Application of a robust vibration-based non-destructive method for detection of fatigue cracks in structures

Application of a robust vibration-based non-destructive method for detection of fatigue cracks in structures

This paper presents the application of a novel vibration-based technique for detecting fatiguecracks in structures. The method utilizes the empirical mode decomposition method (EMD) toestablish an effective energy-based damage index. To investigate the feasibility of the method,fatigue cracks of different sizes were introduced in an aluminum beam subjected to a cyclic loadunder a three-point bending configuration. The vibration signals corresponding to the healthyand the damaged states of the ...

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A Non-destructive Damage Detection Method for Reinforced Concrete Structures Based on Modal Strain Energy

A Non-destructive Damage Detection Method for Reinforced Concrete Structures Based on Modal Strain Energy

In recent years, much research and development has been carried out on the use of vibration characteristics to detect structural damage in various types of structures. Being a type of the widely developed methods, the vibrations based damage detection methods, in particular modal based methods, are found to be promising in assessing the ldquo;health rdquo; condition of a structure in terms of locating and quantifying damage. However, despite of advances in vibration based damage detection ...

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