Volume 123, Number 1, July 2018
|Number of page(s)||7|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||13 August 2018|
Shape transformation of a wake following the process zone at the tip of a propagating crack
1 Zum Waldeskühl 12, 54298 Igel, Germany
2 Institute for Problems of Mechanical Engineering, RAS - Bol'shoi prosp. V. O. 61, 199178 St. Petersburg, Russia
Received: 15 January 2018
Accepted: 2 July 2018
A process zone containing a new phase often forms at the tip of a crack in a quasi-brittle solid. We study such a zone engendered by the propagating crack. We show that depending on the crack speed, V, this zone has two distinct configurations. If the crack tip velocity is small, the zone takes a concave shape. As soon as V exceeds a critical value, , the zone becomes convex. A metastable remnant, the wake, forms in its rear part. It is stretched backward over a great distance and exhibits a triangle configuration with the vertex angle decreasing with speed. The morphological zone transition and the wake shape is explained by competition of the velocity of a free, plane phase front and the crack tip speed.
PACS: 62.20.mt – Cracks / 83.10.Tv – Structural and phase changes
© EPLA, 2018
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.