Campus Units

Civil, Construction and Environmental Engineering, Electrical and Computer Engineering, Center for Nondestructive Evaluation (CNDE)

Document Type

Conference Proceeding

Conference

ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems

Publication Version

Published Version

Publication Date

2017

Journal or Book Title

Proceedings of the ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS2017)

Volume

2

Issue

SMASIS2017-3999

First Page

V002T05A013

Research Focus Area

Structural Engineering

DOI

10.1115/SMASIS2017-3999

Conference Date

September 18–20, 2017

City

Snowbird, UT

Abstract

Reliable operation of next generation high-speed complex structures (e.g. hypersonic air vehicles, space structures, and weapons) relies on the development of microsecond structural health monitoring (μSHM) systems. High amplitude impacts may damage or alter the structure, and therefore change the underlying system configuration and the dynamic response of these systems. While state-of-the-art structural health monitoring (SHM) systems can measure structures which change on the order of seconds to minutes, there are no real-time methods for detection and characterization of damage in the microsecond timescales.

This paper presents preliminary analysis addressing the need for microsecond detection of state and parameter changes. A background of current SHM methods is presented, and the need for high rate, adaptive state estimators is illustrated. Example observers are tested on simulations of a two-degree of freedom system with a nonlinear, time-varying stiffness coupling the two masses. These results illustrate some of the challenges facing high speed damage detection.

Comments

This proceeding is published as Dodson, Jacob, Bryan Joyce, Jonathan Hong, Simon Laflamme, and Janet Wolfson. "Microsecond State Monitoring of Nonlinear Time-Varying Dynamic Systems." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, pp. V002T05A013-V002T05A013. American Society of Mechanical Engineers, 2017. DOI: 10.1115/SMASIS2017-3999. Posted with permission.

Rights

Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.

Copyright Owner

ASME

Language

en

File Format

application/pdf

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