Exact Shear-Lag Solution for Guided Waves Tuning with Piezoelectric-Wafer Active Sensors

AIAA Journal ◽  
2012 ◽  
Vol 50 (11) ◽  
pp. 2285-2294 ◽  
Author(s):  
Giola Santoni-Bottai ◽  
Victor Giurgiutiu
Keyword(s):  
Guided Waves ◽  
Shear Lag ◽  
Active Sensors ◽  
Piezoelectric Wafer Active Sensors ◽  
Piezoelectric Wafer

scholarly journals Piezoelectric Wafer Active Sensors for Structural Health Monitoring of Composite Structures Using Tuned Guided Waves

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Victor Giurgiutiu
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Composite Structures ◽  
Guided Waves ◽  
Guided Wave ◽  
Impedance Method ◽  
Active Sensors ◽  
Structural Health ◽  
Piezoelectric Wafer Active Sensors ◽  
Piezoelectric Wafer

Piezoelectric wafer active sensors (PWAS) are lightweight and inexpensive transducers that enable a large class of structural health monitoring (SHM) applications such as: (a) embedded guided wave ultrasonics, i.e., pitch-catch, pulse-echo, phased arrays; (b) high-frequency modal sensing, i.e., the electro-mechanical (E/M) impedance method; and (c) passive detection (acoustic emission and impact detection). The focus of this paper is on the challenges posed by using PWAS transducers in the composite structures as different from the metallic structures on which this methodology was initially developed. After a brief introduction, the paper reviews the PWAS-based SHM principles. It follows with a discussion of guided wave propagation in composites and PWAS tuning effects. Then, it discusses damage modes in composites. Finally, the paper presents some experimental results with damage detection in composite specimens. Hole damage and impact damage were detected using pitch-catch method with tuned guided waves being sent between a transmitter PWAS and a received PWAS. Root mean square deviation (RMSD) damage index (DI) were shown to correlate well with hole size and impact intensity. The paper ends with summary and conclusion; suggestions for further work are also presented.

Guided waves sensing with piezoelectric wafer active sensors

2020 ◽  
Author(s):  
A. N. Shpak ◽  
M. V. Golub ◽  
S. A. Glinkova ◽  
S. I. Fomenko ◽  
I. Mueller
Keyword(s):  
Guided Waves ◽  
Active Sensors ◽  
Piezoelectric Wafer Active Sensors ◽  
Piezoelectric Wafer

scholarly journals Space Application of Piezoelectric Wafer Active Sensors for Structural Health Monitoring

2010 ◽  
Author(s):  
Victor Giurgiutiu ◽  
Giola Santoni-Bottai ◽  
Bin Lin ◽  
Adrian Cuc
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Guided Waves ◽  
Active Sensors ◽  
Space Applications ◽  
Structural Health ◽  
Piezoelectric Wafer Active Sensors ◽  
Challenges And Opportunities ◽  
Piezoelectric Wafer ◽  
Power And Energy

Piezoelectric wafer active sensors (PWAS) are lightweight and inexpensive enablers for a large class of structural health monitoring (SHM) applications. This paper presents and discusses the challenges and opportunities related to the use of PWAS in the structures specific to space applications. The challenges posed by space structures are often different from those encountered in conventional structures. After a review of PWAS principles, the paper discusses the multi-physics power and energy transduction between structurally guided waves and PWAS; predictive modeling results using a simplified analytical approach are presented. Experimental results on space-like specimen structures are presented. Survivability of PWAS transducers under cryogenic space-like conditions are experimentally verified. The paper ends with conclusions and suggestions for further work.

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