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| 1 | 焊点高度对微尺度焊点力学行为的影响显示文摘采用精密动态力学分析仪研究了直径恒定为400μm、高度为125~325μm的无铅Sn-3.0Ag-0.5Cu'铜引线/钎料/铜引线'三明治结构微尺度焊点在100℃和25℃温度下的准静态拉伸与剪切力学行为以及断裂失效机制.结果表明,所有微尺度焊点的拉伸和抗剪强度均随焊点高度的增大而减小;在相同的试验条件下,相同尺寸微尺度焊点的抗剪强度低于抗拉强度,同时剪切断裂应变小于拉伸断裂应变,表明电子封装互连微尺度焊点在剪切应力下的服役环境更为严峻.但是,在相同的加载速率下,相同尺寸微尺度焊点的拉伸强度与断裂应变均随温度的升高而减小. | 尹立孟 Michael Pecht 位松 耿燕飞 姚宗湘 | 2013 | 焊接学报2013，34，8： | 13 |
| 2 | An improved empirical wavelet transform method for rolling bearing fault diagnosis显示文摘Empirical wavelet transform(EWT)based on the scale space method has been widely used in rolling bearing fault diagnosis.However,using the scale space method to divide the frequency band,the redundant components can easily be separated,causing the band to rupture and making it difficult to extract rolling bearing fault characteristic frequency effectively.This paper develops a method for optimizing the frequency band region based on the frequency domain feature parameter set.The frequency domain feature parameter set includes two characteristic parameters:mean and variance.After adaptively dividing the frequency band by the scale space method,the mean and variance of each band are calculated.Sub-bands with mean and variance less than the main frequency band are combined with surrounding bands for subsequent analysis.An adaptive empirical wavelet filter on each frequency band is established to obtain the corresponding empirical mode.The margin factor sensitive to the shock pulse signal is introduced into the screening of empirical modes.The empirical mode with the largest margin factor is selected to envelope spectrum analysis.Simulation and experiment data show this method avoids over-segmentation and redundancy and can extract the fault characteristic frequency easier compared with only scale space methods. | HUANG HaiRun LI Ke SU WenSheng BAI JianYi XUE ZhiGang ZHOU Lang SU Lei PECHT Michael | 2020 | Science China(Technological Sciences)2020，63，11： | 10 |
| 3 | Opportunistic maintenance for multi-component systems considering structural dependence and economic dependence显示文摘Although opportunistic maintenance strategies are widely used for multi-component systems, all opportunistic maintenance strategies only consider economic dependence and do not take structural dependence into account. An opportunistic maintenance strategy is presented for a multi-component system that considers both structural dependence and economic dependence.The cost relation and time relation among components based on structural dependence are developed. The maintenance strategy for each component of a multi-component system involves one of five maintenance actions, namely, no-maintenance, a minimal maintenance action, an imperfect maintenance action, a perfect maintenance action, and a replacement action. The maintenance action is determined by the virtual age of the component, the life expectancy of the component, and the age threshold values.Monte Carlo simulation is designed to obtain the optimal opportunistic maintenance strategy of the system over its lifetime. The simulation result reveals that the minimum maintenance cost with a strategy that considers structural dependence is less than that with a strategy that does not consider structural dependence. The availability with a strategy that considers structural dependence is greater than that with a strategy that does not consider structural dependence under the same conditions. | Junbao Geng Michael Azarian Michael Pecht | 2015 | Journal of Systems Engineering and Electronics2015，26，3： | 6 |
