Control of crack propagation in metals by the use of composites

Sridhar, MK and Basavarajappa, G and Balasubramanian, N (1979) Control of crack propagation in metals by the use of composites. In: Proceedings of the International Conference on Fracture Mechanics in Engineering Application, 26-30 Mar 1979, Bangalore, India.

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Abstract

Fatigue crack propagation in aluminium alloys has been controlled by the use of adhesively bonded carbon reinforced epoxy patches. Fatigue cracks were grown in single-edge-notched specimens under oscillating tension and procured CFRP patches were adhesively bonded in front of the crack tip. The patched specimens were again subjected to fatigue. The application of the patch stopped the cracks from further propagation. A number of microcracks nucleated near the crack tip and one of them became a macrocrack and propagated across the specimen. The residual fatigue life of the cracked specimens was increased by a factor of 10.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Adhesive bonding;Aluminium alloys;Carbon fiber;Reinforced plastics;Crack propagation;Fatigue tests;Fatigue life;Metal plates;Microcracks;Notch tests;Strain rate
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: M/S ICAST NAL
Date Deposited: 30 Nov 2006
Last Modified: 24 May 2010 09:53
URI: http://nal-ir.nal.res.in/id/eprint/3563

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