Results 21 to 30 of about 6,395 (115)
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 Ultrathin, lightweight, and mechanically compliant electromagnetic interference (EMI) shields are increasingly required for high‐frequency electronic devices. However, conventional metallic shields predominantly rely on conductivity‐driven reflection mechanisms, which become ineffective at reduced thickness and may cause severe secondary ...
Zida Zhang +7 more
wiley +1 more source
Questa è una mini opera filosofico-scientifica che unisce riflessione e descrizione per esplorare l’origine, l’evoluzione e il destino dell’universo. Nasce dal desiderio di coniugare la profondità lirica della filosofia con la concretezza descrittiva della fisica, proponendo una nuova visione: l’universo non come frutto di perfezione, ma come ...
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Jianzhu Gangjiegou Jinzhan基于扩孔螺栓连接型耗能段和自复位SMA支撑，提出一种新型自复位耗能段，具有强耗能、高延性、低残余变形和低损伤等特点，可进一步提高偏心支撑结构的抗震性能和震后功能恢复能力。分别设计3个考虑摩擦滑移的自复位耗能段和1个普通自复位耗能段试验模型，并进行往复加载研究，得到其变形或破坏模式、滞回曲线和骨架曲线等。结果表明，滑移阶段耗能段处于相对静止状态，所有构件均处于弹性；非滑移阶段中耗能段依次发生滑移、屈服、翼缘和腹板屈曲现象，整个过程中自复位SMA支撑中SMA受拉，并为自复位耗能段提供承载力、耗能能力和复位力。
张波 +4 more
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Jianzhu Gangjiegou Jinzhan, 2022 基于削弱耗能梁截面尺寸的原理，提出了一种新型带弯剪屈服耗能梁段的K形偏心支撑钢框架结构。为验证其抗震性能，完成了1个1∶2.6缩尺的单层、单榀、单跨模型的拟静力试验。结果表明，试验模型的塑性变形基本局限在耗能梁段上，且主要通过耗能梁端部上、下翼缘和中部的腹板耗散能量，试件表现出较好的耗能能力和延性。为进一步研究其抗震性能，在试验模型的基础上改变了中部剪切型耗能梁（简写为SL）的长度lm，采用ABAQUS有限元软件建立了8个数值模型并对之进行了滞回性能分析，分析了滞回曲线、承载力、刚度及耗能能力等随lm ...
陈世玺 +5 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Advanced metallic glasses, leveraging their ultrahigh strength, excellent corrosion resistance, superior soft magnetic properties and good biocompatibility, have gradually become indispensable strategic cornerstones in critical fields such as aerospace, electronic information and energy power. This unique combination of properties enables them
Yizhou Liu +11 more
wiley +1 more source
Gongye shui chuli, 2018 污水处理是能耗密集型技术，为了能对污水处理过程进行合理的能耗评估和降低污水处理能耗，各国研究学者在此方面都做了大量的研究工作。文章从污水处理厂能耗现状入手，对能耗评估指标、能耗基准线的划定方法、能源效率提高办法、能源监管等几个方面进行了综述。通过分析发现，污水处理厂的能源效率通过评估和管理是可以大幅度提升的，将来还有很多值得研究的空间。
李云 +4 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Many metallic components are frequently subjected to coupled environments of friction and vibration, stemming from interfacial contact and relative motion between mating parts or external stimuli. Consequently, it is imperative for these components to exhibit a synergy of high wear resistance and superior damping properties.
Ze Pu +12 more
wiley +1 more source
Gongye shui chuli能耗是制约海水反渗透淡化规模化应用与可持续发展的关键因素。为识别系统节能潜力并厘清不同单元过程的能耗贡献，本文基于可逆热力学原理和理想化泵送模型，构建了海水反渗透系统能耗评估框架，将系统单位产水能耗重点分解为反渗透脱盐过程的理论最低能耗、取水泵送能耗和浓海水排放泵送能耗，并对预处理及后处理等辅助单元的系统边界进行了讨论。通过情景分析，系统评估了回收率、进料盐度、取水等效总扬程、稀释倍数和水泵效率等关键参数对系统能耗构成的影响，并在此基础上将理论计算结果与商业化海水淡化厂的实际运行能耗进行了对比分析 ...
黄洪伟, 罗勇, 于杰, 宋瀚文
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耗能梁段布置方式对含可更换剪切型耗能梁段的高强钢框筒结构抗震性能的影响
Jianzhu Gangjiegou Jinzhan, 2020 针对传统钢框筒结构地震耗能差、震后修复难度大和难以实现"强柱弱梁"的设计理念等问题,提出了一种新型高层钢结构体系——含可更换剪切型耗能梁段的高强钢框筒结构(HSS-FTS)。为研究耗能梁段布置方式对HSS-FTS抗震性能的影响,设计了30层的HSS-FTS系列算例并建立其有限元模型,依据提出的耗能梁段布置原则,给出了6种不同的耗能梁段布置方式。验证了有限元建模的合理性,对有限元模型分别进行反应谱分析、静力Pushover分析和动力弹塑性时程分析。分析结果表明:HSS-FTS改善了传统钢框筒结构的耗能能力,
张浩, 连鸣, 苏明周
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