Damage diagnostic technique for structural health monitoring using POD and self adaptive differential evolution algorithm

  • Authors:
  • A. Rama Mohan Rao;K. Lakshmi;Dhanya Venkatachalam

  • Affiliations:
  • CSIR-Structural Engineering Research Centre, Council of Scientific and Industrial Research, Taramani, Chennai 600 113, India;CSIR-Structural Engineering Research Centre, Council of Scientific and Industrial Research, Taramani, Chennai 600 113, India;CSIR-Structural Engineering Research Centre, Council of Scientific and Industrial Research, Taramani, Chennai 600 113, India

  • Venue:
  • Computers and Structures
  • Year:
  • 2012

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Abstract

This paper presents a damage detection technique combining proper orthogonal decomposition (POD) with self-adaptive differential evolution algorithm for structural health monitoring considering environmental variability and measurement noises. The damage detection methodology consists of three stages. Identification of the exact time instant of damage and exact spatial location of damage using proper orthogonal modes constitutes the first two stages. The damage severity assessment is the third stage and is formulated as a constrained optimisation problem, solved using newly proposed self-adaptive differential evolution algorithm. Numerical simulation studies indicate that the proposed method is robust and can be used effectively in SHM applications.