Studies on mechanical behavior of glass epoxy composites with induced defects and correlations with NDT characterization parameters

Pradeep, D and Reddy, N Janardhana and Kumar, C Rahul and Srikanth, L and Rao, RMVGK (2007) Studies on mechanical behavior of glass epoxy composites with induced defects and correlations with NDT characterization parameters. Journal of Reinforced Plastics and Composites, 26 (15). pp. 1539-1556.

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    Abstract

    Degradation in mechanical properties (compression, flexural and ILS) of glass epoxy composite laminates with induced defects (simulating delaminations) was studied. The defects were characterized by using the A-scan ultrasonic pulse-echo technique. The two A-scan parameters, viz. the back wall echo amplitude and time of flight, were followed respectively, as functions of the defect size (diameter) and its location in the laminate thickness. The mechanical properties of laminates were evaluated destructively for different defect sizes and locations. An attempt has been made to express the mechanical properties in terms of the two NDT scan parameters characterizing the defects and empirical equations presented

    Item Type: Journal Article
    Additional Information: Copyright for this article belongs to Sage Publications Ltd.,
    Uncontrolled Keywords: Composites;Defects;Non-destructive test;Ultrasonics;Pulse echo;A-scan;Delamination
    Subjects: CHEMISTRY AND MATERIALS > Composite Materials
    Division/Department: Other, Other, Fibre Reinforced Plastics Division, Fibre Reinforced Plastics Division, Fibre Reinforced Plastics Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 22 May 2009
    Last Modified: 17 Jun 2010 13:46
    URI: http://nal-ir.nal.res.in/id/eprint/4881

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