Damage Detection in Floating Structure Using Static Strain Data

Park, Soo-Yong; Jeon, Yong-Hwan

Journal of Navigation and Port Research 2012;36(3):163-168.
Published online April 30, 2012.

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Damage Detection in Floating Structure Using Static Strain Data

Soo-Yong Park, Yong-Hwan Jeon

Abstract

Recently, people’s desire for the waterfront space has been increasing, and more people want to spend their leisure time close to the water. This paper proposes a damage detection technique using the static strain for the floating structure. An existing damage index, in which the modal strain energy was utilized to identify possible location of damage, is expanded to apply the static strain. The new damage index is expressed in terms of the static strains of undamaged and damaged structures. After calculating damage index, the possible damage locations in the structure are determined by the pattern recognition technique. The accuracy and feasibility of the proposed method is demonstrated by using experimental strain data from a scale model of floating structure.

Key Words: damage detection;damage index;static strain;strain energy;floating structure