ALL libraries (COBIB.SI union bibliographic/catalogue database)
  • Full-field 3D mode shape measurement using the multiview spectral optical flow imaging method [Elektronski vir] : chapter 2
    Gorjup, Domen, 1992- ; Slavič, Janko, 1978- ; Boltežar, Miha
    In some modal testing applications, image-based techniques offer compelling advantages compared to conventional sensors, particularly in cases where mass loading is problematic or a high spatial ... resolution is required. Still, the limited field of view of the well-established stereo DIC method can be a limiting factor in some measurements. By employing the principles of multi-view imaging, this constraint can be alleviated. For linear, time-invariant structures, multi-view triangulation can be performed in the frequency domain. The measurement field of view can in this way be arbitrarily extended using only a single moving camera imaging system. By using the simplified optical flow method in the displacement spectra identification step, a still-frame camera can be used for image acquisition, considerably lowering the complexity and cost of the imaging system. In this work, the spectral optical flow imaging and frequency-domain multi-view triangulation approaches are combined in an effort to identify mode shapes of a simple three-dimensional structure. The aim is to develop a robust and cost-effective single still-frame camera-based modal testing method.
    Source: Rotating Machinery, Optical Methods & Scanning LDV Methods [Elektronski vir]. Vol. 6, Proceedings of the 39th IMAC, A Conference and Exposition on Structural Dynamics 2021 [Orlando, Florida, February 8-11, 2021] (Str. 9-12)
    Type of material - conference contribution
    Publish date - 2022
    Language - english
    COBISS.SI-ID - 75139331

    Link(s):

    https://link.springer.com/chapter/10.1007/978-3-030-76335-0_2
    DOI

Shelf entry