Modelling and numerical simulations of vibrothermography for impact damage detection in composites structures

The paper investigates modelling aspects related to application of vibrothermography for detection of barely visible impact damage in composite structures. Low-velocity impact tests were performed to introduce multiple delaminations into carbon/epoxy composite plate. Damage severity was revealed using well-established non-destructive evaluation techniques. Vibrothermography was used subsequently to show good agreement with classical damage detection techniques. Following these experimental investigations, numerical simulations were performed to assess feasibility and sensitivity of vibrothermography for impact damage detection. Numerical results were validated using experimental data showing very good qualitative and encouraging quantitative agreement. The study demonstrates that virtual impact damage detection using vibrothermography can be performed as part of structural design to assess sensitivity of the method in real engineering applications. Copyright © 2012 John Wiley & Sons, Ltd.

[1]  G. Alfano.  On the influence of the shape of the interface law on the application of cohesive-zone models , 2006 .

[2]  Gerhard Busse,et al.  Ultrasound excited thermography using frequency modulated elastic waves , 2003 .

[3]  Daniel J. Inman,et al.  Damage Prognosis For Aerospace, Civil and Mechanical Systems Preface , 2005 .

[4]  Francesco Aymerich,et al.  Simulation of multiple delaminations in impacted cross-ply laminates using a finite element model based on cohesive interface elements , 2009 .

[5]  Francesco Aymerich,et al.  Prediction of impact-induced delamination in cross-ply composite laminates using cohesive interface elements , 2008 .

[6]  Stephen Pierce,et al.  Reliable thermosonic inspection of aero engine turbine blades , 2010 .

[7]  Golam Newaz,et al.  Response of sub-surface fatigue damage under sonic load – a computational study , 2004 .

[8]  Christian Boller,et al.  Health Monitoring of Aerospace Structures , 2003 .

[9]  Francesco Aymerich,et al.  Ultrasonic evaluation of matrix damage in impacted composite laminates , 2000 .

[10]  Golam Newaz,et al.  Finite element modeling of the heating of cracks during sonic infrared imaging , 2006 .

[11]  G. Newaz,et al.  Fatigue Damage Detection In Graphite/Epoxy Composites Using Sonic Infrared Imaging Technique , 2004 .

[12]  Lawrence D. Favro,et al.  Recent developments in thermosonic crack detection , 2002 .

[13]  Marc Thomas,et al.  Numerical modeling of vibrothermography based on plastic deformation , 2010 .

[14]  Md. Sarwar Islam,et al.  Finite-element modeling of acoustic chaos to sonic infrared imaging , 2005 .

[15]  T. Ummenhofer,et al.  Structural-thermal FE simulation of vibration and heat generation of cracked steel plates due to ultrasound excitation used for vibrothermography , 2010 .

[16]  Soo-Jin Park,et al.  Thermal conductivity and mechanical properties of various cross-section types carbon fiber-reinforced composites , 2002 .

[17]  A. Fahr,et al.  Frictional heating model for efficient use of vibrothermography , 2009 .

[18]  André Vantomme,et al.  Site location of Co in beta-FeSi2 , 2005 .

[19]  James R. Lhota,et al.  Experimental considerations in vibrothermography , 2004, SPIE Defense + Commercial Sensing.

[20]  J. D. Melo,et al.  Determination of the Elastic Constants of a Transversely Isotropic Lamina Using Laminate Coefficients of Thermal Expansion , 2002 .