Noncontact monitoring of immersed plates by means of laser-induced ultrasounds

This article presents the results of an experimental and numerical study where guided ultrasonic waves were used for the structural health monitoring/nondestructive evaluation of an immersed aluminum plate. Leaky Lamb waves were generated by means of a pulsed laser and detected by an array of immersion transducers. The signals were then processed using continuous wavelet transform to extract few damage-sensitive features that were fed to an unsupervised learning algorithm based on outlier analysis. The experimental setup was simulated numerically using a commercial finite element software to predict the time of arrival of the propagating modes. In order to assess the capability of the monitoring system to detect damage, four defects were devised on the plate prior to the immersion in water. We found that the noncontact probing system and the signal processing enable the detection of cracks and holes.

[1]  L. Goldberg.  Diversity in underwater inspection , 1996 .

[2]  James N Caron,et al.  Generation of ultrasound in materials using continuous-wave lasers. , 2012, Optics letters.

[3]  Hoon Sohn,et al.  Laser based structural health monitoring for civil, mechanical, and aerospace systems , 2012, Smart Structures.

[4]  B. Pavlakovic,et al.  Leaky guided ultrasonic waves in NDT. , 1998 .

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

[6]  Aditi Chattopadhyay,et al.  Simulation of Damage-features in a Lug Joint using Guided Waves , 2009 .

[7]  Peter Cawley,et al.  The excitation of Lamb waves in pipes using dry-coupled piezoelectric transducers , 1996 .

[8]  Mohamed A. El-Sharkawi,et al.  Elliptical novelty grouping for on-line short-turn detection of excited running rotors , 1999 .

[9]  Jem A. Rongong,et al.  Damage detection in an aluminium plate using outlier analysis , 2008 .

[10]  Hoon Sohn,et al.  An unsupervised learning algorithm for fatigue crack detection in waveguides , 2009 .

[11]  Laurence J. Jacobs,et al.  Modeling elastic wave propagation in waveguides with the finite element method , 1999 .

[12]  Israel Schechter,et al.  Underwater Interaction of 1064 nm Laser Radiation with Metal Target , 2009 .

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

[14]  Jean F. Bussière,et al.  Laser-Ultrasonics: From the Laboratory to the Shop Floor , 1998 .

[15]  B.T. Khuri-Yakub,et al.  Finite-element analysis of capacitive micromachined ultrasonic transducers , 2005, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[16]  J. A. Landt,et al.  LASER‐INDUCED HIGH‐PRESSURE SHOCK WAVES IN WATER , 1967 .

[17]  Tadeusz Uhl,et al.  Lamb wave propagation modelling and simulation using parallel processing architecture and graphical cards , 2012 .

[18]  Piervincenzo Rizzo,et al.  Semi-analytical formulation for the guided waves-based reconstruction of elastic moduli , 2011 .

[19]  Patrick Gaydecki,et al.  Flood member detection for real-time structural health monitoring of sub-sea structures of offshore steel oilrigs , 2007 .

[20]  Peter Cawley,et al.  A GENERAL PURPOSE COMPUTER MODEL FOR CALCULATING ELASTIC WAVEGUIDE PROPERTIES, WITH APPLICATION TO NON-DESTRUCTIVE TESTING , 2004 .

[21]  G. Hayward,et al.  An intelligent ultrasonic inspection system for flooded member detection in offshore structures , 1993, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[22]  David A. Hutchins,et al.  Quantitative measurements of laser‐generated acoustic waveforms , 1982 .

[23]  Keith Worden,et al.  Detection of defects in composite plates using Lamb waves and novelty detection , 2000, Int. J. Syst. Sci..

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

[25]  Guorong Cao,et al.  Laser-generated thermoelastic acoustic sources and Lamb waves in anisotropic plates , 2008 .

[26]  David A. Hutchins,et al.  Quantitative studies of thermally generated elastic waves in laser‐irradiated metals , 1980 .

[27]  Hoon Sohn,et al.  Baseline-free pipeline monitoring using optical fiber–guided laser ultrasonics , 2012 .

[28]  P. Rizzo,et al.  Wave propagation in multi-wire strands by wavelet-based laser ultrasound , 2004 .

[29]  D. Hammer,et al.  Laser-induced breakdown in aqueous media , 1997 .

[30]  J. Monchalin,et al.  Precision laser-ultrasonic velocity measurement and elastic constant determination , 1989 .

[31]  Adam Friedman,et al.  Lamb wave detection of limpet mines on ship hulls. , 2009, Ultrasonics.

[32]  Frenz,et al.  Laser-generated cavitation in absorbing liquid induced by acoustic diffraction. , 1996, Physical review letters.

[33]  Piervincenzo Rizzo,et al.  NDE/SHM of Underwater Structures: A Review , 2012 .

[34]  A. Vogel,et al.  Laser-induced plasma formation in water at nanosecond to femtosecond time scales: Calculation of thresholds, absorption coefficients, and energy density , 1999 .

[35]  R. Fabbro,et al.  Wavelength dependent of laser shock-wave generation in the water-confinement regime , 1999 .

