Measurements of fracture toughness applying a four-point-bending technique of ice core B34 from Kohnen Station, Dronning Maud Land, Antarctica

The critical fracture toughness is a material parameter describing the resistance of a cracked body to further crack extension. It is an important parameter to simulate and predict the break-up behaviour of ice shelves from calving of single icebergs to the disintegration of entire ice shelves over...

Full description

Bibliographic Details
Main Authors: Christmann, Julia, Müller, Ralf, Webber, Kyle G, Isaia, Daniel, Schader, Florian H, Kipfstuhl, Sepp, Freitag, Johannes, Humbert, Angelika
Format: Dataset
Language:English
Published: PANGAEA 2014
Subjects:
B34
Density
snow
DEPTH
ice/snow
Dronning Maud Land
Antarctica
EPICA
EPICA-Campaigns
European Project for Ice Coring in Antarctica
Fracture toughness
ICEDRILL
Ice drill
Kohnen Station
Sample code/label
see comment
Antarctic
Kohnen
Antarc*
ice core
Ice Shelves
Iceberg*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.835321
https://doi.org/10.1594/PANGAEA.835321
Description
Summary:The critical fracture toughness is a material parameter describing the resistance of a cracked body to further crack extension. It is an important parameter to simulate and predict the break-up behaviour of ice shelves from 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 inland ice samples with densities between 840 to 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°00' S, 00°04' E, 2882 m).

Similar Items