Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing

Structural health monitoring using Lamb waves is based on guided waves introduced to a structure at one point and sensed at a different location. Actuation and sensing can be accomplished using various types of transducer. The paper demonstrates a non-contact method for low-frequency Lamb wave sensing. The technique utilizes a laser Doppler velocimeter. Lamb wave responses are enhanced using data smoothing and filtering procedures. The results are validated using classical piezoceramic-based sensing and numerical simulations. The study shows the potential of laser vibrometry for Lamb wave sensing.

[1]  R. S. Schechter,et al.  Connection Machine Simulation of the Ultrasonic Wave Propagation in Materials III: the 3-D case , 1997 .

[2]  Anindya Ghoshal,et al.  Damage detection using finite element and laser operational deflection shapes , 2002 .

[3]  David J. Ewins,et al.  MODAL TESTING USING A SCANNING LASER DOPPLER VIBROMETER , 1999 .

[4]  P. Frank Pai,et al.  Detection of Defects in Circular Plates using a Scanning Laser Vibrometer , 2002 .

[5]  S. Mallat.  A wavelet tour of signal processing , 1998 .

[6]  I. A. Viktorov.  Rayleigh and Lamb Waves , 1967 .

[7]  R. Dewhurst,et al.  Optical remote measurement of ultrasound , 1999 .

[8]  L. Koo,et al.  Noncontacting ultrasonic and electromagnetic HTS tape NDE , 1997, IEEE Transactions on Applied Superconductivity.

[9]  D. J. Ewins,et al.  Modal Testing: Theory and Practice , 1984 .

[10]  William H. Press,et al.  Numerical recipes in C , 2002 .

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

[12]  William H. Press,et al.  Numerical Recipes in C, 2nd Edition , 1992 .

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

[14]  Ingrid Daubechies,et al.  Ten Lectures on Wavelets , 1992 .

[15]  P. Cawley,et al.  The interaction of Lamb waves with delaminations in composite laminates , 1993 .

[16]  L. Jacobs,et al.  Characterization of adhesive bond properties using Lamb waves , 2000 .

[17]  B Culshaw,et al.  Condition monitoring in composite materials: An integrated systems approach , 1998 .

[18]  Andrew C. Tam,et al.  Optical monitoring of photoacoustic pulse propagation in silicon wafers , 1985 .

[19]  Jean-Pierre Monchalin,et al.  Broadband optical detection of ultrasound by two‐wave mixing in a photorefractive crystal , 1991 .

[20]  Pier Paolo Delsanto,et al.  Connection Machine Simulation of Ultrasonic Wave Propagation: Two Dimensional Case , 1992 .

[21]  Shoichi Kobayashi,et al.  Determination of Stress-Acoustic Coefficients of Rayleigh Wave by Use of Laser Doppler Velocimetry , 2001 .

[22]  Emmanuel Moulin,et al.  Piezoelectric transducer embedded in a composite plate: Application to Lamb wave generation , 1997 .

[23]  W. Staszewski,et al.  Modelling of Lamb waves for damage detection in metallic structures: Part II. Wave interactions with damage , 2003 .

[24]  Wieslaw J. Staszewski,et al.  Damage detection in composite materials using optical fibers: recent advances in signal processing , 2000, Smart Structures.

[25]  C. K. Yuen,et al.  Digital Filters , 1979, IEEE Transactions on Systems, Man, and Cybernetics.

[26]  P. Delsanto,et al.  Connection machine simulation of ultrasonic wave propagation in materials. I: the one-dimensional case , 1997 .

[27]  H. Hanselka,et al.  Numerical and experimental investigation of lamb wave interaction with discontinuities , 2003 .

[28]  Sathya Hanagud,et al.  Scanning laser Doppler techniques for vibration testing , 2008 .

[29]  I. Johnstone,et al.  Ideal denoising in an orthonormal basis chosen from a library of bases , 1994 .

[30]  J. Monchalin.  Optical Detection of Ultrasound , 1986, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[31]  S. Beard,et al.  Active Damage Detection in Filament Wound Composite Tubes Using Built-In Sensors and Actuators , 1997 .

[32]  P. Cawley,et al.  The interaction of Lamb waves with defects , 1992, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[33]  D. Hutchins,et al.  Air-coupled piezoelectric detection of laser-generated ultrasound , 1994 .

[34]  Ningqun Guo,et al.  Lamb wave reflection for the quick nondestructive evaluation of large composite laminates , 1994 .

[35]  B. Culshaw,et al.  Laser generation of ultrasound using a modulated continuous wave laser diode , 1998 .

[36]  O. Nishizawa,et al.  Detection of shear wave in ultrasonic range by using a laser Doppler vibrometer , 1998 .

[37]  Bc Lee,et al.  Damage detection in metallic structures using Laser Acousto-Ultrasonics , 2003 .

[38]  Bc Lee,et al.  Modelling of Lamb waves for damage detection in metallic structures: Part I. Wave propagation , 2003 .

[39]  Wieslaw J. Staszewski,et al.  Structural Health Monitoring Using Guided Ultrasonic Waves , 2004 .

[40]  Szu-Sheng L. Wen,et al.  Temperature measurement of polymer extrusion by ultrasonic techniques , 1999 .

[41]  Richard J. Dewhurst,et al.  Estimation of the thickness of thin metal sheet using laser generated ultrasound , 1987 .

[42]  Fabrizio Scarpa,et al.  Structural health monitoring using scanning laser vibrometry: III. Lamb waves for fatigue crack detection , 2004 .

[43]  B. Culshaw,et al.  Broadband Lamb wave measurements in aluminium and carbon/glass fibre reinforced composite materials using non-contacting laser generation and detection , 1997 .