Banerjee, Rajat and Sarkar, Bijit Kumar (1996) Deformation of sodalime glass under repeated indentation. Transactions of The Indian Institute of Metals, 49 (4). pp. 611-615. ISSN 0972-2815

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Abstract

Fracture mechanics studies on glass by indentation techniques have become predominant in recent times. Several techniques have been adopted to initiate crack in the material followed by repeated indentation at the same spot for crack growth and fatigue studies. However glass subjected to to repeated indentation at a point prior to crack initiation at a subcritical loads phenomenological to metal fatigue was not systematically investigated. Experiment was conducted to initiate cracks on normal sodalime glass by repeated indentation at a single point with different subcritical (0.1 N, 0.15 N, 0.25 N, 0.50 N, 1.0 N) loads. Experiment was discontinued the moment crack was observed to occur. The length of diagonals were found to increase with each indentation leading to crack initiation. This observation was analysed considering the plastic component and the residual force developed during each indentation cycle and a model has been developed to correlate the contribution of cumulative residual stress for crack initiation.

Item Type: Article
Additional Information: Workshop on the Phenomena of Creep, Fatigue, and Creep-Fatigue Interactions, INDIRA GANDHI CTR ATOM RES, KALPAKKAM, INDIA, FEB 15-17, 1995
Subjects: Glass
Divisions: Director´┐Żs Secretariat
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Jul 2012 07:00
Last Modified: 30 Jul 2012 07:00
URI: http://cgcri.csircentral.net/id/eprint/1678

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