An on-site modal testing method for the detection of structural non-linearities Part II: Application

Gun Myung Lee, Martin Wesley Trethewey

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations

    Abstract

    The work presented in this paper discusses the practical implementation of an experimental testing/analysis method to detect non-linear structural behaviour in an effective on-site fashion. The testing/evaluation method is based on the linear analysis of non-linear systems with increasing amplitude random excitation signals and is presented in Part I of this work. In the second part of this work, the method is applied to two distinctly different types of structures; (1) a simple beam structure and; (2) an industrial robot. The analysis shows that the beam structure behaves in a linear fashion throughout the operating range. The robot structure exhibited non-linear characteristics over the frequency range of interest. The analysis of the robot data provided a means to classify the types of non-linearities present in the structure. These actual testing applications indicate the feasibility and capability of the proposed method.

    Original languageEnglish (US)
    Pages (from-to)155-165
    Number of pages11
    JournalMechanical Systems and Signal Processing
    Volume6
    Issue number2
    DOIs
    StatePublished - Jan 1 1992

    All Science Journal Classification (ASJC) codes

    • Control and Systems Engineering
    • Signal Processing
    • Civil and Structural Engineering
    • Aerospace Engineering
    • Mechanical Engineering
    • Computer Science Applications

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