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Operational Modal Analysis - Another Way of Doing Modal Testing

Mehdi Batel

Open publisher page 89 citations

Abstract

Operational modal analysis (often called output-only or ambient modal analysis) is described in this article. Modal testing is performed on a plate structure with well-defined modes, resonance frequencies and damping values. Frequency Domain Decomposition (FDD) and Enhanced Frequency Domain Decomposition (EFDD) concepts are presented and applied to a plate structure. This article details the signal processing mathematical background and presents alternative curve-fitting processes.

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What this paper is about

Operational modal analysis (often called output-only or ambient modal analysis) is described in this article. Modal testing is performed on a plate structure with well-defined modes, resonance frequencies and damping values. Frequency Domain Decomposition (FDD) and Enhanced Frequency Domain Decomposition (EFDD) concepts are presented and applied to a plate structure. This article details the signal processing mathematical background and presents alternative curve-fitting processes.

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OpenAlex reports 89 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Operational modal analysis (often called output-only or ambient modal analysis) is described in this article. Modal testing is performed on a plate structure with well-defined modes, resonance frequencies and damping values. Frequency Domain Decomposition (FDD) and Enhanced Frequency Domain Decomposition (EFDD) concepts are presented and applied to a plate structure. This article details the signal processing mathematical background and presents alternative curve-fitting processes.

Key concepts: Modal testing, Modal, Operational Modal Analysis, Modal analysis, Modal analysis using FEM, Frequency domain, Signal processing, Acoustics

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