| 4 | Data-driven reliability analysis of Boeing 787 Dreamliner显示文摘The Boeing 787 Dreamliner,launched in 2011,was presented as a game changer in air travel.With the aim of producing an efficient,mid-size,wide-body plane,Boeing initiated innovations in product and process design,supply chain operation,and risk management.Nevertheless,there were reliability issues from the start,and the plane was grounded by the U.S.Federal Aviation Administration(FAA)in 2013,due to safety problems associated with Li-ion battery fires.This paper chronicles events associated with the aircraft’s initial reliability challenges.The manufacturing,supply chain,and organizational factors that contributed to these problems are assessed based on FAA data.Recommendations and lessons learned are provided for the benefit of engineers and managers who will be engaged in future complex systems development. | Guru PANDIAN Michael PECHT Enrico ZIO Melinda HODKIEWICZ | 2020 | Chinese Journal of Aeronautics2020，33，7： | 6 |
| 5 | 浸银电路板蔓延腐蚀评估方法显示文摘讨论了高硫环境中电路板浸银表面的蔓延腐蚀失效问题。发现焊盘与阻焊膜之间的相对位置关系影响了浸银层的覆盖程度,导致枝状腐蚀物的生成、蔓延长度及主要成分的不同。探讨了采用含硫粘土作为腐蚀源,驱动电路板浸银焊盘蔓延腐蚀的模拟实验方法。并采用两参数威布尔分布统计蔓延腐蚀物的长度,以特征长度定量评估浸银电路板抗蔓延腐蚀能力。分别研究了腐蚀时间、加热粘土次数和增加相对湿度对含硫粘土模拟方法的影响。提出了采用含硫粘土评估浸银电路板抗蔓延腐蚀的一般方法和对较恶劣工业环境的模拟方法。 | 周怡琳 Michael Pecht | 2011 | 电工技术学报2011，26，2： | 3 |
| 6 | Light emitting diodes reliability review显示文摘 | Moon-Hwan Chang Diganta Das P.V. Varde Michael Pecht | 2011 | Microelectronics Reliability2011，，5： | 2 |
| 7 | 无卤阻燃剂在印制电路板中的应用进展显示文摘介绍了无卤阻燃剂标准,含卤阻燃剂的使用现状、各国禁卤法规以及各大公司无卤印制电路板(PCB)转换进程;详细分析了PCB中阻燃剂种类及其作用机理,并总结出阻燃剂主要通过切断燃烧三要素来源达到阻燃目的;最后综述了无卤PCB开发现状及其失效和可靠性分析现状。由于新型电子产品对PCB的性能要求愈来愈高,同时又要满足无卤无铅的环保要求,单一阻燃剂很难达到要求,因此多种阻燃剂的协同作用是目前研究的热点方向之一。目前对于使用无卤基板材料后电子产品失效及可靠性方面的参考资料较少,也是需要进一步研究的方向之一。 | 马丽丽 包生祥 Bhanu Sood Michael Pecht | 2010 | 材料导报2010，24，23： | 2 |
| 8 | 用文献计量数据解读中国和印度的科技发展显示文摘该文采用SCI/SSCI数据库,对通信联系人中至少含有一位印度/中国人的科技论文进行了文献计量学和计算语言学分析。依据对印度和中国科技文献单独分析的结果,深入地探讨了两国在科技领域的差异。借助不同的分析技术,包括影响因子分析、相关性图解以及文档聚类(传统聚类和模糊聚类),多角度地分析了中国和印度科技文献的基本学科结构体系(主要作者、研究单位等)与主要学科结构(学科重点以及学科重点之间的关系)。第一部分内容介绍了中国科技文献评估,第二部分阐述了印度科技文献评估,第三部分则为印度和中国科研成果的多角度比较。 | Ronald N. Kostoff Michael B. Briggs Robert L. Rushenberg Christine A. Bowles Sujit Bhattacharya Dustin Johnson Alan S. Icenhour Kimberly Nikodym Ryan B. Barth Simha Dodbele Michael Pecht 朱海峰 | 2007 | 科学观察2007，2，4： | 2 |
| 9 | 半导体发光器件的可靠性预计模型显示文摘文中介绍了一种基于概率方法的半导体发光器件可靠性预计模型。在初始光发射性能给定而退化特性通过试验确定的前提下,使用该模型可得到器件的可靠度函数关系,且理论预计结果与试验结果一致性良好。(对初始光发射性能和退化特性建模的研究仍在进行中,在本文中不涉及。而本模型最终将包括上述两部分的建模,以得到完整的可靠性预计解析结果。)对于半导体发光器件,本研究作为基于失效物理的一套完整的可靠性预计方法研究中的重要一步,提供了一种可行的方法,并且证明在器件性能基本参数基础上确定可靠度函数关系的途径具有可行性。 | 雷昕 谢劲松 michael Pecht | 2009 | 电子质量2009，，2： | 2 |
| 10 | 不同开路电压松弛时间下基于等效电路解构的锂离子电池荷电状态估计(英文)显示文摘目的:开路电压是基于模型的电池荷电状态估计的必要参数,其测试耗时大、效率低。本文旨在测试各种电压松弛时间的荷电状态-开路电压关系,研究其对开路电压法和等效电路模型的荷电状态估计准确度的影响,提高开路电压测试效率。创新点:1.通过电路解构方法,将二阶阻容电路分解为简单路,运用二阶段递推最小二乘法辨识电路模型的参数;2.基于递推最小二乘法和卡尔曼滤波算法,建立电路参数辨识和荷电状态估计的的联合自适应算法,研究电池电压松弛时间对基于等效电路模型的荷电状态估计的影响。方法:1.通过电路解构技术和理论推导,构建辨识二阶阻容等效电路参数的二阶段递推最小二乘法辨识方法(图2和公式(4)^(9));2.将二阶段递推最小二乘法和扩展卡尔曼滤波器集成,建立适应工况变化的电池模型参数辨识和状态估计的联合算法(图3);3.通过电池测试,建立多温度和多电压松弛时间的荷电状态与开路电压的关系,驱动自适应联合算法,获得既保证荷电状态估计准确度,又缩短开路电压测试时间的电压松弛时间。结论:1.二阶段递推最小二乘法既能简化矩阵计算,又能够保证电路参数的辨识非负性;2.联合自适应算法能够适应工况变化辨识模型参数和估计荷电状态;3.联合自适应算法的结果表明,5 min的电压松弛时间既能保证荷电状态估计性能,又能极大地提高开路电压测试效率。 | Xi-ming CHENG Li-guang YAO Michael PECHT | 2017 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2017，18，4： | 2 |
