Determining the spatial form of rock samples in triaxial testing cells - a fiber-optic measurement concept

  • Rocks and stone are common construction materials in geomechanics. Great difficulties arise from the inhomogeneous nature of the mechanicalhydraulic materials behavior and their materials properties. However, well-tried mathematically based engineering concepts are only valid if reliable figures of the materials properties are known. One of the important measurement tools is the triaxial fest cell. Essentially used for conducting crack and creep tests, they apply mechanical pressure to the front sides of a cylindrical rock sample. Additionally, the rock sample is exposed to a triaxial pressure by creating a hydraulic pressure inside the test cell to simulate the original environmental conditions which can be found at the site where the rock samples were extracted. Deformation measuring sensors inside the test cell are exposed to those extreme conditions as well; sensor designs have to withstand pressures up to 2000 bar. In this work, a novel fiber based deformation sensor is presentedRocks and stone are common construction materials in geomechanics. Great difficulties arise from the inhomogeneous nature of the mechanicalhydraulic materials behavior and their materials properties. However, well-tried mathematically based engineering concepts are only valid if reliable figures of the materials properties are known. One of the important measurement tools is the triaxial fest cell. Essentially used for conducting crack and creep tests, they apply mechanical pressure to the front sides of a cylindrical rock sample. Additionally, the rock sample is exposed to a triaxial pressure by creating a hydraulic pressure inside the test cell to simulate the original environmental conditions which can be found at the site where the rock samples were extracted. Deformation measuring sensors inside the test cell are exposed to those extreme conditions as well; sensor designs have to withstand pressures up to 2000 bar. In this work, a novel fiber based deformation sensor is presented in detail.zeige mehrzeige weniger

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Metadaten
Autor*innen:Harald Kohlhoff
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):31st Danubia-Adria Symposium on advances in experimental mechanics (Proceedings)
Jahr der Erstveröffentlichung:2014
Herausgeber (Institution):Verein Deutscher Ingenieure (VDI)
Erste Seite:126
Letzte Seite:127
Veranstaltung:31st Danubia-Adria Symposium on advances in experimental mechanics
Veranstaltungsort:Kempten, Germany
Beginndatum der Veranstaltung:24.09.2014
Enddatum der Veranstaltung:27.09.2014
ISBN:978-3-00-046740-0
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:30.10.2014
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