-coefficient model beyond the validated small-diameter, low-pressure envelope

    高性能人工肌肉2 个问题

    1. Micromechanics and ambient-air operation of electrochemically driven twisted and coiled conducting-polymer yarn actuators

    2. Completing the predictive mechanics of nylon twisted and coiled polymer actuators: manufacturing coiling dynamics, actuation torque, and rate-dependent and swelling response beyond the perfect-helix quasistatic model

    核废料存储容器的超长寿命设计2 个问题

    1. Defect-driven corrosion and predictive failure of copper-coated steel used-fuel containers over the evolving deep-repository environment

    2. A general, validated lifetime-prediction framework coupling mechanical and corrosion degradation for high-level nuclear waste disposal containers

    机械传动科学技术的发展历史与研究进展1 个问题

    1. Experimental validation, geometry-dependent loss modeling, and stage-count extension of the energy-effectiveness model for sun-gear-controlled multistage differential speed-change devices

    摩擦学系统磨损状态的在线辨识2 个问题

    1. Generalizability and transferability of acoustic-emission wear-stage diagnostics across materials and operating conditions

    2. Autonomous, transferable, and mode-aware wear prediction from on-line wear-debris concentration monitoring of gearboxes

    摩擦诱导活性生物组织演变调控机理3 个问题

    1. Vertex-dependent friction and parameter identifiability in stochastic epithelial vertex models of tissue growth

    2. First-principles computation of Onsager-like degradation–healing coefficients and healing kinetics for friction-induced surface self-organization and self-healing

    3. Quantitative molecular-to-tissue basis of interfacial friction at the prechordal plate-neurectoderm interface in zebrafish gastrulation

    摩擦噪声发生机理：一个困扰摩擦学和振动噪声学界一百多年的科学难题3 个问题

    1. Quantitative establishment of the detachment–reattachment mechanism of friction-induced vibration and noise in real brake systems: validation, onset thresholds, and contact-dynamics-based suppression

    2. Friction-induced vibration and noise of water-lubricated marine stern tube bearings under stochastic rough-surface excitation: integrated predictive modeling, mechanism closure, and validation

    3. Generation mechanism of railway curve squeal under non-negative damping: experimental identification and validation of the roles of vertical contact dynamics, mode coupling, and instantaneous creepage

    摩擦自旋电子学问题4 个问题

    1. Quantifying spin friction in atomic-scale manipulation on the noncollinear Mn/W(110) spin spiral

    2. Microscopic foundation and robustness of friction-induced spin polarization with spin-orbit coupling

    3. Spin friction of exchange-coupled local moments beyond the perturbative regime: nonlocal Gilbert damping at strong coupling, electronic criticality, and strong correlation, with retardation (inertia) and multi-orbital extensions

    4. Experimental realization of the sliding spin current in two-dimensional magnetic sliding ferroelectrics

    输流管路的流固耦合振动1 个问题

    1. Dynamic thick-wall extension of the fluid–structure-interaction water-hammer model: radial inertia, external-medium coupling, and validation for very thick pipes

    微纳结构形貌对润湿行为的影响规律4 个问题

    1. Extending the validated phase-field wetting model of LIPSS-structured silicon to anisotropic roughness, hydrophobic regimes, and graded surfaces for controlled droplet transport

    2. Nanoscale wettability of hierarchical copper nanostructures: geometry-to-contact-angle design principles and the breakdown of the Wenzel model at short groove widths

    3. Critical conditions and De-pinning/Sag crossover for evaporation-driven wetting transitions of droplets on three-dimensional micropillar arrays

    4. Origin and boundaries of the sunny-side-up wetting state and the spontaneous Cassie-Wenzel collapse on silicon microcone arrays

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