PCA Based Stress Monitoring of Cylindrical Specimens Using PZTs and Guided Waves
AbstractSince mechanical stress in structures affects issues such as strength, expected operational life and dimensional stability, a continuous stress monitoring scheme is necessary for a complete integrity assessment. Consequently, this paper proposes a stress monitoring scheme for cylindrical specimens, which are widely used in structures such as pipelines, wind turbines or bridges. The approach consists of tracking guided wave variations due to load changes, by comparing wave statistical patterns via Principal Component Analysis (PCA). Each load scenario is projected to the PCA space by means of a baseline model and represented using the Q-statistical indices. Experimental validation of the proposed methodology is conducted on two specimens: (i) a 12.7 mm (
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Quiroga, J.; Mujica, L.; Villamizar, R.; Ruiz, M.; Camacho, J. PCA Based Stress Monitoring of Cylindrical Specimens Using PZTs and Guided Waves. Sensors 2017, 17, 2788.
Quiroga J, Mujica L, Villamizar R, Ruiz M, Camacho J. PCA Based Stress Monitoring of Cylindrical Specimens Using PZTs and Guided Waves. Sensors. 2017; 17(12):2788.Chicago/Turabian Style
Quiroga, Jabid; Mujica, Luis; Villamizar, Rodolfo; Ruiz, Magda; Camacho, Jhonatan. 2017. "PCA Based Stress Monitoring of Cylindrical Specimens Using PZTs and Guided Waves." Sensors 17, no. 12: 2788.
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