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Autor:
Henrik Bjurström, Oskar Tofeldt, Anders Gudmarsson, Josefin Starkhammar, Nils Ryden, Öz Yilmaz
Publikováno v:
Fifth International Conference on Engineering Geophysics, Al Ain, UAE, 21–24 October 2019.
Autor:
Nils Ryden, Oskar Tofeldt
Publikováno v:
The Journal of the Acoustical Society of America. 141:3302-3311
Lamb modes with zero group velocity at nonzero wave numbers correspond to local and stationary resonances in isotropic plates. Lamb modes can be utilized for nondestructive evaluation of the elastic properties and thickness. One example of an applica
Autor:
Nils Ryden, Oskar Tofeldt
Publikováno v:
NDT & E International. 69:16-27
Near field effects are found to create systematic errors, within the range of about 5-15%, in thickness estimations from Impact-Echo (IE) testing. This paper studies near field effects from a point source in a combined Multichannel Analysis of Surfac