Results 21 to 30 of about 1,128,528 (166)
ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
UUV(unmanned underwater vehicle,无人水下航行器)在海洋民用与军事领域具有广阔的应用前景。UUV耐压结构作为影响UUV负载能力及保障UUV航行任务安全高效执行的重要部件,其优化设计有重要意义。为了最大程度地实现减重目标,有效平衡耐压结构质量、结构强度和稳定性之间的矛盾,进而提升UUV综合性能,提出一种基于组合加权响应面法的多目标优化方法。通过试验设计得到初始采样点,利用有限元工具计算响应值并构建代理模型;然后,以折衷规划法对子目标进行归一化处理 ...
郑荣, 于延凯, 朱兴华, 高启升
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ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao +8 more
wiley +1 more source
可靠性是财务会计的核心概念。可靠性与相关性“统御”的会计信息质量特征是联结信息使用者需求(体现在会计目标上)和信息生产过程(确认、计量、报告)的“钮结”。具体而言,相关性指向的是信息使用者的外在需求,而可靠性映射出的是财务会计这一信息生产系统的本质属性。人们对会计信息“量的需求”和财务会计自身“质的规定”之间的矛盾往往集中反映在对相关性和可靠性“孰重孰轻”的价值判断,以及随之形成的可靠性——相关性均衡之上。随着信息使用者群体中投资者比重的日益增大,人们越来越重视不确定性程度较高的前瞻性经济信息 ...
陈一江
core
可靠性技术是以概率论为理论基础、以数理统计为基本方法的一门新技术。它包括可靠性设计、可靠性制造、可靠性管理、可靠性试验以及失效分析等很多内容。 本书在绪论中对可靠性的基本概念作了简单的介绍,第一章至第六章分别阐述了可靠性数学基础,可靠性特征量、可靠性统计、可靠性试验 ...
吴
doaj
为提高对大电流接地开关设计结构的认识,提高设计可靠性,文中对某型号发电机断路器成套装置用接地开关进行了设计研究。接地开关体积小,动热稳定性考核严苛,采用经验公式与仿真分析相结合的方法,完成了满足短时耐受电流130 kA(3 s)、峰值耐受电流390 k A参数条件的接地开关设计,并通过动热稳定型式试验验证了设计的合理性和可靠性。
弟泽龙 +4 more
doaj
ABSTRACT Phase‐change memory (PCM), characterized by its reversible transition between crystalline and amorphous phases, has emerged as a promising candidate for neuromorphic memory computing applications. However, conventional PCM devices lack an insufficient RESET/SET voltage ratio, which often leads to incorrect recording of the RESET state and ...
Zihan Liu +8 more
wiley +1 more source
本文运用可靠性设计理论和最优化设计技术,提出了2K-H行星齿轮减速器的可靠性优化设计方法;建立了可靠性优化设计数学模型;最后给出了优化方法和程序框图。
王剑彬
doaj
ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin +9 more
wiley +1 more source
在可靠性理论分析的基础上,以断路器操动机构中的连杆零件为例,进行可靠性设计,并给出对一般零件的可靠性设计的方法。经仿真及样机检测,验证该设计方法是符合工程设计要求的。
赵跃华, 马履中, 张际先
doaj

