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Evaluation of delamination in Carbon Fibre Composites Using the Eddy Current Method

Adriana Savin, R. Grimberg, S. Chifan,
National Institute of R&D for Technical Physics, 47 Mangeron Blvd, 6600, Iasi, ROMANIA
D. Premel, Y. Le Bihan,
LESIR, ENS Cachan, 61, Av. du Président Wilson 94235 Cachan Cedex, FRANCE
Contact

Introduction

Experimental set-up

Theoretical principle of the eddy current holography

Experimental results

Fig 4: Location of delamination into the depth of material Fig 5: Dependence between the impact energy and the area of delamination

Conclusions

Acknowledgement

Reference

  1. L.W.Schmerr, Fundamentals of Ultrasonic Nondestructive Evaluation, Plenum Press, New York,1998
  2. H.T. Chien, S.H.Sheen, A.C.Raptis, An Alternative Approach of Acousto-ultrasonic Technique for Monitoring Material Anisotropy of Fiber Reinforced Composites, IEEE Trans.Ultrason:Feroelect.Freq.Contr.,42, (1995), 525-543
  3. X.E.Gros, K.Ogi, K.Takahashi, Eddy Current, Ultrasonic C-scan and Scanning Acoustic Microscopy Testing of Delaminated Quasi-isotropic CFRP Materials: A Case Study, Journal of Reinforced Plastics and Composites, 17, 5, (1998), 389-405
  4. M.Lemistre, C.Gallaud, R.Gouyon, D.Balageas,, Une methode magnetique radiofrequence de localisation des defauts dans les structures en composite carbone, Congress Cofrend sur les essais non destructifs, Nantes, France(1997)
  5. R. Grimberg, A. Savin, E. Radu, O.Mihalache, Nondestructive Evaluation of the Severity of Discontinuities in Flat Conductive Materials using the Eddy Current Transducer with Orthogonal Coils, IEEE Trans on Mag. 36, 1, (2000), 299-231
  6. Nadia Madaoui, Adriana Savin, D. Prémel, O. Venard, R. Grimberg, An Approach for Quantitative Nondestructive Evaluation of the Discontinuities in Flat Conductive Materials Using Eddy Currents, 5th International Workshop on Electromagnetic Nondestructive Evaluation, Iowa USA, Aug.1999, 90.
  7. R.Grimberg, R.Plavanescu, A.Andreescu, Adriana Savin , Transducer for eddy current surface control,Romanian Patent no. 9960/1989 .

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