CUED Publications database

Numerical analysis of cracked marine structures repaired with composite patches

Avgoulas, EI and Karatzas, VA and Zilakos, IK and Tsouvalis, NG (2013) Numerical analysis of cracked marine structures repaired with composite patches. In: UNSPECIFIED pp. 367-375..

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The vast majority of ships and marine structures are inevitably facing typical defects such as corrosion and cracks. A new and quite promising repair method is using composite material patches. This work consists of a numerical simulation of such repairs in a cracked structural component of an Aframax tanker. Following IACS's Common Structural Rules, cracks of different lengths and in two locations around the manhole of a hopper tank transverse web frame were modeled. Different composite patch configurations were applied and studied for each crack case. The stress field in the area around the crack was calculated, along with the stress intensity factors, prior and after composite patch repairing. Results showed that stresses are significantly reduced and that the reduction of the stress intensity factor after the repair ranges between 51% and 93% compared to the unpatched case, thus significantly slowing down, or in some cases even practically arresting, the crack growth. © 2013 Taylor & Francis Group.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:25
Last Modified: 22 May 2018 06:20