Evaluation of barely visible indentation damage (BVID) in CF/EP sandwich composites using guided wave signals

Abstract Barely visible indentation damage after quasi-static indentation in sandwich CF/EP composites was assessed using ultrasonic guided wave signals. Finite element analyses were conducted to investigate the interaction between guided waves and damage, further to assist in the selection process of the Lamb wave sensitive modes for debonding identification. Composite sandwich beams and panels structures were investigated. Using the beam structure, a damage index was defined based on the change in the peak magnitude of the captured wave signals before and after the indentation, and the damage index was correlated with the residual deformation (defined as the depth of the dent), that was further correlated with the amount of crushing within the core. Both A0 and S0 Lamb wave modes showed high sensitivity to the presence of barely visible indentation damage with residual deformation of 0.2 mm. Furthermore, barely visible indentation damage was assessed in composite sandwich panels after indenting to 3 and 5 mm, and the damage index was defined, based on (a) the peak magnitude of the wave signals before and after indentation or (b) the mismatch between the original and reconstructed wave signals based on a time-reversal algorithm, and was subsequently applied to locate the position of indentation.

[1]  H. Sohn,et al.  Understanding a time reversal process in Lamb wave propagation , 2009 .

[2]  Dong Wang,et al.  A Probabilistic Diagnostic Algorithm for Identification of Multiple Notches Using Digital Damage Fingerprints (DDFs) , 2009 .

[3]  Samir Mustapha,et al.  Assessment of debonding in sandwich CF/EP composite beams using A0 Lamb wave at low frequency , 2011 .

[4]  L. Ye,et al.  Damage Identification and Assessment in Tapered Sandwich Structures Using Guided Waves , 2013 .

[5]  Samir Mustapha,et al.  Debonding Detection in Composite Sandwich Structures Based on Guided Waves , 2012 .

[6]  Constantinos Soutis,et al.  Damage detection in composite materials using lamb wave methods , 2002 .

[7]  Hoon Sohn,et al.  Application of a Time Reversal Process to Baseline-free Structural Monitoring , 2005 .

[8]  Victor Giurgiutiu,et al.  Single Mode Tuning Effects on Lamb Wave Time Reversal with Piezoelectric Wafer Active Sensors for Structural Health Monitoring , 2007 .

[9]  Lin Ye,et al.  Lamb wave-based quantitative identification of delamination in CF/EP composite structures using artificial neural algorithm , 2004 .

[10]  Daniel J. Inman,et al.  Reference-free damage detection using instantaneous baseline measurements , 2009 .

[11]  S. Abrate.  Impact on Laminated Composite Materials , 1991 .

[12]  Boško Rašuo,et al.  Review of impact damages modelling in laminated composite aircraft structures , 2013 .

[13]  Samir Mustapha,et al.  Leaky and non-leaky behaviours of guided waves in CF/EP sandwich structures , 2014 .

[14]  Michele Meo,et al.  The response of honeycomb sandwich panels under low-velocity impact loading , 2005 .

[15]  L. Edwards,et al.  Residual stresses in structures reinforced with adhesively bonded straps designed to retard fatigue crack growth , 2008 .

[16]  R. Růžek,et al.  Ultrasonic C-Scan and shearography NDI techniques evaluation of impact defects identification , 2006 .

[17]  Nobuo Takeda,et al.  Barely visible impact damage detection for composite sandwich structures by optical-fiber-based distributed strain measurement , 2009 .

[18]  Darryl P Almond,et al.  Detecting Low Velocity Impact Damage in Composite Plate Using Nonlinear Acoustic/Ultrasound Methods , 2010 .

[19]  Michelle S. Hoo Fatt,et al.  Dynamic models for low-velocity impact damage of composite sandwich panels – Part A: Deformation , 2001 .

[20]  Victor Giurgiutiu,et al.  Structural Health Monitoring with Piezoelectric Wafer Active Sensors for Space Applications , 2007 .

[21]  W. Staszewski,et al.  Health monitoring of aerospace composite structures – Active and passive approach , 2009 .

[22]  Samir Mustapha,et al.  Propagation behaviour of guided waves in tapered sandwich structures and debonding identification using time reversal , 2015 .

[23]  Chun H. Wang,et al.  A synthetic time-reversal imaging method for structural health monitoring , 2004 .

[24]  D R Ambur,et al.  Compression Response of a Sandwich Fuselage Keel Panel With and Without Damage , 1997 .

[25]  F. Yuan,et al.  Diagnostic Lamb waves in an integrated piezoelectric sensor/actuator plate: analytical and experimental studies , 2001 .

[26]  M. Fink,et al.  Time-reversed Lamb waves , 1998, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[27]  U. Polimeno,et al.  Detecting barely visible impact damage detection on aircraft composites structures , 2009 .

[28]  Dong Wang,et al.  Probabilistic damage identification based on correlation analysis using guided wave signals in aluminum plates , 2010 .

[29]  B. Gangadhara Prusty,et al.  Prediction of flange debonding in composite stiffened panels using an analytical crack tip element-based methodology , 2008 .

[30]  Nobuo Takeda,et al.  Structural health monitoring of composite wing structure during durability test , 2007 .

[31]  C. Valle,et al.  Flaw localization using the reassigned spectrogram on laser-generated and detected Lamb modes. , 2002, Ultrasonics.