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70th Annual Reliability and Maintainability Symposium (RAMS)

作者： Yellamati, David Deepak Goktas, Yavuz Hu, Yunwei Wayne State Univ Detroit MI USA Schneider Elect Rueil Malmaison France

ISBN: (纸本)9798350307696

Safety Risk Management plays a critical role in design and development of mission critical equipment such as Power Electronic Systems. These systems are used in Data Centers, EV (Electric Vehicle) and EV Charging Infrastructure, Manufacturing Facilities, Hospitals and in many other industrial and commercial applications. Failures of these systems can potentially lead to Safety issues such as a) Human Injury due to Arc Flash, Shock Hazard, Explosion etc., or b) Property Damage, Regulatory non-compliance issues such as Unsuitable Voltage or Surge Protection during their useful life. These issues can have a detrimental effect on health of the organization and communities at large. Analysis of the root causes for majority of these types of issues have been found to be due to lack of design robustness over the useful life because of ineffective Safety Risk Management process. In this paper, we describe an end-to-end streamlined process to manage Safety Risks during design using an example of a Capacitor Bank Sub-system that is part of Variable Frequency Drive (VFD) System (which is a Power Electronic System). This process consists of i) Identification of CTQs (Critical-to-Quality) characteristics from the Voice of Customer (VoC) & QFD (Quality Function Deployment) analysis, ii) Development of a parameter (P) diagram working backwards from the CTQs, iii) Development of Design Failure Modes & Effects Analysis (DFMEA) from P-diagram and identification of top safety risks via RPNs (Risk Priority Numbers) and Severity Ranking, iv) Deep dive and quantification of Safety Critical Risks i.e., End Effects of Severity of 9 (Property Damage, Regulatory non-compliance) & 10 (Human Injury) identified from DFMEA using FTA (Fault Tree Analysis) and vii) Risk Mitigation & Quantification of Improvements. We have illustrated the application of end-to-end product risk management process on a Capacitor Bank Sub-system of the VFD system as an example and demonstrated that potential design ri

关键词： Variable Frequency Drive Voice of Customer Analytical Hierarchy Process Quality Function Deployment (QFD) Change Point Analysis parameter diagram DFMEA Fault Tree Analysis

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Design optimization through blended Reliability, Six Sigma and Analytics tools

Design optimization through blended Reliability, Six Sigma a...

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Annual Reliability and Maintainability Symposium (RAMS) - R and M in the Second Machine Age - The Challenge of Cyber Physical Systems

作者： Patil, Ranjeet Thiagarajan, Balaji CSSMBB Tower 14 Pune 411013 Maharashtra India

ISBN: (纸本)9781538665541

With blended approach of DFR (Design for Reliability), DFSS (Design for six sigma) and Data Analytics tools we can observe below benefits: [GRAPHICS] . Systematic approach aligned with NPD Time saving and cost-effective method Enables quick decision with data centric approach Ensure robust design and optimization Concurrent blended tools application

关键词： Six Sigma DFR DFSS Data Analytics QFD DOE CTQ parameter diagram NPD Accelerated Life Test Life data analysis Sensitivity analysis Optimization Prediction Transfer function Reliability Goal Allocation KANO Affinity Text Mining Word cloud Seasonality RBD and Time to failure test

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Application of Executable SysML Technology in UCAV Formation Ground Attack 2018

Application of Executable SysML Technology in UCAV Formation...

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2nd International Conference on Management Engineering, Software Engineering and Service Sciences (ICMSS)

作者： Song, Chun-long Yang, Ke-wei Xu, Jian-guo Natl Univ Def Technol Coll Syst Engn Changsha Hunan Peoples R China

ISBN: (纸本)9781450354318

Executable SysML is one of the development directions of model driven architecture (MDA). Executable SysML is committed to the automatic generation code from the model. The simulation and the testing of model is realized by compiling the model or by executing the code. This paper deeply studies the application of executable SysML technology in UCAV formation attack. In the process of constructing the formation information system, the static model is transformed into an executable model in a two-way traceability way and the logical rationality verification of the tactical model is carried out. At the same time, the parameter map and MATLAB calculation software integration, enhanced the quantitative analysis capabilities of the executable model and optimization of combat effectiveness. Provide a reference for battlefield decision-making. Finally, the UCAV formation ground attack scene is constructed and the maximize between the utility of target combat and the loss difference is obtained.

关键词： Executable SysML Model verification parameter diagram Quantitative analysis Model-driven architecture

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FMEA on FMEA 2013

FMEA on FMEA

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59th Annual Reliability and Maintainability Symposium (RAMS)

作者： Silverman, Mike Johnson, James R. Ops A La Carte Santa Clara CA 95050 USA

ISBN: (纸本)9781467347112

Failure Modes and Effects Analysis (FMEA) is a systematic technique of identifying, analyzing and preventing product and process problems before they occur. When implemented properly, FMEA's is a valuable tool. When improperly executed, FMEA wastes time and resources and at its worst steers you in wrong directions. In this paper, we describe FMEA on FMEA, exploring how FMEAs go wrong and how to avoid these pitfalls.

关键词： FMEA Facilitation Mitigation Boundary Interface diagram parameter diagram HALT

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Thermal heating regimes during first-order homogeneous reactions

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COMBUSTION EXPLOSION AND SHOCK WAVES 2012年第4期48卷 432-439页

作者： Filimonov, V. Yu. Polzunov Altai State Tech Univ Barnaul 656038 Russia

Qualitative features of self-heating regimes for first-order homogeneous reactions are considered by analyzing the structure of the phase trajectories. Consideration of the temperature dependence of the heating rate makes it possible to extend the main results of Semenov's theory of thermal explosion and pass to a two-dimensional parameter diagram, which allows the determination of the critical ignition conditions taking into account kinetic inhibition. It is found that the diagram of the Todes criterion versus the reciprocal of the Semenov criterion has four characteristic regions with different kinetics, two of which are limiting and two transitional ones. The boundaries of the regions are calculated, and the classical theory of thermal explosion is shown to be a special case of the projections of these boundaries on the range of the Semenov criterion.

关键词： reaction kinetics thermal explosion phase trajectory parameter diagram heating regimes

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