Structural health monitoring using shaped sensors

This paper is concerned with distributed sensors to measure the response of beam and plate structures. The design of modal sensors for beam structures is well established. The design for plate structures with constant thickness sensors may be achieved by optimizing the shape of the sensor boundary, or by optimizing the effectiveness of the electrode. Most applications consider vibration control, but this paper is concerned with structural health monitoring, where the sensor output is made sensitive to changes in key stiffness parameters, for example in joints. The procedure is based on finite element models of the structures, and thus distributed transducers may be designed for arbitrary beam and plate structures. Simulated examples of a beam and a plate excited by a rotating machine are used to demonstrate the approach.

[1]  Jerzy T. Sawicki,et al.  STRUCTURAL DAMAGE DETECTION USING MODAL NORMS , 2000 .

[2]  J. Kim,et al.  OPTIMAL GAIN DISTRIBUTION FOR TWO-DIMENSIONAL MODAL TRANSDUCER AND ITS IMPLEMENTATION USING MULTI-LAYERED PVDF FILMS , 2002 .

[3]  Marcelo A. Trindade,et al.  Optimization of modal filters based on arrays of piezoelectric sensors , 2009 .

[4]  Daniel J. Inman,et al.  An Integrated Health Monitoring Technique Using Structural Impedance Sensors , 2000 .

[5]  Hoon Sohn,et al.  Statistical Damage Classification Under Changing Environmental and Operational Conditions , 2002 .

[6]  Michael I Friswell,et al.  Damage identification using inverse methods , 2007, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences.

[7]  José Carlos Bellido,et al.  Distributed piezoelectric modal sensors for circular plates , 2009 .

[8]  Michael I. Friswell,et al.  Distributed Modal Sensors for Rectangular Plate Structures , 2007 .

[9]  Robert D. Adams,et al.  The location of defects in structures from measurements of natural frequencies , 1979 .

[10]  L. Peterson,et al.  Estimation of reciprocal residual flexibility from experimental modal data , 1996 .

[11]  Nobuo Tanaka,et al.  Modal control of a rectangular plate using smart sensors and smart actuators , 2007 .

[12]  D. Dawe,et al.  Matrix and finite element displacement analysis of structures , 1984 .

[13]  Michael I. Friswell,et al.  Designing distributed modal sensors for plate structures using finite element analysis , 2006 .

[14]  Paul D. Wilcox,et al.  Ultrasonic arrays for non-destructive evaluation: A review , 2006 .

[15]  P.D. Wilcox,et al.  Omni-directional guided wave transducer arrays for the rapid inspection of large areas of plate structures , 2003, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[16]  Uwe Prells,et al.  Selective sensitivity in the frequency domain--II. Applications , 1993 .

[17]  Liyong Tong,et al.  Modal actuator/sensor by modulating thickness of piezoelectric layers for smart plates , 2002 .

[18]  José Carlos Bellido,et al.  TECHNICAL NOTE: Tailoring distributed modal sensors for in-plane modal filtering , 2009 .

[19]  Michael I. Friswell,et al.  Crack modelling for structural health monitoring , 2002 .

[20]  Francis C. Moon,et al.  Modal Sensors/Actuators , 1990 .

[21]  André Preumont,et al.  Vibration based damage detection using large array sensors and spatial filters , 2006 .

[22]  Wodek Gawronski.  Modal actuators and sensors , 2000 .

[23]  André Preumont,et al.  Spatial filters in structural control , 2003 .

[24]  Michael I. Friswell.  Partial and Segmented Modal Sensors for Beam Structures , 1999 .

[25]  Charles R. Farrar,et al.  A summary review of vibration-based damage identification methods , 1998 .

[26]  Robert L. Clark,et al.  Practical Limitations in Achieving Shaped Modal Sensors With Induced Strain Materials , 1996 .

[27]  M. Friswell.  ON THE DESIGN OF MODAL ACTUATORS AND SENSORS , 2001 .

[28]  John E. T. Penny,et al.  Crack Modeling for Structural Health Monitoring , 2002 .

[29]  Uwe Prells,et al.  Selective sensitivity in the frequency domain--I. Theory , 1993 .

[30]  Seung Jo Kim,et al.  Design of Modal Transducers by Optimizing Spatial Distribution of Discrete Gain Weights , 2001 .

[31]  Yakov Ben-Haim.  Adaptive diagnosis of faults in elastic structures by static displacement measurement: The method of selective sensitivity , 1992 .

[32]  José Carlos Bellido,et al.  Systematic design of distributed piezoelectric modal sensors/actuators for rectangular plates by optimizing the polarization profile , 2008 .

[33]  G. De Roeck,et al.  Vibration based Structural Health Monitoring using output-only measurements under changing environment , 2008 .

[34]  Yakov Ben-Haim,et al.  Updating linear elastic models with modal selective sensitivity , 1995 .

[35]  M I Friswell,et al.  USING VIBRATION DATA STATISTICAL MEASURES TO LOCATE DAMAGE IN STRUCTURES , 1994 .