Browse Publications Technical Papers 2009-01-1036

Decomposition of Intrinsic Mode Functions at DIC Key Measurement Points 2009-01-1036

Digital Image Correlation (DIC) which is used as displacement and strain measurements has advantages of full field, non-contact and considerately high precision. Therefore, DIC has great potentiality in quantitative measurement of deformation and vibration of engineering structure. In the most cases, the vibration signal measured on structure under service condition is nonlinear and non-stationary. As the prior numerical proceeding works of hybrid method of DIC and FEA, an Empirical Mode Decomposition method (EMD) is presented in this paper to obtain the Intrinsic Mode Functions (IMFs) of the vibration signal at structural key points. The EMD method can be also used to de-noise the quasi-static deformation or strain signal measured by DIC at structural key points.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.