| 11 | A critique of reliability prediction techniques for avionics applications显示文摘Avionics(aeronautics and aerospace) industries must rely on components and systems of demonstrated high reliability.For this, handbook-based methods have been traditionally used to design for reliability, develop test plans, and define maintenance requirements and sustainment logistics.However, these methods have been criticized as flawed and leading to inaccurate and misleading results.In its recent report on enhancing defense system reliability, the U.S.National Academy of Sciences has recently discredited these methods, judging the Military Handbook(MILHDBK-217) and its progeny as invalid and inaccurate.This paper discusses the issues that arise with the use of handbook-based methods in commercial and military avionics applications.Alternative approaches to reliability design(and its demonstration) are also discussed, including similarity analysis, testing, physics-of-failure, and data analytics for prognostics and systems health management. | Guru Prasad PANDIAN Diganta DAS Chuan LI Enrico ZIO Michael PECHT | 2018 | Chinese Journal of Aeronautics2018，31，1： | 2 |
| 12 | The Reliability Physics Approach to Failure Prediction Modeling显示文摘 | MICHAEL G PECHT A | 1990 | Quality and Engineering International1990，，6： | 1 |
| 13 | 基于双输入双向脉冲电压单元的三相航空静止变流器显示文摘该文提出一系列双输入双Buck脉冲电压单元,进一步提出三相双输入航空静止变流器拓扑族。该拓扑族无桥臂直通风险,可以四象限工作,同时实现一个电压周期内负载的五电平输出,有效地减小了谐波含量。该文详细分析拓扑族的四象限工作模态,提出适用于该拓扑族的双载波自适应调制策略,并建立拓扑族的数学模型,推导基于小信号模型的传递函数,进行系统电压-电流双闭环参数设计、动态性能分析等研究。实验结果说明,该文提出的双输入双向脉冲电压单元、拓扑族结构、调制策略具有可行性,验证了三相航空静止变流器数学模型、传递函数、参数设计的正确性,以及系统在负载变化时的快速响应能力。 | 李尚 葛红娟 尹航 杨帆 Michael Pecht | 2021 | 电工技术学报2021，36，16： | 1 |
| 14 | PWB Solder Joint Life Calculations Under Thermal and Vibrational Loading显示文摘 | BARKER Donald B DASGUPTA Abhijit PECHT Michael G | 1992 | Journal of the IES1992，35，1： | 1 |
| 15 | Process capability indices and product reliability 显示文摘 | Bharatwaj Ramakrishnan Peter Sandborn Michael Pecht | 2001 | Micro- electronics Reliability2001，，41： | 1 |
| 16 | Physics-of-failure-based prognostics for electronic products显示文摘 | MICHAEL PECHT JIE GU | | 0，，3： | 1 |
| 17 | Light emitting diodes reliability review显示文摘 | Moon-Hwan Chang Diganta Das P.V. Varde Michael Pecht | 2011 | Microelectronics Reliability2011，，5： | 1 |
| 18 | Development of an optimized condition-based maintenance system by data fusion and reliability-centered maintenance显示文摘 | Gang Niu Bo-Suk Yang Michael Pecht | 2010 | Reliability Engineering and System Safety2010，，7： | 1 |
| 19 | A novel approach for flip chip inspection based on improved SDELM and vibration signals显示文摘This paper proposes a novel nondestructive diagnostic method for flip chips based on an improved semi-supervised deep extreme learning machine(ISDELM)and vibration signals.First,an ultrasonic transducer is used to generate and focus ultrasounds on the surface of the flip chip to excite it,and a laser scanning vibrometer is applied to acquire the chip’s vibration signals.Then,an extreme learning machine-autoencoder(ELM-AE)structure is adopted to extract features from the original vibration signals layer by layer.Finally,the study proposes integrating the ELM with sparsity neighboring reconstruction to diagnose defects based on unlabeled and labeled data.The ISDELM algorithm is applied to experimental vibration data of flip chips and compared with several other algorithms,such as semi-supervised ELM(SS-ELM),deep ELM,stacked autoencoder,convolutional neural network,and ordinary SDELM.The results show that the proposed method is superior to the several currently available algorithms in terms of accuracy and stability. | SU Lei ZHANG SiYu JI Yong WANG Gang MING XueFei GU JieFei LI Ke PECHT Michael | 2022 | Science China(Technological Sciences)2022，65，5： | 1 |
| 20 | Why gold flash can be detrimental to long-term reliability显示文摘 | XIE Jing-song SUN Ming PECHT Michael | 2004 | Journal of Electronic Packaging2004，126，： | 1 |
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