Volume 34, Number 7, June I 1996
|Page(s)||549 - 554|
|Section||Cross-disciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
The direct observation of the core region of a propagating fracture crack in glass
CNRS/Saint-Gobain - 39 Quai Lucien Lefranc, 93303 Aubervilliers, France
Accepted: 16 April 1996
We present the first direct observation (at the nanometre scale) of the far end of a crack tip during propagation. This is achieved by use of an Atomic Force Microscope (AFM) in the case of the so-called brittle fracture. Beside the expected elastic deformation of the surface, the data analysis suggests that a plastic behaviour may take place in the vicinity of the flaw, over a distance of about 50 nm. Also, the experimental method presented here permits to accurately follow the motion (velocity and path) of the crack in the sub-critical regime; consequently, this approach is very likely to be of broad interest in the field of fracture.
PACS: 83.50.Tq – Wave propagation, shocks, fracture, and crack healing / 62.20.Mk – Fatigue, brittleness, fracture, and cracks / 61.16.Ch – Scanning probe microscopy: scanning tunneling, atomic force, magnetic, etc
© EDP Sciences, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.