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Feasibility study on the use of wireless accelerometers in the experimental modal testing

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Abstract

This paper presents a modal parameter estimation of a cantilevered steel beam using low-cost wireless accelerometers for structural health monitoring. To demonstrate the feasibility of using wireless accelerometers, the frequency response functions (FRFs) for the beam are measured. A curve-fitting algorithm is then applied to extract the modal parameters, such as natural frequencies, damping ratios, and mode shapes. These dynamic characteristics of the cantilever beam are acquired and interpreted through the FRFs by the commercial analyzing software. Experimental results show that wireless accelerometers can successfully determine the dynamic properties of the cantilever beam. This paper provides the analytical basis of applying wireless accelerometers to the experimental modal analysis and supports for the feasibility of cantilever beam modal testing using low-cost wireless accelerometers.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (No. 2014-0024242).

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Authors and Affiliations

  1. Division of Computer and Information Engineering, Hoseo University, Asan, Chungnam, Republic of Korea

    Surgwon Sohn

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  1. Surgwon Sohn
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Correspondence to Surgwon Sohn.

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Sohn, S. Feasibility study on the use of wireless accelerometers in the experimental modal testing. J Supercomput 72, 2848–2859 (2016). https://doi.org/10.1007/s11227-016-1628-8

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  • DOI: https://doi.org/10.1007/s11227-016-1628-8

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