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- W2320167609 abstract "Presented is a novel technique for damage detection in a monolithic plate platform containing a small through-the-thickness slightly elliptic hole in addition to precision drilled holes to support an aircraft engine. Partially cantilevered, the plate is interrogated by a hammer-generated impulsive force applied sequentially over points on spanning interrogation lines. The impulse-induced transverse acceleration is sampled simultaneously by three sensors placed at the apexes of a local triangle in a selected sensing area. Dynamics effects of the presence of the hole (damage) are extracted by decomposing the three local collocated acceleration databases into their intrinsic proper orthogonal decomposition (POD) modes. The POD spatial modulations of the three collocated databases are smooth and reflect in a clear manner symmetries of the interrogation lines. We find that the dynamic effect of the presence of the hole is reflected as robust destruction of symmetry in all POD spatial modulations. This result holds for a large number of local sensing areas covered by the triangular formation of the three sensors. The technique has promising potential to extract robust and highly indicative spatial patterns of damage in coupled machinery-structural systems of complex geometry." @default.
- W2320167609 created "2016-06-24" @default.
- W2320167609 creator A5041945487 @default.
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- W2320167609 date "2012-08-12" @default.
- W2320167609 modified "2023-10-17" @default.
- W2320167609 title "Novel Detection of Dynamics Effects in the Transverse Acceleration Field of a Hole in Aluminum Plate Platform of an Aircraft Engine" @default.
- W2320167609 doi "https://doi.org/10.1115/detc2012-70500" @default.
- W2320167609 hasPublicationYear "2012" @default.
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