[36]  Charles R. Farrar,et al.  Novelty detection in a changing environment: Regression and interpolation approaches , 2002 .

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

[38]  Tribikram Kundu,et al.  Ultrasonic field modeling in plates immersed in fluid , 2007 .

[39]  Richard F. Haglund,et al.  Laser ablation and desorption , 1998 .

[40]  D. C. Emmony.  Interaction of IR laser radiation with liquids , 1985 .

[41]  Alfred W. Cooper,et al.  Correlation of stress‐wave profiles and the dynamics of the plasma produced by laser irradiation of plane solid targets , 1975 .

[42]  Hoon Sohn,et al.  Structural damage classification using extreme value statistics , 2005 .

[43]  M. Lowe,et al.  DISPERSE: A GENERAL PURPOSE PROGRAM FOR CREATING DISPERSION CURVES , 1997 .

[44]  Francesco Lanza di Scalea,et al.  Wavelet-based outlier analysis for guided wave structural monitoring: Application to multi-wire strands , 2007 .

[45]  Dominique Placko,et al.  Modeling of the Ultrasonic Field of Two Transducers Immersed in a Homogenous Fluid Using the Distributed Point Source Method , 2010 .

[46]  Jan Drewes Achenbach,et al.  Quantitative nondestructive evaluation , 2000 .

[47]  Y. Lei,et al.  Application of time series analysis in structural damage evaluation , 2003 .

[48]  Nathan M. Newmark,et al.  A Method of Computation for Structural Dynamics , 1959 .

[49]  Keith Worden,et al.  DAMAGE DETECTION USING OUTLIER ANALYSIS , 2000 .

[50]  Hoon Sohn,et al.  Parameter estimation of the generalized extreme value distribution for structural health monitoring , 2006 .

[51]  Tribikram Kundu,et al.  Scattering of ultrasonic waves by internal anomalies in plates immersed in a fluid , 2006, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[52]  J Qu,et al.  Crack characterization using guided circumferential waves. , 2001, The Journal of the Acoustical Society of America.

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

[54]  Tribikram Kundu,et al.  Ultrasonic Nondestructive Evaluation : Engineering and Biological Material Characterization , 2003 .

[55]  Medizinisches Laserzentrum Lu ̈ beck,et al.  Shock wave emission and cavitation bubble generation by picosecond and nanosecond optical breakdown in water , 1996 .

[56]  B. Dutton,et al.  Laser generation of lamb waves for defect detection: Experimental methods and finite element modeling , 2012, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[57]  L. Drain,et al.  Laser Ultrasonics Techniques and Applications , 1990 .

[58]  Li Cheng,et al.  Identification of corrosion damage in submerged structures using fundamental anti-symmetric Lamb waves , 2009 .

[59]  Bc Lee,et al.  Lamb wave propagation modelling for damage detection: II. Damage monitoring strategy , 2007 .

[60]  R. Fabbro,et al.  SHOCK WAVES FROM A WATER-CONFINED LASER-GENERATED PLASMA , 1997 .

[61]  SeJin Han,et al.  Finite-Element Analysis of Lamb Wave Propagation in a Thin Aluminum Plate , 2009 .

[62]  P. Cawley,et al.  A two-dimensional Fourier transform method for the measurement of propagating multimode signals , 1991 .

[63]  Israel Schechter,et al.  Micro-dynamics of optical breakdown in water induced by nanosecond laser pulses of 1064 nm wavelength , 2009 .

[64]  Francesco Lanza di Scalea,et al.  Propagation of ultrasonic guided waves in lap-shear adhesive joints , 2004, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

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

[66]  Tribikram Kundu,et al.  Wave Propagation in a Fluid Wedge over a Solid Half-Space-Mesh-Free Analysis with Experimental Verification , 2009 .

[67]  Bc Lee,et al.  Lamb wave propagation modelling for damage detection: I. Two-dimensional analysis , 2007 .

[68]  Shi-Chang Wooh,et al.  Behavior of laser-induced ultrasonic waves radiated from a wet surface. Part I. Theory , 2001 .

[69]  Peter Cawley,et al.  Material property measurement using the quasi-Scholte mode—A waveguide sensor , 2005 .

[70]  Ivan Bartoli,et al.  A semi-analytical finite element formulation for modeling stress wave propagation in axisymmetric damped waveguides , 2008 .

[71]  Cac Minh Dao,et al.  Ultrasonic field modeling: a comparison of analytical, semi-analytical, and numerical techniques , 2010, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[72]  B. Sullivan,et al.  Profile of laser‐produced acoustic pulse in a liquid , 1983 .

[73]  K. Law,et al.  Time series-based damage detection and localization algorithm with application to the ASCE benchmark structure , 2006 .

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

[75]  J. Moll,et al.  Guided waves for autonomous online identification of structural defects under ambient temperature variations , 2012 .

[76]  Ivan Bartoli,et al.  Modeling guided wave propagation with application to the long-range defect detection in railroad tracks , 2005 .

[77]  Tribikram Kundu,et al.  Underwater Pipeline Inspection Using Guided Waves , 2001, NDE Challenges of the 21st Century: Theory to Practice.