Fatigue crack growth study of CFRP patch repaired Al 2014-T6 panel having an inclined center crack using FEA and DIC

Srilakshmi, R and M, Ramji and Chinthapenta, Viswanath (2015) Fatigue crack growth study of CFRP patch repaired Al 2014-T6 panel having an inclined center crack using FEA and DIC. Engineering Fracture Mechanics, 134. pp. 182-201. ISSN 0013-7944

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Abstract

In this work, the fatigue life of unrepaired and repaired Al-2014-T6 panels with an inclined center crack is investigated. Cracked panels are repaired through single-and double-sided adhesively bonded carbon fiber reinforced polymer (CFRP) patch. The fatigue crack growth is monitored experimentally using digital image correlation and numerically using 3D finite element analysis. The adhesive-interface between the panel and patch is modeled using bilinear cohesive law. The CFRP/Al-2014-T6 adhesive-interface properties are obtained from the baseline tests. Fatigue life of double-sided repaired panel is observed to be twice that of single-sided. And non-uniform crack front is observed in single-sided repaired panels.

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IITH Creators:
IITH CreatorsORCiD
M, RamjiUNSPECIFIED
Chinthapenta, ViswanathUNSPECIFIED
Item Type: Article
Additional Information: The authors are also thankful to Mr. N. Jagannathan Scientist-C, CSIR-NAL, Bangalore for valuable suggestions in conducting fatigue crack growth experiments of Al 2014-T6 alloy and to the IITH central workshop for fabricating the specimens.
Uncontrolled Keywords: Aluminium alloys; Cohesive zone modeling; Digital image correlation; Fatigue crack growth; Bonded joints
Subjects: Materials Engineering > Materials engineering
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 27 May 2015 08:59
Last Modified: 01 Sep 2017 06:43
URI: http://raiithold.iith.ac.in/id/eprint/1539
Publisher URL: https://doi.org/10.1016/j.engfracmech.2014.12.012
OA policy: http://www.sherpa.ac.uk/romeo/issn/0013-7944/
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