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A Simple Recovery Technique for Shock Wave Studies of Brittle Materials

Eine einfache Rückgewinnungstechnik für Schockwellenuntersuchungen an spröden Materialien
: Winkler, W.-D.; Nahme, H.

Schmidt, S.C.; Shaner, J.W. ; International Association for the Advancement of High Pressure Science and Technology -AIRAPT-; Amerian Physical Society -APS-, Topical Group on Shock Compression of Condensed Matter:
High Pressure Science and Technology 1993. Proceedings
New York/N.Y.: AIP, 1993 (AIP Conference Proceedings 309)
ISBN: 1-563-96219-5
Topical Conference on Shock Compression of Condensed Matter Conference <1993, Colorado Springs/Colo.>
Conference Paper
Fraunhofer EMI ()
Entlastungswelle; planar-plate impact technique; Platten-Impakt; recovery technique; release wave; Rückgewinnungstechnik; Scherspannung; Scherwelle; shear stress; shear wave; Spallation; TiB2; Titandiborid; Titanium-Diboride; VISAR

Taking advantage of the wave propagation properties of planar shock waves and shock-induced shear stress allows planar plate impact experiments with brittle materials without the need of complicated sample geometries (star flyer). An appropriate shape of the sabot (flyer carrier) and the use of a brittel flyer plate are sufficient to induce shear stress in both plates, separating the plate edges from the central regions. So an influence of rarefaction wave emanating from the edges towards the central regions is avoided. This recovery technique has been successfully used during the investigation of the microstructural response of shock-loaded TiB2, with VISAR measurements carried out simultaneously. Recent recovery experiments with Al2O3 confirm these results.