Multi-objective optimization strategies for damage detection using cloud model theory

Jin Zhou; Akira Mita; Rongshuai Li

doi:10.1117/12.914231

20 April 2012 Multi-objective optimization strategies for damage detection using cloud model theory

Jin Zhou, Akira Mita, Rongshuai Li

Proceedings Volume 8348, Health Monitoring of Structural and Biological Systems 2012; 83482R (2012) https://doi.org/10.1117/12.914231
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Cloud model is a new mathematical representation of linguistic concepts, which shows potentials for uncertainty mediating between the concept of a fuzzy set and that of a probability distribution. This paper utilizes cloud model theory as an uncertainty analyzing tool for noise-polluted signals, which formulates membership degree functions of residual errors that quantify the difference between the prediction from simulated model and the actual measured time history at each time interval. With membership degree functions a multi-objective optimization strategy is proposed, which minimizes multiple error terms simultaneously. Its non-domination-based convergence provides a stronger constraint that enables robust identification of damages with lower damage negative false. Simulation results of a structural system under noise polluted signals are presented to demonstrate the effectiveness of the proposed method.

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Jin Zhou, Akira Mita, and Rongshuai Li "Multi-objective optimization strategies for damage detection using cloud model theory", Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83482R (20 April 2012); https://doi.org/10.1117/12.914231

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KEYWORDS

Clouds

Damage detection

Optimization (mathematics)

Mathematical modeling

Fuzzy logic

Error analysis

Interference (communication)

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