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Experimental Identification of a Surface Delamination of a Laminated Sandwich Beam
Author(s) -
Müller I.,
Schmieg H.
Publication year - 2003
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200310438
Subject(s) - delamination (geology) , nonlinear system , materials science , oscillation (cell signaling) , beam (structure) , excitation , intensity (physics) , structural engineering , surface (topology) , composite material , optics , engineering , physics , geometry , mathematics , geology , electrical engineering , paleontology , genetics , quantum mechanics , biology , subduction , tectonics
The oscillation properties of a laminate structure yields information about its structural integrity. Unilateral constraints and impacts dominate the oscillation properties of delaminated structures. These phenomena give rise to a nonlinear system response, whereas the degree of the nonlinearity augments with increasing intensity of excitation. The distribution of the nonlinearity on various test points allows the localisation of a delamination, exemplarily shown here on a laminated beam with a surface delamination.