Multi-frequency local wavenumber analysis and ply correlation of delamination damage.

Wavenumber domain analysis through use of scanning laser Doppler vibrometry has been shown to be effective for non-contact inspection of damage in composites. Qualitative and semi-quantitative local wavenumber analysis of realistic delamination damage and quantitative analysis of idealized damage scenarios (Teflon inserts) have been performed previously in the literature. This paper presents a new methodology based on multi-frequency local wavenumber analysis for quantitative assessment of multi-ply delamination damage in carbon fiber reinforced polymer (CFRP) composite specimens. The methodology is presented and applied to a real world damage scenario (impact damage in an aerospace CFRP composite). The methodology yields delamination size and also correlates local wavenumber results from multiple excitation frequencies to theoretical dispersion curves in order to robustly determine the delamination ply depth. Results from the wavenumber based technique are validated against a traditional nondestructive evaluation method.

[1]  Cara A. C. Leckey,et al.  Guided waves in anisotropic and quasi-isotropic aerospace composites: three-dimensional simulation and experiment. , 2014, Ultrasonics.

[2]  M. Richardson,et al.  Review of low-velocity impact properties of composite materials , 1996 .

[3]  Hoon Sohn,et al.  Delamination detection in composites through guided wave field image processing , 2011 .

[4]  Suneet Tuli,et al.  A comparison of the pulsed, lock-in and frequency modulated thermography nondestructive evaluation techniques , 2011 .

[5]  Jung-Ryul Lee,et al.  Structural imaging through local wavenumber estimation of guided waves , 2013 .

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

[7]  Bing Li,et al.  Damage localization in composite laminates based on a quantitative expression of anisotropic wavefront , 2013 .

[8]  P. H. Johnston,et al.  Ultrasonic monitoring of ply crack and delamination formation in composite tube under torsion load , 2010, 2010 IEEE International Ultrasonics Symposium.

[9]  Cara A. C. Leckey,et al.  Study on crack scattering in aluminum plates with Lamb wave frequency–wavenumber analysis , 2013 .

[10]  V. V. Bolotin.  Delaminations in composite structures: Its origin, buckling, growth and stability , 1996 .

[11]  Massimo Ruzzene,et al.  Frequency–wavenumber domain filtering for improved damage visualization , 2007 .

[12]  Massimo Ruzzene,et al.  Frequency-wavenumber domain analysis of guided wavefields. , 2011, Ultrasonics.

[13]  Vladimir Markov,et al.  Design and applications of a high-speed Doppler imaging vibrometer , 2010, Optical Engineering + Applications.

[14]  G. Clark,et al.  Modelling of impact damage in composite laminates , 1989 .

[15]  Massimo Ruzzene,et al.  Instantaneous and local wavenumber estimations for damage quantification in composites , 2015 .

[16]  Eric I. Madaras,et al.  Combing Fracture Mechanics and Ultrasonic NDE to Predict the Strength Remaining in Thick Composites Subjected to Low-Level Impact , 1986, IEEE 1986 Ultrasonics Symposium.

[17]  Cara A. C. Leckey,et al.  Guided wave energy trapping to detect hidden multilayer delamination damage , 2015 .

[18]  Cara A. C. Leckey,et al.  Characterization of impact damage in composite laminates using guided wavefield imaging and local wavenumber domain analysis. , 2013, Ultrasonics.

[19]  Ian P Bond,et al.  A self-healing carbon fibre reinforced polymer for aerospace applications , 2007 .

[20]  É. Martin,et al.  Damage assessment of thin SiC/SiC composite plates subjected to quasi-static indentation loading , 2010 .

[21]  Eric R. Burke,et al.  Thermography inspection for early detection of composite damage in structures during fatigue loading , 2012, Defense, Security, and Sensing.

[22]  W. Staszewski,et al.  Fatigue crack detection in metallic structures with Lamb waves and 3D laser vibrometry , 2007 .

[23]  Sang Jun Lee,et al.  Chirp excitation of ultrasonic guided waves. , 2013, Ultrasonics.

[24]  Massimo Ruzzene,et al.  Approaches to hybrid SHM and NDE of composite aerospace structures , 2014, Smart Structures.

[25]  Cara A. C. Leckey,et al.  Multiple-mode Lamb wave scattering simulations using 3D elastodynamic finite integration technique. , 2012, Ultrasonics.

[26]  Cara A. C. Leckey,et al.  Delamination detection and quantification on laminated composite structures with Lamb waves and wavenumber analysis , 2015 .