Application of laser Doppler vibrometry for ultrasonic velocity assessment in a composite panel with defect

Abstract The measurement and analysis of the velocity and other properties of guided waves are commonly carried out using a variety of techniques. Depending on devices employed in the experiments, the instrumentation limitations must be taken into account in order to ensure the accuracy of the measurements. In this paper, the characteristics of guided waves propagating in a quasi-isotropic composite with an embedded Teflon film, that can simulate the presence of a delamination, are studied. The guided waves are created by means of a piezoelectric transducer bonded to the surface of the laminate and the signals are acquired by a high precision laser Doppler vibrometer. A signal analysis methodology is adopted to estimate the group velocity of the propagating wave packet, first in the undamaged region of laminate and then in the region containing the simulated delamination. The measurement error is discussed and appropriate formulas are presented for uncertainty quantification in the velocity calculation.

[1]  Fabrizio Scarpa,et al.  Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing , 2004 .

[2]  David J. Ewins,et al.  Modal Testing: Theory, Practice, And Application , 2000 .

[3]  N. D. Boffa,et al.  Guided waves in a stiffened composite laminate with a delamination , 2016 .

[4]  Steve Vanlanduit,et al.  On the use of a laser Doppler vibrometer for quality control of picture tubes , 2004, International Conference on Vibration Measurements by Laser Techniques: Advances and Applications.

[5]  K. Graff.  Wave Motion in Elastic Solids , 1975 .

[6]  Lin Ye,et al.  Guided Lamb waves for identification of damage in composite structures: A review , 2006 .

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

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

[9]  Steve Vanlanduit,et al.  Absorption measurement of acoustic materials using a scanning laser Doppler vibrometer , 2005 .

[10]  Sathya Hanagud,et al.  Mode shape measurement using a scanning laser Doppler vibrometer , 1992 .

[11]  Joseph L. Rose,et al.  Ultrasonic Guided Waves in Solid Media , 2014 .

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

[13]  David J. Ewins,et al.  Modal Testing Using Impact Excitation and a Scanning LDV , 2000 .

[14]  L. Mazeika,et al.  Application of analytical and semi-analytic modelling methods for investigation of ultrasonic guided waves propagation in composites , 2011 .

[15]  V. Memmolo,et al.  Model assisted probability of detection for a guided waves based SHM technique , 2016, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[16]  Brian Culshaw,et al.  Non-contact measurement of the mechanical properties of materials using an all-optical technique , 2003 .

[17]  Anindya Ghoshal,et al.  Experimental Investigation of Damage Detection in Composite Material Structures Using a Laser Vibrometer and Piezoelectric Actuators , 2003 .

[18]  D. Worlton,et al.  ULTRASONIC TESTING WITH LAMB WAVES , 1956 .

[19]  Z. Su,et al.  Identification of Damage Using Lamb Waves , 2009 .

[20]  Giovanni Maria Carlomagno,et al.  Infrared thermography and ultrasonics to evaluate composite materials for aeronautical applications , 2015 .

[21]  Gian Marco Revel,et al.  Structural damage assessment in composite material using laser Doppler vibrometry , 2004, International Conference on Vibration Measurements by Laser Techniques: Advances and Applications.

[22]  Bin Zhao,et al.  Case Studies of LDV-Aided Dynamic Testing , 2012 .

[23]  Zhongwei Jiang,et al.  Damage localization in plate-like structure using built-in PZT sensor network , 2012 .

[24]  Kritsakorn Luangvilai,et al.  Attenuation of ultrasonic Lamb waves with applications to material characterization and condition monitoring , 2007 .

[25]  Sathya Hanagud,et al.  A SCANNING LASER DOPPLER VIBROMETER FOR MODAL TESTING , 1990 .

[26]  Hyunjo Jeong,et al.  Fracture source location in thin plates using the wavelet transform of dispersive waves. , 2000, IEEE transactions on ultrasonics, ferroelectrics, and frequency control.

[27]  Ajit K. Mal,et al.  Deformation of Elastic Solids , 1990 .

[28]  Paolo Castellini,et al.  Different configurations of laser vibrometry for quality control of electric motors with external rotor , 2012 .

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

[30]  N. D. Boffa,et al.  Ultrasonic and IR Thermographic Detection of a Defect in a Multilayered Composite Plate , 2016 .

[31]  C. H. Chen,et al.  Ultrasonic and advanced methods for nondestructive testing and material characterization , 2007 .

[32]  Adnan H. Nayfeh,et al.  Wave propagation in layered anisotropic media : with applications to composites , 1995 .

[33]  Jong-Hyun Lee,et al.  Fiber-Optic Laser Doppler Vibrometer to Dynamically Measure MEMS Actuator With In-Plane Motion , 2009, Journal of Microelectromechanical Systems.

[34]  Qing Zhang,et al.  A quantitative method for evaluating numerical simulation accuracy of time-transient Lamb wave propagation with its applications to selecting appropriate element size and time step. , 2016, Ultrasonics.

[35]  F. Yuan,et al.  Group velocity and characteristic wave curves of Lamb waves in composites: Modeling and experiments , 2007 .

[36]  Matthew S. Allen,et al.  Output-Only Modal Analysis Using Continuous-Scan Laser Doppler Vibrometry and Application to a 20kW Wind Turbine , 2012 .

[37]  Cedric Briens,et al.  Application of fiber optic reflection probes to the measurement of local particle velocity and concentration in gas—solid flow , 1994 .

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

[39]  D. Chimenti,et al.  Free Wave Propagation in Plates of General Anisotropic Media , 1989 .

[40]  B. A. Auld,et al.  Elastic waves in free anisotropic plates , 1973 .