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Investigation of Error Factors from an Impact Hammer Test for Developing a Statistic Based Technique for Model Updating
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 Title & Authors
Investigation of Error Factors from an Impact Hammer Test for Developing a Statistic Based Technique for Model Updating
Lee, Su; Lee, Jin Woo;
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 Abstract
In this work, experimental errors from an impact hammer test were investigated to develop a statistic-based technique for updating a finite element model. Digital signal processing was analyzed by using theoretical models and experiments when errors occurred during the experimental procedure. First, the duration time and peak level of the excitation signal, the stiffness and position of elastic springs connecting the specimen as well as the support, position and mass of the accelerometer were considered as error factors during the experiment. Then the picket fence effect, leakage, and exponential window function were considered as candidate error factors during the digital signal processing. Finally, methods to reduce errors are suggested.
 Keywords
Finite Element Analysis;Impact Hammer Test;Uncertainty;Frequency Response Function;Natural Frequency;
 Language
Korean
 Cited by
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