Experimental measurement of elastic-plastic fracture parameters using Digital Image Correlation method

0453631 - ÚTAM 2016 RIV CH eng C - Conference Paper (international conference)
Jandejsek, Ivan - Vavřík, Daniel
Experimental measurement of elastic-plastic fracture parameters using Digital Image Correlation method.
Applied Mechanics and Materials. Vol. 821. Zürich: Trans Tech Publications, 2016 - (Fischer, C.), s. 442-449. ISBN 978-3-03835-700-1.
[Engineering mechanics 2015 /21./. Svratka (CZ), 11.05.2015-14.05.2015]
R&D Projects: GA ČR(CZ) GA15-07210S
Keywords : J-integral * J-R curve * CTOD * DIC
Subject RIV: JL - Materials Fatigue, Friction Mechanics

This paper presents a complex experimental measurement of elastic-plastic fracture
parameters such as J-integral, CTOD and J-resistance curve for ductile metallic materials with
single specimen test employing the Digital Image Correlation method. Main advantage of the
approach is that it allows evaluation of the parameters directly from its definitions in contrast to
current standardized measurements defined mostly by ASTM where the parameters are evaluated
indirectly. Moreover, the method provides other useful information such as the extent and shape of a plastic zone in the vicinity of a crack tip. The presented method is employed in the case of thinsheet aluminium alloy. Different approaches to determine a critical value of J-integral (i.e. fracture toughness of the material) are presented.
Permanent Link: http://hdl.handle.net/11104/0254390