Measurement of the fracture toughness of polycrystalline bubbly ice from an Antarctic ice core

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Christmann J, Mueller R, Webber K, Isaia D, Schader FH, Kipfstuhl S, Freitag J, Humbert A
Zeitschrift: Earth System Science Data
Verlag: Copernicus Publications
Jahr der Veröffentlichung: 2015
Band: 7
Seitenbereich: 87-92
ISSN: 1866-3508


Abstract


The critical fracture toughness is a material parameter describing the resistance of a cracked body to further crack extension. It is an important parameter for simulating and predicting the breakup behavior of ice shelves from the calving of single icebergs to the disintegration of entire ice shelves over a wide range of length scales. The fracture toughness values are calculated with equations that are derived from an elastic stress analysis. Additionally, an X-ray computer tomography (CT scanner) was used to identify the density as a function of depth. The critical fracture toughness of 91 Antarctic bubbly ice samples with densities between 840 and 870 kg m(-3) has been determined by applying a four-point bending technique on single-edge v-notched beam samples. The examined ice core was drilled 70m north of Kohnen Station, Dronnning Maud Land (75 degrees 00' S, 00 degrees 04' E; 2882 m). Supplementary data are available at doi: 10.1594/PANGAEA.835321.



FAU-Autoren / FAU-Herausgeber

Webber, Kyle Prof.
Professur für Werkstoffwissenschaften (Funktionskeramik)


Autor(en) der externen Einrichtung(en)
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (AWI)
Technische Universität Darmstadt
Technische Universität Kaiserslautern


Zitierweisen

APA:
Christmann, J., Mueller, R., Webber, K., Isaia, D., Schader, F.H., Kipfstuhl, S.,... Humbert, A. (2015). Measurement of the fracture toughness of polycrystalline bubbly ice from an Antarctic ice core. Earth System Science Data, 7, 87-92. https://dx.doi.org/10.5194/essd-7-87-2015

MLA:
Christmann, J., et al. "Measurement of the fracture toughness of polycrystalline bubbly ice from an Antarctic ice core." Earth System Science Data 7 (2015): 87-92.

BibTeX: 

Zuletzt aktualisiert 2018-11-08 um 02:45