A thermodynamic correlation between damage and fracture as applied to concrete fatigue

Fathima, Pervaiz KM and Kishen, Chandra JM (2015) A thermodynamic correlation between damage and fracture as applied to concrete fatigue. In: ENGINEERING FRACTURE MECHANICS, 146 . pp. 1-20.

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Abstract

Fatigue damage in concrete is characterized by the simultaneous presence of micro and macrocracics. The theory of fracture mechanics conveniently handles the propagation of macrocracks, whereas damage mechanics precisely describes the state of microcracking. This paper provides a platform to correlate fracture mechanics and damage mechanics theories through an energy equivalence within a thermodynamic framework by equating the energy dissipated according to each theory. Through this correlation, damage corresponding to a given crack length could be obtained, and alternatively a discrete crack could be transformed into an equivalent damage zone. The results are validated using available experimental data on concrete fatigue including stiffness degradation and acoustic emission. (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	ENGINEERING FRACTURE MECHANICS
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Keywords:	Thermodynamics; Damage mechanics; Fracture mechanics; Fatigue; Concrete
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	12 Nov 2015 05:07
Last Modified:	12 Nov 2015 05:07
URI:	http://eprints.iisc.ac.in/id/eprint/52726

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