Research on degradation failure of insoluble brittle poymer/ soluble additive composites 疏水脆性聚合物/水溶性添加剂复合材料的水中降解失效研究
Coil current based qualitative classification and recognition of electromagnetic valve degradation failure 基于驱动端线圈电流电磁阀缓变失效分类识别方法
Statistical Analysis of a Degradation Failure Model under Some Poisson Shock 泊松冲击下退化失效模型的统计分析
For each specimen, cracks appeared on the chord connecting face, and extended along the weld connecting the plate and chord, which led to the performance degradation and failure of the connection. 对每个试件,裂纹出现在弦管连接表面,沿弦管与节点板的连接焊缝扩展,并导致性能退化及破坏。
Degradation Failure Analysis of Metallized Film Pulse Capacitors 金属化膜脉冲电容器退化失效分析
The main factors which result in degradation and failure of the cell are preparation procedure and performance of β″ Al 2O 3; 导致电池退化和失效的主要因素为β〃-Al2O3电解质的制备工艺和性能;
Degradation and Failure Study of Na/ S Cell 钠硫电池退化和失效的研究
BS Model for Degradation Failure of Electronic Product 电子产品退化失效的BS模型
In this paper, the stiffness degradation and damage failure in concrete dams subjected to strong ground motion are simulated by plastic-damage model based on damage index variable. 本文以拉压应力损伤因子为内变量,采用混凝土塑性损伤模型,分析了坝体在地震荷载作用下的刚度退化以及在多维应力状态下拉应力引起的损伤破坏。
At last one frame of reliability simulation platform are proposed to simulate reliability level of circuits with degradation and other failure modes. It will help to take full use of test data and empirical models to predict the trend of system failure rate. 提出能源系统可靠性模拟平台设计框架,该平台可用于模拟在参数漂移及其它失效模式下电路系统的可靠性水平,其特点是能够充分利用试验数据与经验模型分析系统失效率变化趋势。
From this example, we believe BS model could be used for degradation failure of electronic product. 该实侧证明BS模型能应用于电子产品的退化失效。
In the research of theory model, cumulative degradation model ( CDM) of failure mechanism and cumulative exposure model ( CEM) of probability statistic for SDS-ALT are established, and the efficiency principle for SDS-ALT is qualitatively analyzed based on them. 在理论模型研究中,分别建立了步降应力试验累积退化的失效物理模型与累积失效的概率统计模型,并从理论模型的角度对效率原理进行了定性分析。
Based on the progression, the phenomena in a severe accident are classified into three phases: core degradation, vessel melt-through and the failure of the containment, and the fission products were released there after. 严重事故过程可分为堆芯解体、压力容器熔穿、安全壳失效三阶段,裂变产物随之释放。
In this paper, the method based on performance degradation path and the ones based on distribution of performance degradation measures are proposed to assessing reliability of high-reliable long-lifetime products with degradation failure mechanism. 在基于失效数据可靠性评估及性能可靠性评估方法的基础上,提出了基于退化轨迹与基于性能退化量分布两种可靠性评估方法,以对具有退化失效机理的高可靠长寿命产品进行可靠性评估。
In the study of thin-film conductors, ion diffusion is an important phenomenon as electrodiffusion degradation can lead to metallization failure. 在薄层导体的研究中,粒子的扩散是一类重要的现象,由于电扩散的降解能导致金属的毁坏。
Recent study shows that the phenomenon of software aging exists in many long-running software systems, which will cause the performance degradation and even crash/ hang failure of the systems. 处于运行阶段的软件往往存在老化现象,即软件的性能随着时间的推移逐渐下降,甚至导致突发的系统停机。
Therefore, in order to shorten the unavailable and performance degradation period when a service failure happens, SP needs service oriented fault management to localize the fault and take counter measures. 因此,SP需要面向服务的故障管理机制,在服务发生故障时能迅速定位故障并采取相应措施,以缩短服务宕机时间和性能降级时间。
With the change of the excitation intensity and duration, the failure of a hard disk drive can be categorized into three modes, the performance degradation function failure, the local damage of disk surface and the structural damage of head disk system. 随激励强度和作用时间的变化,硬盘驱动器具有性能退化、盘面局部损坏和头盘系统结构破坏三种失效形式。
Degradation Analysis and Failure Prediction of Aluminum Electrolytic Capacitors 铝电解电容器退化分析与故障预诊断
In this dissertation, the Sol-Gel method and mechanism were investigated deeply for preparation of multiplex composite nanometer additives, then the conduction, degradation and failure mechanisms and the influencing factors of excellent surge withstanding capability of ZnO varistors were discussed and summarized in details. 文章对ZnO压敏电阻器用复合纳米添加剂的Sol-Gel制备方法、机理进行了较为深入的研究,并对压敏电阻器的导电机理、蜕化失效机理和大通流能力影响因素做了较为详细的讨论和总结。
A prognosis feature extraction and selection method based on the simulation information of damage propagation is derived, in order for degradation state recognition and failure prognosis. 针对行星轮系的退化状态识别和故障预测,提出了基于典型损伤演化信息的预测特征提取和选择方法。
The atmospheric corrosion can cause the degradation or failure of material, which not only bring enormous expense to national economy, but also make grievous effect on daily life and production. 材料的大气腐蚀会导致材料的失效,不仅会给国民经济带来巨大的损失,还会给人民的日常生活和生产带来严重的影响。
The proposed methods provide a solution to solve the reliability modeling problem of multi-dimensional degradation failure. ( 4) Competing failure modeling of degradation failure and random failure is studied. 该研究为解决多元退化失效产品可靠性建模问题提供了有效的技术方法。(4)退化与突发失效相关情形下的竞争失效建模方法。
The radiation damage induced-by energetic particles and photons is one of the main reasons of degradation or even failure of electronic systems in man-made and space radiation environment. 在人为和空间辐射环境中,高能粒子和光子引起的辐射损伤是电子系统性能退化甚至失效的主要原因之一。
Severe corrosion will result in performance degradation of electronic components or failure phenomenon occurs. 腐蚀严重时,会导致电子元器件出现性能劣化或失效现象。
In real applications, some products may belong to multiple degradation system ( MDS), which is referred to a product existing more than one degradation path, and each degradation path is affect to failure of this kind of products. 在实际应用中,某些产品可能属于多退化系统,即存在多个退化进程,而每一个退化进程均对产品的退化失效造成影响。
Radiation could induce the performance of the device and circuit degradation, even drastically failure. 辐照会导致器件性能的退化,甚至是彻底的失效。
Intelligent maintenance technique, which provides users with useful information on the degradation and even failure of products so that they can be maintained timely, can support the reuse of products. 智能维护技术能够为使用者提供有用的产品性能衰退信息及故障信息,使产品能够得到适时的维护,故智能维护技术可以有效地支持产品的再利用。
If the moisture content of the chemicals exceeded, may lead to chemical degradation, or totally failure if more seriously. 对于颗粒状化学物而言更是如此,因为化学物的含水量如果超标,可能会导致化学物的性能下降,严重的会导致直接失效。
Continuous braking make rapid increasing in temperature of the brake, brake performance degradation, causing the vehicle brake failure, causing loss of control. 连续制动使得制动器温度快速升高,制动器制动效能下降,导致车辆制动系统失灵,引起车辆失控。