Fatigue prognosis integrating usage monitoring system

Jingjing He, Yongming Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a novel fatigue prognosis methodology integrating sensor data from usage monitoring system is proposed. The key concept is to reconstruct the dynamic responses for the critical spots where the direct sensor measurement is unavailable. The sensor data at limited locations measured from usage monitoring system are used as the basis of the reconstruction. Fatigue prognosis for the critical spot is performed using the reconstructed dynamic responses. The Empirical Mode Decomposition (EMD) method with certain intermittency criteria is employed to decompose the sensor measurements into a series of Intrinsic Mode Functions which represent the dynamic responses under mode coordinates. An extrapolation procedure based on the finite element analysis is used to reconstruct the dynamic responses for the critical spot after the decomposition. The extrapolated dynamic responses for the critical spot is then integrated with a physics-based fatigue crack growth model for fatigue damage prognosis. The proposed methodology is demonstrated using a multiple degree-of-freedom cantilever beam problem.

Original languageEnglish (US)
Title of host publication52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - Dec 1 2011
Externally publishedYes
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: Apr 4 2011Apr 7 2011

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityDenver, CO
Period4/4/114/7/11

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    He, J., & Liu, Y. (2011). Fatigue prognosis integrating usage monitoring system. In 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference [AIAA 2011-1937] (Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference). https://doi.org/10.2514/6.2011-1937