Gain-Phase Error-Calibrated Piezoelectric Sensor Array-Based Impact Localization on Stiffened Curved Composite Structures

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 15; p. 5879
• Main Authors: Wang, Zhiling, Zhou, Jinyu, Zhong, Yongteng, Li, Chaoyue
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 05.08.2022; MDPI
• Subjects: Acoustics; Aircraft; Algorithms; calibrated 2D-MUSIC; Calibration; Composite structures; Continuous wavelet transform; Covariance matrix; Curved panels; Experiments; impact localization; Linear arrays; Localization; Localization method; Music; Phase error; piezoelectric sensor array; Propagation; Sensor arrays; Sensors; stiffened curved panels; Wave packets; Wavelet transforms

Stiffened structure-induced gain-phase errors degrade the performance of the high-resolution two-dimensional multiple signal classification (2D-MUSIC) algorithm, which makes it impossible to ensure the high accuracy of impact localization results. To eliminate the localization bias caused by these e...