Predictive modeling of space structures for SHM with PWAS transducers

This paper presents an investigation of predictive modeling of space structures for structural health monitoring (SHM) with piezoelectric wafer active sensors (PWAS) transducers. The development of a suitable SHM system for complex space structure is not trivial; creating a robust SHM capability requires at least: (a) flexible accommodation of numerous configurations; (b) detection of damage in complex multifunctional structures; (c) identification if mechanical interfaces are properly connected. To realize this, we propose a predictive modeling approach using both analytical tools and finite element method (FEM) to study the health status of the structure, the power and energy transduction between the structure and the PWAS. After a review of PWAS principles, the paper discusses the modeling and the power and energy transduction between structurally guided waves and PWAS. The use of guided wave (GW) and the capability of embedded PWAS to perform in situ nondestructive evaluation (NDE) are explored. FEM codes are used to simulate GW of 2D and 3D space structure using the commercials software ABAQUS. PWAS transducers placement at different location on a flat plate and on an isogrid panel was simulated. The signal scattered by a crack emerging from the hole is simulated. Predictive modeling of power and energy transduction is discussed using an analytical approach. This model of 2-D power and energy transduction of PWAS attached to structure allows examination of power and energy flow for a circular crested wave pattern. Wave propagation method for an infinite boundary plate, electromechanical energy transformation of PWAS and structure, and wave propagation energy spread out in 2-D plate are considered. The parametric study of PWAS size, impedance match gives the PWAS design guideline for PWAS sensing and power harvesting applications.Copyright © 2011 by ASME

[1]  H. Lamb.  On waves in an elastic plate , 1917 .

[2]  Sébastien Grondel,et al.  The propagation of Lamb waves in multilayered plates: phase-velocity measurement , 1999 .

[3]  W. C. Nelson.  DEPARTMENT OF AERONAUTICAL AND ASTRONAUTICAL ENGINEERING , 2008 .

[4]  T. Grahn.  Lamb wave scattering from a circular partly through-thickness hole in a plate , 2003 .

[5]  J. Achenbach.  Wave propagation in elastic solids , 1962 .

[6]  Victor Giurgiutiu,et al.  Finite element simulation of piezoelectric wafer active sensors for structural health monitoring with coupled-filed elements , 2007, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[7]  D. Royer,et al.  Elastic waves in solids , 1980 .

[8]  J. Rose.  Ultrasonic Waves in Solid Media , 1999 .

[9]  Yi Lu,et al.  Damage detection using piezoelectric transducers and the Lamb wave approach: I. System analysis , 2008 .

[10]  Yih-Hsing Pao,et al.  Elastic Waves in Solids , 1983 .

[11]  I. A. Viktorov.  Rayleigh and Lamb Waves: Physical Theory and Applications , 1967 .

[12]  P. Wilcox,et al.  The effect of dispersion on long range inspection using ultrasonic guided waves , 2001 .

[13]  Bin Lin,et al.  Modeling of power and energy transduction of embedded piezoelectric wafer active sensors for structural health monitoring , 2010, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[14]  Bin Lin,et al.  Simplified 2D modeling of power and energy transduction of piezoelectric wafer active sensors for structural health monitoring , 2011, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[15]  Brandon Arritt,et al.  Damage Detection in Bolted Space Structures , 2010 .

[16]  Marek Krawczuk,et al.  Propagation of in-plane waves in an isotropic panel with a crack , 2006 .

[17]  Irving J. Oppenheim,et al.  The transition from Lamb waves to longitudinal waves in plates , 2008 .

[18]  Yaowen Yang,et al.  Electromechanical impedance modeling of PZT transducers for health monitoring of cylindrical shell structures , 2008 .

[19]  Brandon Arritt,et al.  Wave Propagation in Rib-Stiffened Structures: Modeling and Experiments , 2010 .

[20]  L. Ye,et al.  Quantitative assessment of through-thickness crack size based on Lamb wave scattering in aluminium plates , 2008 .