Results 31 to 40 of about 2,255 (128)
Haiyang gongcheng zhuangbei yu jishu, 2015 引入了一种多轴疲劳寿命评估方法,并对该方法的疲劳评估流程进行研究.使用该方法联合热点应力法对国际公开发表的250多个疲劳试验数据进行多轴疲劳寿命预测,验证了该方法多轴疲劳寿命预测的精确度.最后使用该方法成功对自升式平台K型桩腿节点进行了多轴疲劳寿命评估,可为提高桩腿节点疲劳寿命预测的准确性提供有益参考.
刘英芳 +5 more
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New Phytologist, Volume 251, Issue 3, Page 1267-1282, August 2026.Biosynthesis and accumulation of tanshinones in the periderm of Salvia miltiorrhiza during secondary root growth. Summary Perennial herbs develop long‐lived roots that undergo repeated cycles of secondary growth, during which the periderm functions as a protective barrier and a major site of specialized metabolite accumulation.
Licheng Liu +19 more
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Haiyang gongcheng zhuangbei yu jishu, 2023 中国南海油气田开发采用玻璃钢防护罩，保护水下生产系统的关键设施。玻璃纤维增强复合材料（玻璃钢）是目前最为常用的复合材料，广泛应用于船舶与海洋工程领域。本文通过建立玻璃钢耐海水腐蚀寿命模型，定义弯曲强度保持率，得到耐海水腐蚀寿命通用方程和深海低温条件下耐海水腐蚀寿命公式。结合常温和高温海水长期浸泡条件下的弯曲强度试验结果，预测得到玻璃纤维增强乙烯基酯复合材料在0~4℃海水温度范围内的耐腐蚀寿命约为12.28~16.55年。从弯曲强度的角度来看，耐腐蚀寿命较短，建议应用在承受低弯曲载荷的部位。
刘晓, 刘程程, 刘晓彬
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Laser powder bed fusion (LPBF) of Inconel 718 alloy inevitably introduces pronounced microstructural anisotropy, typified by columnar grains and robust crystallographic texture. This results in direction‐dependent fatigue behavior, raising critical reliability concerns for high‐stakes aerospace applications.
Zhifang Shi +9 more
wiley +1 more source
Gaoya dianqi, 2011 探讨了目前国内外在GIS状态监测技术、剩余寿命评估方法等方面的研究现状,指出现有技术在GIS剩余寿命评估方面的缺陷,提出了超高压GIS剩余寿命评估方法的总体构想及发展趋势。
李东妍 +5 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian +7 more
wiley +1 more source
Gaoya dianqi, 1993 阐述了真空断路器电寿命试验的重要性和用降低电压法进行真空断路器电寿命试验的基本原理。详细介绍了用微机控制和测试真空断路器电寿命试验的方法、原理及试验结果。
贾申利, 王季梅, 王毅
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) have attracted increasing attention in energy storage owing to their high energy density, low redox potential, and cost‐effectiveness. Nevertheless, uncontrolled dendrite accumulation, gas generation, and severe side‐reaction problems hinder the cycling lifespan, which prevents their commercial applications ...
Xiangzhong Kong +8 more
wiley +1 more source
Guangtongxin yanjiu, 1989 本文介绍InGaAsP/InPDC—PBH型LD单管寿命试验、初期筛选老化及高低温循环实验情况。其结果是50℃时MTTF大于4000小时,采用0.9eV激活能外推室温（20℃）下,中值寿命大于10万小时,所观察到的寿命模式符合对数正态分布。
杨桂生 +3 more
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Gaoya dianqi, 1987 触发真空开关是一种新型的高压脉冲开关。本文介绍了这种开关在应用中遇到一个重要问题——触发寿命问题。其中重点阐述了开关触发极的结构和特点,影响触发寿命的因素以及提高触发寿命的方法。
吴汉基 +6 more
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