Vibration based structural health monitoring of composite skin-stiffener structures

Development of a criterion for predicting residual strength of composite structures damaged by impact loading

“…Important advances in this field have been discussed by Doebling et al (1996) studies on this subject report on the relation between natural frequency shift or modal damping changes and structural damage. In addition, Ooijevaar (2014) has presented a comprehensive list of the damage features that are used in the literature and they are presented in Table 3-2. This work, uses the green boxes of Figure 3- The first papers published in damage detection were based on natural frequencies variations between the undamaged and damaged structures (Adams et al, 1975;Vandiver, 1977). Natural frequency-based methods use the FRF (Frequency Response Function) change as the basic feature for damage identification.…”

“…Structural health monitoring is the multidisciplinary process of implementing a strategy for damage identification in a way that non-destructive testing becomes an integral part of the structure (Ooijevaar, 2014). Figure 1-5 shows a simplified process, which consists of a diagnostic and a prognostic part.…”

“…Prognostic analysis evaluates the damage evolution and estimates the residual service life. The multidisciplinary structural health monitoring process (Ooijevaar, 2014) A brief comparison of differences between traditional NDT methods and current SHM techniques is given in the …”

“…Ooijevaar, 2014 Presents the relations between the characteristics of the structure, the potential damage scenarios and the damage identification method together define the performance of the vibration based damage identification strategy. Zhu et al, 2014 Debonding detection of honeycomb sandwich structures using frequency response functions.…”

“…List of Tables Table 1-1. An overview of the most commonly used non-destructive testing -NDT (Ooijevaar, 2014 …”