Performing modal analysis for multi-metric measurements: a discussion

R. Soman; K. Majewska; M. Radzienski; W. Ostachowicz

doi:10.1117/12.2218133

1 April 2016 Performing modal analysis for multi-metric measurements: a discussion

R. Soman, K. Majewska, M. Radzienski, W. Ostachowicz

Proceedings Volume 9805, Health Monitoring of Structural and Biological Systems 2016; 980528 (2016) https://doi.org/10.1117/12.2218133
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

This work addresses the severe lack of literature in the area of modal analysis for multi-metric sensing. The paper aims at providing a step by step tutorial for performance of modal analysis using Fiber Bragg Grating (FBG) strain sensors and Laser Doppler Vibrometer (LDV) for displacement measurements. The paper discusses in detail the different parameters which affect the accuracy of the experimental results. It highlights the often implied, and un-mentioned problems, that researchers face while performing experiments. The paper tries to bridge the gap between the theoretical idea of the experiment and its actual execution by discussing each aspect including the choice of specimen, boundary conditions, sensors, sensor position, excitation mechanism and its location as well as the post processing of the data. The paper may be viewed as a checklist for performing modal analysis in order to ensure high quality measurements by avoiding the systematic errors to creep in.

Citation Download Citation

R. Soman, K. Majewska, M. Radzienski, and W. Ostachowicz "Performing modal analysis for multi-metric measurements: a discussion", Proc. SPIE 9805, Health Monitoring of Structural and Biological Systems 2016, 980528 (1 April 2016); https://doi.org/10.1117/12.2218133

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