Novel Damage Detection Techniques for Structural Health Monitoring Using a Hybrid Sensor

Abstract

This study presents a technique for detecting fatigue cracks based on a hybrid sensor monitoring system consisting of a combination of intelligent coating monitoring (ICM) and piezoelectric transducer (PZT) sensors. An experimental procedure using this hybrid sensor system was designed to monitor the cracks generated by fatigue testing in plate structures. A probability of detection (POD) model that quantifies the reliability of damage detection for a specific sensor or the nondestructive testing (NDT) method was used to evaluate the weight factor for the ICM and PZT sensors. To estimate the uncertainty of model parameters in this study, the Bayesian method was employed. Realistic data from fatigue testing was used to validate the overall method, and the results show that the novel damage detection technique using a hybrid sensor can quantify fatigue cracks more accurately than results obtained by conventional sensor methods.

Lamb-Wave-Based Tomographic Imaging Techniques for Hole-Edge Corrosion Monitoring in Plate Structures

“…For crack damage, references [ 38 , 39 , 40 , 41 ] show that the S 0 mode of the Lamb wave is more sensitive to crack damage, and the damage features extracted from the Lamb wave are different from that of corrosion damage. As in reference [ 28 ], the normalized amplitude and phase change are extracted to quantify the hole-edge crack damage. In this paper, the proposed method is only used to monitor the hole-edge corrosion damage.…”

“…He et al discovered three signal features of Lamb waves and developed a data-driven model to quantify the crack size at the riveted hole [ 27 ]. In reference [ 28 ], a novel hybrid sensor, which included PZT sensors and intelligent coating sensors, was proposed to monitor the crack damage at the edge of the hole. The S 0 mode of the Lamb wave was used, and the normalized amplitude and phase change of S 0 mode were extracted as damage features.…”

Localization of Damages in Plain And Riveted Aluminium Specimens using Lamb Waves

“…Wang et al presented a technique for detecting fatigue cracks based on a hybrid sensor monitoring system consisting of a combination of intelligent coating monitoring (ICM) and piezoelectric sensors. 18 A probability of detection (POD) model that quantifies the reliability of damage detection for a sensor is used to evaluate the weight factor for the ICM and piezoelectric sensors. Masurkar et al presented a damage localization approach using a two stage method.…”

Structural health monitoring of rotary aerospace structures based on electromechanical impedance of integrated piezoelectric transducers

“…In the past decade, the majority of research works in the field of structural health monitoring (SHM) have been thus far focused on the development of damage detection and localization algorithms using various approaches such as laser Doppler velocimetry, fiber Bragg grating, piezoelectric wafer active sensors (PWASs), piezoelectric paint, and intelligent resistive coating materials (Bai et al, 2015; Barazanchy et al (2014); Cao and Ouyang, 2016; Chinde et al, 2016; Fan and Qiao, 2011; Feng et al, 2014; Giurgiutiu, 2014; Kaloop and Hu, 2015; Kharroub et al, 2015; Kumar and Reddy, 2016; Peters and Webb, 2015; Statham, 2011; Wang et al (2016); Witos, 2008; Xu and Giurgiutiu, 2005, 2006; Yang and Fritzen, 2011a, 2011b, 2012) Zhao et al (2007). SHM based on electromechanical impedance (EMI) of piezoelectric transducers was first reported by Giurgiutiu and Zagrai (2000) to compare the impedance/admittance frequency spectrum of pristine and damaged specimens, particularly at an ultrasonic frequency range of 100 Hz–12 MHz.…”