Zobrazeno 1 - 10
of 82
pro vyhledávání: '"K.J. Langenberg"'
Autor:
Christiane Maierhofer, H.W. Reinhardt, G. Dobmann, Claus Flohrer, J.H. Kurz, A. Taffe, D. Streicher, Wolfgang R. Habel, Ch. Kohl, J. Wöstmann, Markus Krüger, Karl-Josef Sandmeier, K.J. Langenberg, K. Mayer, R. Marklein, Gerd Wilsch, Andre Molkenthin, Christian U. Grosse, Gottfried Sawade, Hans-Joachim Krause, Jean-François Lataste, Xavier Dérobert, Carmen Andrade, Isabel Martínez, Johannes Hugenschmidt, Luigi Zanzi, Mathias Röllig, Joachim Schlichting, Bernd Wolter, S. Tesfamariam, B. Martín-Pérez, John S. Popovics, Odile Abraham, Martin Schickert, Martin Krause, Masayasu Ohtsu, Bruno Berenger
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d08e058b32813b52ce366f5c2213720
https://doi.org/10.1016/b978-1-84569-232-2.50020-x
https://doi.org/10.1016/b978-1-84569-232-2.50020-x
Autor:
K.J. Langenberg
Publikováno v:
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010).
Summary form only given, as follows. The singularity expansion method (SEM) represents the Laplace transform of a transient electromagnetic signal scattered by a target in terms of the superposition of a complex pole series and entire functions. Sinc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5310e421b3d91410760e4d8b140dbe45
https://doi.org/10.1109/aps.1999.788260
https://doi.org/10.1109/aps.1999.788260
Publikováno v:
Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society.
The acoustic wave equation with spatially varying wave number is used as the basis for setting up the ultrasonic inverse scattering problem in terms of the Porter-Bojarski integral equation, which relates measured data in terms of the holographic fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::152ae84c3a36c49575bb8f8985c99cbe
https://doi.org/10.1109/iembs.1989.95789
https://doi.org/10.1109/iembs.1989.95789
Autor:
K.J. Langenberg, D. Huo
Publikováno v:
IEEE Symposium on Ultrasonics.
A quantitative theory for 3-D inverse scattering is discussed. It is based on a formulation of the inverse problem in the whole space as a combination of the interior and exterior problems. The uniqueness of the solution, which is a major difficulty
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dd6e1d8d63efae1ac79f50b500e7ace
https://doi.org/10.1109/ultsym.1990.171483
https://doi.org/10.1109/ultsym.1990.171483
Autor:
V. Schmitz, K.J. Langenberg
Publikováno v:
Nuclear Engineering and Design. 94:427-445
Two basic aspects of numerical modelling of ultrasonic wave scattering by cracks in solids are discussed in the present paper: how do several standard mathematical procedures to obtain numerical values for scattered fields compare with respect to val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d9d3879b5a7dae352dd83111ef0f544
https://doi.org/10.1016/0029-5493(86)90026-9
https://doi.org/10.1016/0029-5493(86)90026-9
Autor:
K.J. Langenberg, G. Bollig
Publikováno v:
Wave Motion. 5:331-354
A basic problem in non-destructive testing of materials is the classification of defects with respect to size and geometry. Utilizing elastrodynamic scattering, ultrasonic test methods reduce this problem either to the application of reconstruction a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28a4e34ed27df195491fcbd1108f9e32
https://doi.org/10.1016/0165-2125(83)90021-5
https://doi.org/10.1016/0165-2125(83)90021-5
Publikováno v:
1982 Ultrasonics Symposium.
Different recording techniques of ultrasonic scattering data within a synthetic aperture in either an impulse-echo or a pitch-catch arrangement lead to different reconstruction algorithms. If broadband is used, it turns out that the definition of axi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7223d63a6a9e06d8c3ff556955eaeae2
https://doi.org/10.1109/ultsym.1982.197981
https://doi.org/10.1109/ultsym.1982.197981
Autor:
D.A. Bruck, K.J. Langenberg
Publikováno v:
1980 Ultrasonics Symposium.
A basic difficulty of holographic numerical reconstruction schemes is to extract the real crack size from the reconstructed image; for example, the reconstruction properties of Fresnel t ransforms have been shown under incorrect assumptions. An analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b49a08c3c355f651bea2b6a460490b1
https://doi.org/10.1109/ultsym.1980.197546
https://doi.org/10.1109/ultsym.1980.197546
Autor:
K.J. Langenberg
Publikováno v:
Wave Motion. 5:297-298
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::041656b4c64b94b19a6574a64477d413
https://doi.org/10.1016/0165-2125(83)90018-5
https://doi.org/10.1016/0165-2125(83)90018-5
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