Results 31 to 40 of about 992,119 (152)
Gaoya dianqi, 2015 线芯温度是反映电缆正常运行与否的重要参数,线芯温度过高会加速电缆绝缘老化,导致电缆绝缘水平降低。针对电缆线芯温度测量一直缺乏有效监测方法的问题,笔者提出基于电缆绝缘层温度和运行电流计算电缆线芯温度的方法。根据10 kV矿用高压电缆物理结构,建立了线芯温度计算模型,设计了电缆线芯动态温度实验方案,采用红外热像仪测量剥去护套的电缆绝缘层温度和线芯温度,利用热路模型反演计算线芯温度,并进行了实验验证。实验结果表明,线芯温度计算值与测量值之间的误差低于5%,监测方法满足电缆线芯温度实时监测要求。
苏文 +5 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Alkali metal (Li, Na, and K) batteries (AMBs) have attracted widespread attention in recent years because of their high theoretical specific capacity and attractive energy density. However, they still suffer from uncontrollable dendrite growth and sluggish conductivity during cycling, which lead to security issues and inferior cycling ...
Yong Liu +11 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 大跨度空间结构具有杆件众多、高次超静定、温度效应复杂等特点,为研究日照下空间结构的温度效应大小,设计制作了等边三角形平板网架模型进行温度试验。以实测数据为依据,研究网架模型温度与应力的关系以及温度变化所产生的温度应力、变形大小。结果表明,日照下网架模型温度与温度应力相关性明显,网架下弦温度应力最大,最大轴向应力可达64.2MPa,最大弯曲应力可达15.85MPa;上弦温度应力最小,最大轴向应力只有18.8MPa;网架下弦靠近支座节点变形最大,最大值可达0.5mm ...
李景芳 +4 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The design and synthesis of highly efficient electrochemical sensors are pivotal to electrochemical conversion technologies. This study successfully synthesized a composite material comprising two‐dimensional (2D) conductive MXene and nickel‐based metal–organic framework (Ni‐MOF) by stirring at room temperature.
Hai‐Xia Wu +8 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The limited crack resistance of coarse grain boundaries and coarse interfaces leads to an incompatibility between high‐temperature strength and ductility in TiAl alloys. Tailoring stress‐oriented textures and multiscale heterogeneous interfaces can effectively impede crack propagation, thereby overcoming this trade‐off.
Kexuan Li +7 more
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, 2016 本发明提供了一种温度控制系统，包括相变储热装置、散热装置、冷却装置和温度监控装置；相变储热装置连接热源与散热装置，相变储热装置能够与热源、散热装置进行热量交换；冷却装置适用于冷却散热装置，温度监控装置被配置以监控散热装置的温度并联动控制冷却装置的工作状态。本发明的温度控制系统，易于实现精确的温度控制，提高了温度控制的精度 ...
徐宇杰, 杨旸, 张文武
core
Zhendong Ceshi yu Zhenduan切削温度是影响机械破岩刀具磨损特性及服役寿命的核心因素，外部激振辅助碟形滚刀虽可提升破岩性能，但振动破岩过程中滚刀切削温度演变规律尚不明确。针对这一问题，基于热力耦合数值仿真与实验验证，开展滚刀振动破岩切削温度变化规律及影响机制研究。首先，在滚刀振动破岩有限元模型中引入热力耦合作用，通过数值模拟分析切削温度动态变化特征；其次，开展室内振动破岩实验，采用红外热像仪实时监测滚刀切削温度；然后，对比实验与仿真数据，验证数值模型模拟切削温度的可靠性；最后，结合温度时程曲线与岩石破碎形貌 ...
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT In Co‐based alloys, the γ phase is normally stable at high temperatures and the ε phase at low temperatures, and there is a martensitic transition on cooling to ∼417°C. In the γ/β dual‐phase CoCrAlY bond coat of turbine blade thermal barrier coating systems, we observed the opposite: γ remained stable at room temperature, yet it underwent a γ →
Junkai Liu +8 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Fast‐charging capability is one of the crucial factors determining the application prospects of sodium‐ion batteries (SIBs). Nevertheless, the mismatched sodium storage kinetics and Coulombic efficiency (CE) in hard carbon anodes are bottlenecks in the implementation of fast‐charging SIBs. Herein, we propose a facile pre‐carbonization strategy
Qixin Liu +8 more
wiley +1 more source