Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Clemens Grünsteidl"'
Autor:
Martin Ryzy, István Veres, Thomas Berer, Michael Salfinger, Susanne Kreuzer, Guqi Yan, Edgar Scherleitner, Clemens Grünsteidl
Publikováno v:
The Journal of the Acoustical Society of America. 153:2090-2100
A method for the determination of longitudinal and transverse bulk acoustic wave attenuation from measurements of the decay-rate of two independent zero-group-velocity resonances in a couple of matched plates is presented. A linear relation is derive
Autor:
Manuel Webersen, Bernd Henning, Sarah Johannesmann, Clemens Grünsteidl, Hanna Schmiegel, Leander Claes
Publikováno v:
tm - Technisches Messen. 88:147-155
Acoustic waves in plates have proven a viable tool for testing and material characterisation purposes. There are a multitude of options for excitation and detection of theses waves, such as optical and piezoelectric systems. While optical systems, wi
Autor:
Georg Watzl, Christian Kerschbaummayr, Martin Schagerl, Thomas Mitter, Bernhard Sonderegger, Clemens Grünsteidl
Publikováno v:
Acta Materialia. 242:118435
Publikováno v:
Materialia. 26:101600
In Situ Measurement of Poisson’s Ratio of Steel Plates During Thermal Processes Using Resonant Modes
Autor:
Clemens Grünsteidl, Christian Kerschbaummayr, Edgar Scherleitner, Bernhard Reitinger, Georg Watzl, Thomas Mitter, Gerhard Angeli
Publikováno v:
2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation.
We demonstrate the determination of the Poisson’s ratio of steel plates during thermal processing based on contact free laser ultrasound measurements. Our method utilizes resonant elastic waves sustained by the plate, provides high amplitudes, and
Characterization of Roll-Cladded Aluminum Plates With Laser-Based Surface-Acoustic-Wave Measurements
Autor:
Clemens Grünsteidl, Georg Watzl, Christian Kerschbaummayr, Edgar Scherleitner, Günther Mayr, Marin Petre
Publikováno v:
2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation.
We investigated roll-cladded aluminum structures consisting of a layer of Al4045 on Al3003 with a non-destructive laser-ultrasound technique. We determined the thickness of the cladding layer based on the dispersion of the fundamental guided wave pro
Autor:
Georg Watzl, Christian Kerschbaummayr, Martin Schagerl, Thomas Mitter, Bernhard Sonderegger, Clemens Grünsteidl
Publikováno v:
Acta Materialia. 235:118097
Autor:
Marco A. Inzunza-Ibarra, Rafael Piestun, Todd W. Murray, Clemens Grünsteidl, Evolene Premillieu
Publikováno v:
Optics express. 28(7)
Focusing light through turbid media using wavefront shaping generally requires a noninvasive guide star to provide feedback on the focusing process. Here we report a photoacoustic guide star mechanism suitable for wavefront shaping through a scatteri
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
Scientific Reports
Scientific Reports
Lamb waves exhibit conical dispersion at zero wave number when an accidental degeneracy occurs between thickness mode longitudinal and shear resonances of the same symmetry. Here we investigate the propagation of Lamb waves generated at the conical p
Autor:
Istvan A. Veres, Martin Ryzy, Clemens Grünsteidl, Susanne Kreuzer, Ralph Rothemund, Thomas Berer, Mike Hettich
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
In this work we are using spatially localized acoustic resonances, so-called zero group velocity (ZGV) Lamb waves, to assess the attenuation parameters from the temporally decaying acoustic waves in thin plates. As these waves are not propagating, th