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Gu R.,Institute of Systems Engineering | Liang T.,Institute of Systems Engineering | Peng Z.,Institute of Systems Engineering | Ma Z.,CAS Beijing Institute of Applied Physics And Computational Mathematics
2015 IEEE Conference on Prognostics and Health Management: Enhancing Safety, Efficiency, Availability, and Effectiveness of Systems Through PHAf Technology and Application, PHM 2015 | Year: 2015

Quantification of Margins and Uncertainties (QMU) method is a new developed approach for reliability analysis and assessment. In this paper, the technical architecture of system reliability assessment is built on QMU. Firstly, the hierarchy property of Watch List (WL) is researched and the primary steps of setting up WL are provided. Secondly, four ways of establishing performance gate are provided according to the sources and characteristics of performance parameters. Thirdly, two methods of UQ (Quantification of Uncertainties) are presented. QMU can help engineers in recognizing failure modes and solving complex problems in system reliability assessments. It will provide an entirely new design and assessment model for reliability engineers. © 2015 IEEE.

Yin Y.-H.,Institute of Systems Engineering | Yu S.-R.,Institute of Systems Engineering | Chen Y.-Z.,Institute of Systems Engineering
Binggong Xuebao/Acta Armamentarii | Year: 2011

It is necessary to study and understand the thermo-mechanical responses and failure mechanism of structures irradiated by high power laser, in order to design reasonably high power laser components or increase self-abilities in the confront of high power laser with targets. Some literatures reported the experiments in which a laser beam was used to irradiate the pretensioned aluminum strips and the deformation was measured by using the moiré grating, and the results reveal that the failure modes change with the strip width, i.e. the necked fracture would occur for the narrower strips and the convexly deformation like fish's back along the tension direction for the wider ones. In this paper, the experiments are modeling and simulated by using the finite element method and the experimentally measured results are numerically re-demonstrated. Based on the numerical simulation, the mechanisms of deformation and failure are discussed and related understanding is deepened.

Cakar E.,Institute of Systems Engineering | Hahner J.,Institute of Systems Engineering | Muller-Schloer C.,Institute of Systems Engineering
AUTONOMICS 2008: Proceedings of the 2nd International Conference on Autonomic Computing and Communication Systems | Year: 2011

Flexibility, robustness and adaptivity are key concepts in developing today's technical systems. Nowadays, systems that are developed with conventional design methodologies do not sufficiently meet the requirements of these concepts. An increasing number of system elements, their complexity and a dynamically changing environment often lead to an unexpected system behaviour, although all system elements are available and work correctly. The Organic Computing (OC) initiative deals with new design concepts, which facilitate developing technical systems with life-like properties such as self-organisation, self-optimisation and self-configuration in order to make them robust, flexible and adaptive. In this context, a generic observer/controller architecture1 has been proposed in order to establish controlled self-organisation in technical systems. In this paper, we investigate different distribution possibilities of the generic o/c architecture and the resulting collaboration and communication patterns in a traffic scenario. Copyright © 2008 ICST.

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