000014381 001__ 14381
000014381 005__ 20161115100150.0
000014381 04107 $$aeng
000014381 046__ $$k2016-08-21
000014381 100__ $$aZhang, Yi
000014381 24500 $$aDamage localization for operational modal analysis via random decrement technique

000014381 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014381 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014381 506__ $$arestricted
000014381 520__ $$2eng$$aAn approach to localize damage from response of wide band excitation with the help of undamaged model is presented. The wide band response is transferred to a free decay response via random decrement technique. The free decay response is regarded as two parts, a forced response related with damage and a free decay response of undamaged system. If the second part can be eliminated, the residual should belong to a span related with damage. However, the second part cannot be extracted directly because the initial condition is not measurable for all system coordinates with limited sensors. Therefore, we employ the null space of free decay response span based on undamaged model to eliminate it. The fact that subspace angle between the treated free decay response and columns in transfer matrix selected by correct damaged pattern should be zero is used in final localization.

000014381 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014381 653__ $$a

000014381 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014381 720__ $$aZhang, Yi
000014381 8560_ $$ffischerc@itam.cas.cz
000014381 8564_ $$s156376$$uhttps://invenio.itam.cas.cz/record/14381/files/PO.SM16-1.14.224.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3029, code PO.SM16-1.14.224
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000014381 962__ $$r13812
000014381 980__ $$aPAPER