Towards Failure Modeling in Complex Dynamic Systems: Impact of Design and Manufacturing Variations
Abstract
When designing vehicle vibration monitoring systems for aerospace devices, it is common to use well-established models of vibration features to determine whether failures or defects exist. Most of the algorithms used for failure detection rely on these models to detect significant changes in a flight environment. In actual practice, however, most vehicle vibration monitoring systems are corrupted by high rates of false alarms and missed detections. Research conducted at the NASA Ames Research Center has determined that a major reason for the high rates of false alarms and missed detections is the numerous sources of statistical variations that are not taken into account in the modeling assumptions. In this paper, we address one such source of variations, namely, those caused during the design and manufacturing of rotating machinery components that make up aerospace systems. We present a novelway of modeling the vibration response by including design variations via probabilistic methods. The results demonstrate initial feasibility of the method, showing great promise in developing a general methodology for designing more accurate aerospace vehicle vibration monitoring systems. Copyright © 2002 by ASME.
Recommended Citation
D. A. McAdams and I. Y. Tumer, "Towards Failure Modeling in Complex Dynamic Systems: Impact of Design and Manufacturing Variations," ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2002, vol. 3, pp. 71 - 81, American Society of Mechanical Engineers, Dec 2002.
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
Design for vehicle health monitoring; Monte Carlo simulation; Probabilistic vibration models; Quality control; Variation analysis and modeling
International Standard Book Number (ISBN)
978-079183621-7
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Society of Mechanical Engineers, All rights reserved.
Publication Date
01 Dec 2002
